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1. P I or E M Answer Reviewer Comment on Answer See answer to RI D RO8 Q PA Reviewer Position wrt Answer Closed or OPEN Board Comment Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN RIRvirtis TNote 1 answer doc f gt VEX ASTR T TCN 0275 1 L y 27 11 02 lenus express 30 2 3 PRODUCT ASSURANCE RIRvirtis TNote 1 answer doc I Ref VEX ASTR T TCN 0275 Issue 1 Date 27 11 02 Page 31 R I R REVIEW ITEM DISCREPANCY Title of Document CR RFW NCR lists and compliance matrix Reference of Document Section and Page of Document Synthesis of the Comment CR RFW AND NCR APPLICABLE TO VEX SHALL ONLY BE PROVIDED Reviewer Comment or Question All the ROSETTA Request Conformance Reports are provided For Waivers and Non We propose the following logic to assess them properly in the frame of VEX program l As a first step each VIRTIS compliance status to the MEX PID A requirements VEX applicable document shall explicitely refer to the ones of the ROSETTA RFW s and NCR s which are relevant to the analysed requirement These REW s an NCR s will then be analysed by Astrium in the frame of the PID A requirements 2 As a second step after identification of the ROSETTA models to be used on VEX relevant NCR s issued in the frame of these specific models manufacturing to be assessed by Astrium in the frame
2. Instrument Experiment VIRTIS Importance MAJOR RID Identification Reviewer ID EB 7 Domain ID DEV Reviewer Recommendation Please would you provide the required DDVP document by including the relevant test matrix with regards to the different modules of VIRTIS models by models Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN f Ref VEX ASTR T TCN 0275 Issue 1 y Date 271102 enus express Page 24 R I R REVIEW ITEM DISCREPANCY Title of Document System Ground I F and activities Instrument Experiment requirements VIRTIS Reference of Document RO EST RS 3001 EID B Vol 5 Section and Page of Document Importance General MAJOR Synthesis of the Comment RID Identification Reviewer ID EB 8 ELECTRICAL INTERFACES WITH SATELLITE VEX Domain ID DEV TEST BENCH TO BE VERIFIED n Reviewer Comment or Question Reviewer Recommendation The status of representativity of the EM model dedicated to VEX Please provide the status of shall be provided in terms of data packaging frequency and representativity of the VIRTIS EM response time telemetry Model P I or E M Answer Reviewer Comment on Answer The EM model foreseen for VEX is the EQM model used for ROSETTA At the moment this model is still used by ESA in the fram
3. Interaction analysis The FMECA document last update is dated October 2000 Afterwards it was decided not to complete the chapter 9 since ASI and ESA accepted the document as it was Chapter 9 should be considered deleted in the next issue Appendix A Main electronics FMECA The said items causes a reverse powering of the un powered S C power line in case of failure This might be a safety aspect and has to be assessed by the S C respectively But this is valid only for VI R DER AN 003 1 17 and 1 18 but not for 1 4 2 and 14 7 For 14 2 and 14 7 there is a mistake in the analysis and are not Safety aspects for S C 1 4 2 and 14 7 are valid only in case of double failure if e g relay contact 1 4 2 short circuit RIRvirtis TNote 1 answer doc Instrument Experiment VIRTIS Importance MAJOR RID Identification Reviewer ID RO 8 Domain ID QPA Reviewer Recommendation Please update the paragraph 9 of FMECA document with regards to VEX requirements Please confirm that the remarks Safety aspect for S C will be mentioned in the VEX User Manual Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN f gt VEX ASTR T TCN 0275 1 L y 2741 02 enus express 45 failure 1 and 1 4 4 short circuit failure 2 fail VI R DLR AN 003 to be updated Note in any case Safety aspect for S C will be mentioned inthe VVX ME User Manual Board Comment Board Recommendat
4. Synthesis of the Comment UPDATED SCHEDULE FULLY COMPATIBLE OF PARTNERSHIP AGREEMENT REQUIREMENT TO BE PROVIDED Reviewer Comment or Question Agreed delivery dates are recalled and underlined to be compared to the dates provided in the schedule of the management plan which are not underlined Structural dummies 15 11 2002 from ROSETTA gt 31 01 2003 EM 1 06 2003 gt 30 06 2003 FM 2 01 2004 available from ROSETTA to include 3 months contingency gt 26 05 2004 FS with FM definition TBD None Moreover schedule provided at kick off is as follows V M V H amp ME ass amp test calibration spare parts available 30 06 2003 PFM availability after calibration 30 01 2004 P I or E M Answer VI RTIS delivery dates are compatible with the schedule which we provided in the RIR data package and they are not much pessimistic The schedule provided at the KOM was not updated since J une 2002 as you can see in such graph looking at the KOM date foreseen 01 07 2002 Despite the industrial activity of VENUS EXPRESS started in J uly 2002 after the SPC we could not start full activity and procurement until the LOL from ASTRIUM in November Structural dummies delivery is still TBC and should be finalized at the RIR We are confident that we can make an effort to match the EM delivery as agreed in the partnership agreement but certainly an anticipated delivery of the FM will push all the activity in criticality
5. 271102 Jenus express Page 35 R I R REVIEW ITEM DISCREPANCY Title of Document VIRTIS Data pack Instrument Experiment Reference of Document V V X GAF DP 001 VIRTIS Section and Page of Document Importance Minor Synthesis of the Comment RID Identification Reviewer ID RO 1 VIRTIS VEX documents numbering to be improved l Domain ID QPA Reviewer Comment or Question Reviewer Recommendation Documentation numbering is not harmonized with clear link to Please propose a way of VENUS EXPRESS VEX improvement to better proceed in the future P I or E M Answer Reviewer Comment on Answer The RI R Data Package was raised in a very short time making use of several documents of Rosetta Program and some non configured documents It has implied the not very well harmonized document identif ication Reviewer Position wrt Answer It s foreseen to issue a CADM Plan dedicated to VI RTIS for Closed or OPEN Venus Express Base of this plan will be the document codification reported in annex 1 Board Comment Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN RIRvirtis TNote 1 answer doc Ref gt VEX ASTR T TCN 0275 ANNEX 1 TO RIR RO 01 QPA Issue d Date 27 11 02 Page 36 e TAS Orsay France ORS DD Document Type Code shall be indicated as in Table 1 preliminary list NNN Sequential number composed by three digits starti
6. SPICAV PFS and with those on other mounting surfaces ASPERA VERA VENSIS P I or E M Answer This matter should be discussed in the framework of a common observation strategy among the different instruments Nevertheless we can anticipate that 7 of co alignment accuracy wrt PFS and SPI CAV can be considered a baseline while the same number is definitely not necessary wrt ASPERA VERA and VENSIS RIRvirtis TNote 1 answer doc Instrument Experiment VIRTIS Importance MAJOR RID Identification ESOCOA Reviewer ID RT Domain ID SYS Reviewer Recommendation Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN Board Comment RIRvirtis TNote 1 answer doc f gt VEX ASTR T TCN 0275 1 L y 2741 02 enus express 56 Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN I Ref gt VEX ASTR T TCN 0275 Issue Date 27 11 02 Page 57 R I R REVIEW ITEM DISCREPANCY Title of Document CIL Reference of Document RO VIR UM 001 iss 2 Section and Page of Document Page 82 Synthesis of the Comment NEED FOR ALIGNMENTS ON GROUND OR IN FLIGHT TO BE DETAILED FOR VENUS EXPRESS Reviewer Comment or Question What are the needs for alignments on ground Q Mechanical or optical alignment Q With respect to S C reference or another instrument a What is the required accuracy
7. VIRTIS VEX DP Hereafter is the list of items provided We sent them today by TNT express thus you should get it on Monday Tuesday a NHIONH ERU NE ZROCN E NS RERO ER CER ZH DEN DR CONS E DRE EH DEM EROR ERCONS E E REO NH ERU AU e DER EM DEG GR SER EH DER ZR CFR ER DES HRS OR EROS GRON NES HOUR RA RH DEM EM DER HH DU E DU RC EC RN RO UR HC Maurizio Giustini RIRvirtis TNote 1 answer doc best Regards ee Giuseppe Piccion CNR IAS via del Fosso del Cavaliere 100 00133 Roma Phone 39 0649994445 4547 Fax 39 06206601858 E Mail piccionigerm iasf cnr it NEW NEW II hdd d dd y Rhhhgess PEE NE Rhhhhlhbkk o Section 22 Monge o Section z Mong RIRvirtis TNote 1 answer doc I Ref VEX ASTR T TCN 0275 Issue 1 Date 27 11 02 Page 43 R I R REVIEW ITEM DISCREPANCY Title of Document QSL Reference of Document VIR DES PL 1430 VIR KAY LI 025 Section and Page of Document Synthesis of the Comment QSL S SUITABILITY STATUS FOR VEX TO BE CONFIRMED Reviewer Comment or Question These are ROSETTA QSL s Where is the analysis allowing to confirm the suitability of these QSL s for VEX P I or E M Answer The QSL must be read in conjunction with the Tech Note VVX GAF TN O02 VIRTIS Qualification Status VEX Mechanical amp Thermal Requirements More details about ME e Vibration Environment w r t refer to VVX KAY TN 001 Rf W 100 Operation is not possible
8. What is the need for in flight alignments calibration Basic principle used measurements on stars Need for comparison with other instruments spacecraft reference kind measurements number of measurements timing Description of foreseen operations RIRvirtis TNote 1 answer doc Instrument Experiment VIRTIS Importance MAJOR RID Identification Reviewer ID PR 02 Domain ID SYS Reviewer Recommendation define the need for alignment and calibrations on ground and in flight Please I pem ress P I or E M Answer The needs for alignment and co alignment on ground and in flight are described in 2 2 6 3 and 2 2 6 4 of VI RTIS EI D B Nevertheless any reference to the ROSETTA camera can be replaced with the optical reference cube The in flight check of alignment is performed looking to the stars For co alignment wrt different instruments refer to RID ESOCO4 Board Comment RIRvirtis TNote 1 answer doc Ref gt VEX ASTR T TCN 0275 Issue Date 27 11 02 Page 58 Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN f Ref gt VEX ASTR T TCN 0275 Issue 1 Date 27 11 02 Page 59 2 5 SCIENCE PERFORMANCES NO RID S AVAILABLE RIRvirtis TNote 1 answer doc Ref VEX ASTR T TCN 0275 Issue 1
9. then be analysed by Astrium in the frame of the PID A requirements 2 Would you provide in a specific file the Rosetta NCR s and RFW s which are not relevant to the PID A neither to the Rosetta H W for VEX with a statement of relevance for VEX Note 4 this file will then be assessed with Astrium through a specific review f gt VEX ASTR T TCN 0275 1 L 4 27 11 02 enus express 28 Note 2 indeed even if ROSETTA RFWs and NCRs are not relevant to MEX PID A neither to he Rosetta H W to be used on VEX they have to be carefully analysed P I or E M Answer Reviewer Comment on Answer See MG 03 answer to previous EB 9 QPA RID Reviewer Position wrt Answer Closed or OPEN Board Comment Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN RIRvirtis TNote 1 answer doc Ref VEX ASTR T TCN 0275 Issue 1 y Date 27 11 02 enUS exoress Page 29 R LR REVIEW ITEM DISCREPANCY Title of Document FMECA Instrument Experiment Reference of Document VIR GAL TN 070 i1ss 2 VIRTIS Section and Page of Document Importance Page 50 9 Minor if editorial Synthesis of the Comment RID Identification Reviewer ID CSJ 02 Work to be completed Domain ID DEV Reviewer Comment or Question Reviewer Recommendation This chapter will be prepared This open work has never Please would you complete it been completed
10. y Date 27 11 02 GNUS cxoress Page 60 2 6 MECHANICAL AND THERMAL RIRvirtis TNote 1 answer doc Ref gt VEX ASTR T TCN 0275 Issue Date 27 11 02 Page 6l R LR REVIEW ITEM DISCREPANCY Title of Document VIRTIS QSL Reference of Document VIR GAL LI 083 Section and Page of Document Synthesis of the Comment LIFETESTING FOR MECHANISMS Reviewer Comment or Question Lifetesting for mechanisms is not addressed in the QSL it is considered an element of mechanism qualification P I or E M Answer The assessment for the need of additional lif etesting of the mechanisms will be done after a more detailed clarification of the VIRTIS operational requirements on VEX However the baseline f or VI RTI S VEX operations will be such as to use the mechanisms within their already test proved lif etime Board Comment RIRvirtis TNote 1 answer doc Instrument Experiment VIRTIS Importance MAJOR RID Identification Reviewer ID HE 1 Domain ID MTH Reviewer Recommendation Compare the operational requirements for the mechanisms between ROSETTA and VEX and assess whether there is a need for additional testing for VEX Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN f gt VEX ASTR T TCN 0275 1 L y 27 11 02 6NUS expre
11. ASTR T TCN 0275 Issue 1 y Date 271102 enus express Page 18 RIRvirtis TNote 1 answer doc f Ref VEX ASTR T TCN 0275 Issue 1 Date 27 11 02 Page 19 RIR REVIEW ITEM DISCREPANCY Title of Document CIL Instrument Experiment Reference of Document RO VIR UM 001 iss 2 VIRTIS Section and Page of Document Importance Page 86 to 92 MAJOR Synthesis of the Comment RID Identification Reviewer ID PR 01 A DESCRIPTION OF VENUS EXPRESS OPERATIONS IS MISSING Reviewer Comment or Question Reviewer Recommendation The User Manual is a Rosetta document Could you describe the Domain ID MGT 9 operations foreseen for Venus Express Please provide a VEx document What are for instance the operational constraints for the planet mosaic mode Describe the operations in terms of Number of images 86s time sequence with constraints and Duration for each image acquisition not only in terms of number of Timing constraints between images acceptability of a DIUI a varying distance if the observation is performed between apocentre and pericentre Pointing performance or pointing stability constraints if any RIRvirtis TNote 1 answer doc I pm express P I or E M Answer The VIRTIS VEX scientific observation scenario must be defined in the EI D B doc As a baseline we provide in attach here a PDF doc already discussed at the various Venus SWT for the entire payloa
12. OF CONTENTS PEE UP DPE ener ee aaa aa eT 6 2 VIRTIS RLR RLD isis it it iki ea i ii ik wii ie ani mld 7 A OS DFS 0 fl a Rp E I EE eod DM ETE MM CM MEM CDU MM MM M i LM ee nen dM 8 DOCLMENTATIUON FOR RIR DATA ia ae cele ee 9 UPDATED SCHEDULE FULLY COMPATIBLE OF PARTNERSHIP AGREEMENT REQUIREMENT TO BE PROVIDED A DESCRIPTION OF VENUS EXPRESS OPERATIONS IS MISSING ccsssccsssscssseressscessssessserensscessssesssesssssessstesssesens 9 ZAIDBVELLIPMENT AIC AND TEN TE uadit iacta istis AS M MEM stra Maus AU AM Mc eee rere 21 COMPATIBILITY OF DETECTORS TO VEX RADIATION ENVIRONMENT TO BE CONFIRMED eene 38 NE TES CONFIGURATION STATUS LIST TO BE PROVIDEDL iinicixichesneoesttid uc aiaa mdi edu een cia 40 SL S SUITABILITY ST ATUS FOR VEX TO BE CONFIRMED ccesssccssscccsessesseesseeessserscssssnsesesssessassssssesssssensessseses 43 EMECA TO BE UPDATED AND USER MANUAL TO REFLECT THE IDENTIFIED CONSTRAINTS 44 A E E renee eee eT eee een eve eee AM MEM renee eee eee cree ree eet ere SM 48 ASTRIUM ANSWERS TO QUESTIONS MENTIONED PII IFOD 010 FOLLOW BING enn ee 65 RIRvirtis TNote 1 answer doc VEX T ASTR TCN 0275 wl 1 L p 29 11 02 Jenus express edv LS UPERSIEODLAND SUPR ABB ono acc M CEDE tup MEM MA OU DM EM EE 74 FULL INSTRUMENT OPERATION CANNOT BE GUARANTEED BELOW 4AU ssseen nen 75 NO VENUS EXPRESS SPECIFIC INFO IS PRO
13. The VEX AIT User Manual The VEX TM TC data base I or E M Answer compliance matrix to MEX PI D A merge with RI D EB9 Q PA DDVP relating to VEX merge with RI D EB6 DEV ROSETTA mathematical models updated with regards to VEX interfaces merge with RI D EB6 DEV VEX Flight User Manual to be provided as soon as VEX mission Flight Ops will be clearly identified VEX AIT User Manual will be provided as soon as VEX mission on ground Ops will be clearly identified VEX TM TC data base see above points 4 and 5 Board Comment RIRvirtis TNote 1 answer doc Instrument Experiment VIRTIS Importance MAJOR RID Identification Reviewer ID EB 1 Domain ID MGT Reviewer Recommendation The compliance matrix DDVP and mathematical models available today are the ROSETTA ones Please would you provide them with regards to VEX program Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN Board Recommendation No action or ACTION RIRvirtis TNote 1 answer doc Ref VEX ASTR T TCN 0275 Issue 1 y Date 271102 enus express Page 10 Board Position wrt RID Closure Closed or OPEN I pm express Ref VEX ASTR T TCN 0275 Issue 1 Date 27 11 02 Page 11 R I R REVIEW ITEM DISCREPANCY Title of Document Experiment Management Plan Reference of Document None Section and Page of Document Figure 7 4 4 1 Virtis master Schedule
14. attached draft document VI RTI S for VEX DDV Plan Board Comment RIRvirtis TNote 1 answer doc Instrument Experiment VIRTIS Importance MAJOR RID Identification Reviewer ID EB 6 Domain ID DEV Reviewer Recommendation Please would you provide a specific VEX Design Development and Verification Plan including gt the model philosophy proposed for VEX with models qualification status versus to VEX requirements MEX PIDA and partnership agreement requirements gt the qualification approach versus to VEX module by module and at VIRTIS instrument level when delta design are identified Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN I Ref gt VEX ASTR T TCN 0275 Issue Date 27 11 02 Page 23 R I R REVIEW ITEM DISCREPANCY Title of Document Experiment Design Verification Reference of Document RO EST RS 3001 EID B Vol 4 Section and Page of Document Paragraph 4 2 p 4 19 Synthesis of the Comment TEST MATRIX TO BE PROVIDED FOR EACH VIRTIS MODULE MOUNTED ON THE DIFFERENT VEX MODELS Reviewer Comment or Question The experiment test matrix shall be provided specifically for VEX on the base of the proposed models P I or E M Answer Merge with RI D EB6 DEV Board Comment RIRvirtis TNote 1 answer doc
15. lengths need to be clarified P I or E M Answer The length values of the cables used in the ROSETTA mission to inter connect the VIRTIS modules are written in the document VI RTI S MASS POWER and DATA RATE BUDGET para 4 2 page 7 Data Package Design and AnalysesVPayload 5 ystem P L Resources Budged VVX GAF BD 001 Is 1 Board Comment RIRvirtis TNote 1 answer doc Instrument Experiment VIRTIS Importance MAJOR RID Identification Reviewer ID RO 2 Domain ID SYS Reviewer Recommendation Please clarify the length of the provided cables for VIRTIS and where these data can be found in your documentation Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN I Ref gt VEX ASTR T TCN 0275 Issue Date 27 11 02 Page 55 R I R REVIEW ITEM DISCREPANCY Title of Document EID B Vol VI Mission Ops Requirements Reference of Document RO EST RS 3015 Section and Page of Document 6 3 2 2 4 p9 Synthesis of the Comment REQUIREMENTS FOR CO ALIGNMENT WAS 7 FOR ROSETTA W R T PFS AND ASPERA ON VEX Reviewer Comment or Question The document specifies 7 co alignment accuracy wrt Other instruments on Rosetta What are the co alignment pointing requirements with the other VEX instruments both on the same mounting X panel e g
16. no Reviewer Position wrt Answer access from the external at S C level Cover mechanism Mechanism description and data can be found in Rosetta EI D B section 2 212 No potential hazard due to mobile devices during AIT activities the cover door is a light plate moving very slowly about 30 sec for full actuation inside the Optics Module no access from the external at S C level Paraffin actuator data can be found in Rosetta EI D B section 2 5 The paraffin operating temperature is around 709C the actuator is specified not to prematurely operate below 65 C Operating temperature range is from 148 C to 60 C No potential hazard due to heating during AIT activities the actuator is located inside the Optics Module no access from the external at S C level No risk of paraffine spreading all over around thanks to the double sealing stage All mechanisms have been qualified for Rosetta on dedicated engineering life models Board Comment Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN RIRvirtis TNote 1 answer doc I Ref gt VEX ASTR T TCN 0275 Issue Date 27 11 02 Page 54 R I R REVIEW ITEM DISCREPANCY Title of Document PID A Compliance matrix Reference of Document VIR DES TN 1792 Section and Page of Document 2 2 Synthesis of the Comment LENGTH OF VIRTIS CABLES TO BE DEFINED FOR VEX Reviewer Comment or Question Cable
17. of Document Synthesis of the Comment COMPATIBILITY OF DETECTORS TO VEX RADIATION ENVIRONMENT TO BE CONFIRMED Reviewer Comment or Question Paragraph 5 2 7 Calibration Shutters and TIC coated ball bearings are CIL items What is the life duration margin which has been achieved by the life tests compared to the mission life duration requirement Paragraph 5 2 5 IR detectors IR FPA shall be able to withstand total dose of 3 Krads Si AND ARE latch up free May be it is not sufficient with regards to VEX radiation conditions Please clarify P I or E M Answer Shutter lif etime Shutters are used for calibration every minute worst case VI RTIS in flight operation 1000 H i e 60 000 cycles On ground testing 200 H i e 12 000 cycles So according to PI D A 8 4 14 2 the Lifetime test requirement 4 12 000 2 60 000 2168 000 cycles As a 270 000 cycles test has been already performed during ROSETTA VIRTIS development there is no need for additional testing for VEX IR detectors RIRvirtis TNote 1 answer doc Instrument Experiment VIRTIS Importance MAJOR RID Identification Reviewer ID RO 3 Domain ID QPA Reviewer Recommendation Would you clarify in the Instrument description document what is the test demonstrated margin in terms of life duration compared to the VEX requirement Moreover would you confirm that the total dose of 3 Krads Si demonstrated as acceptable f
18. of VEX application 3 As a third step the acceptability for VEX of the remaining ROSETTA RFW s and NCR s non analysed in the frame of the 2 first steps will be assessed through a specific review with Astrium Indeed even if ROSETTA RFWs and NCRs are not relevant to MEX PID A neither to the ROSETTA H W to be used on VEX they have to be specifically analysed in the frame of VEX Instrument Experiment VIRTIS Importance MAJOR RID Identification Reviewer ID EB 9 Domain ID QPA Reviewer Recommendation Please would you provide for VEX VIRTIS the full compliance matrix to the MEX PID A by identifying when status is non compliant the reference of the relevant ROSETTA RFWs or NCRs if any Then would you attach these relevant ROSETTA RFW s and NCR s in annex of your compliance matrix Would you provide the definition d the ROSETTA models intended to be used on VEX and their corresponding NCR s if any Would you provide in a specific file the ROSETTA NCR s and REW s which are not relevant to the PID A neither to the ROSETTA H W for VEX This file will then be assessed with Astrium through a specific review P I or E M Answer Reviewer Comment on Answer RIRvirtis TNote 1 answer doc f gt VEX ASTR T TCN 0275 1 L y 27 11 02 Jenus express 32 A Compliance Matrix to PI D A with the reference to NCRs and RFW s will be provided refer to previous EB 9 QPA RI D also R
19. section will be updated for VEX operation scenario in the next issue RIRvirtis TNote 1 answer doc Instrument Experiment VIRTIS Importance MAJOR RID Identification ESOCO3 Reviewer ID RT Domain ID ESA ESOC Reviewer Recommendation Provide overview document outlining the main changes in mission operations for Venus Express and their impact on the instrument design and operations Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN Board Comment RIRvirtis TNote 1 answer doc Ref VEX ASTR T TCN 0275 Issue 1 y Date 271102 Aenus express Page 78 Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN I Ref gt VEX ASTR T TCN 0275 Issue Date 27 11 02 Page 79 R I R REVIEW ITEM DISCREPANCY Title of Document EID B Vol VI Mission Ops Requirements Reference of Document RO EST RS 3015 Section and Page of Document 6 3 2 3 3 P10 Synthesis of the Comment WHAT ALTERNATIVE EXISTS FOR SPECTRAL CALIBRATION OF BOTH CHANNELS TO THE EARTH FLY BY OBSERVATIONS FOR ROSETTA Reviewer Comment or Question Observation of the Earth s atmosphere will allow accurate spectral calibration of both channels How essential for spectral calibration are the Earth fly by observations What alternatives exist to satisfy these requirements For example during NEO commissioning woul
20. 11 02 Page 9l R I R REVIEW ITEM DISCREPANCY Title of Document Reference of Document PID B VEX VeRA IGM 3001 PID B Section and Page of Document 2 5 5 4 4 1 4 3 table 7 1 9 1 Synthesis of the Comment S band uplink for solar corona 60 days of solar corona measurements 6 5 h solar corona measurements day Reviewer Comment or Question Nominal uplink will be in X band Nominal ground station is Cebreros X band only Operational concept for 24h orbit reserves short pass slots in New Norcia in pericentre for VeRA apocentre communications with Cebreros in X band P I or E M Answer RIRvirtis TNote 1 answer doc Instrument Experiment VERA Importance Minor RID Identification ESOC 11 Reviewer ID RT Domain ID OPS Reviewer Recommendation VeRA to clarify if S band uplink is a requirement for solar corona experiments Vera to clarify duration of overall solar corona campaign and required minimum daily duration Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN Board Comment RIRvirtis TNote 1 answer doc Ref VEX ASTR T TCN 0275 Issue 1 y Date 271102 Aenus express Page 92 Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN f Ref VEX ASTR T TCN 0275 Issue 1 Date 27 11 02 Page 93 R I R REVIEW ITEM DISCREPANCY Title of Document Instrumen
21. 2 Page 16 R I R REVIEW ITEM DISCREPANCY Title of Document CIL Reference of Document VIR GAL LI 068 Section and Page of Document Synthesis of the Comment TO PROVIDE THE CLOSURE JUSTIFICATION OF THE ACTIONS IDENTIFIED AS ON GOING Reviewer Comment or Question Issue dated 2 Sept 98 contains several actions which are still On going P I or E M Answer VIRTIS CIL VI R GAL LI 068 has been updated Issue 2 is now available Board Comment RIRvirtis TNote 1 answer doc Instrument Experiment VIRTIS Importance Minor if editorial RID Identification Reviewer ID RO 5 Domain ID MGT Reviewer Recommendation Please confirm the latest information available on the topics identified as on going and provide the closure of these actions particularly if applicable to VEX Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN Ref VEX ASTR T TCN 0275 Issue Date 21 11 02 Page 17 R I R REVIEW ITEM DISCREPANCY Title of Document PID A Compliance Matrix and List of NC s PA Reference of Document Section and Page of Document Synthesis of the Comment UPDTATE THE COMPLIANCE MATRIX TO PID A Reviewer Comment or Question PSA and WCA are NC and Safety program is PC This is not in line with VIRTIS PA Pl
22. E o FL i O PR O BS O RD 0 RE O RFD RFW Request for Waiver Re Repor General SOS RS Requirements Specification SS Support Specification SW S W Requirement Document SY Te TN O TE TR UR PE XN 0 0507 WE Document LAC 0 AD BD LOC ooo cH System Specification User Requirement Document Verification Control Document Environmental Specification Statement of Work Table 1 Document type code Acceptance Certificate Document Architectural Design Document Certificate of Conformance Chart Schedule CH CL maa N Contract Change Notice CT Cmmst SOS DC Document Change Notice DD Detail Design Document SSS DN Delivery Note DP Data Package General pw Drawing EC Engincenng Change Proposal ECP FED End em Data Package SOS HB Handbooks operation req etc TIC Interface Control Document IRo sid Inspection Report IS Interface Specification LB losBok O O MA MT NW PL PR PS RF REW RS SS SW SY TE TN TP TR UR VC VS WSs AC AD CC CL CN CT DC DD EC IC LB LI List Gieneral RIRvirtis TNote 1 answer doc R I R REVIEW ITEM DISCREPANCY Title of Document Instrument description Reference of Document V VX GAF RP 001 Section and Page
23. MAJOR Synthesis of the Comment RID Identification Reviewer ID JPSD 8 IFOD010 Domain ID ELC Reviewer Comment or Question Reviewer Recommendation IF no additionnal switching the risk is in case of LCL failure Would you confirm that these in short circuit failures are acceptable for the To get a permanent power consumption even in S C Puen safe mode whereas the payload should be off To get the payload powered both on A and B side Is this tolerable P I or E M Answer Reviewer Comment on Answer See the relevant issued RFW Permanent power consumption is no problem when S C is in safe mode VI RTIS will reset the DPU restart of Virtis saf e mode as soon as S C communication breaks down after some minutes Powering of main and redundant side is possible without damaging VIRTIS but not acceptable as operational failure mode Closed or OPEN Reviewer Position wrt Answer Board Comment Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN RIRvirtis TNote 1 answer doc f Ref VEX ASTR T TCN 0275 Issue 1 Date 27 11 02 Page 73 R LR REVIEW ITEM DISCREPANCY Title of Document Instrument Experiment Reference of Document VIR GAL LI 087 VIRTIS Section and Page of Document Importance MAJOR Synthesis of the Comment RID Identification Reviewer ID LG 1 EMC QUALIFICATION STATUS Domain ID EMC R
24. Position wrt Answer Closed or OPEN Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN I F ress Ref gt VEX ASTR T TCN 0275 Issue Date 27 11 02 Page 15 R I R REVIEW ITEM DISCREPANCY Title of Document Experiment Management Plan Reference of Document None Section and Page of Document Overall document Synthesis of the Comment VEX Reference to be provided for the management plan Reviewer Comment or Question No reference has been provided to the Experiment Management Plan This shall be done for next update P I or E M Answer OK it will be done for the future Moreover an effort should be done on both sides from a PI D B and a PI D A point of view to provide this docs referenced as VEX program in order to reduce as much as possible any reference to MEX or ROSETTA Board Comment RIRvirtis TNote 1 answer doc Instrument Experiment VIRTIS Importance Editorial minor RID Identification Reviewer ID EB 5 Domain ID MGT Reviewer Recommendation Please would you put a VEX reference to the Experiment management Plan document for its next update Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN I Ref gt VEX ASTR T TCN 0275 Issue Date 27 11 0
25. RVATIONS Reviewer Comment or Question Reviewer Recommendation For Rosetta VIRTIS SIWA comet closest approach is 2550km Pericenter pass for Venus will be 250km Is the angular velocity for nadir pointing requirement met by MEX VEX bus P I or E M Answer Reviewer Comment on Answer The dwell time of a pericenter at 250km in altitude does not allow imaging of VIRTIS during the pericenter pass and indeed the observation at pericenter will be spectral type while the imaging capability will be used for altitude higher than about 6000km in general and for the apocenter in particular Reviewer Position wrt Answer Closed or OPEN RIRvirtis TNote 1 answer doc Board Comment RIRvirtis TNote 1 answer doc f gt VEX ASTR T TCN 0275 1 L y 2741 02 enus express 82 Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN f Ref VEX ASTR T TCN 0275 Issue 1 Date 27 11 02 Page 83 R I R REVIEW ITEM DISCREPANCY Title of Document EID B Vol VI Mission Ops Requirements Instrument Experiment Reference of Document RO EST RS 3015 VIRTIS Section and Page of Document Importance 6 5 4 p22 MAJOR Synthesis of the Comment RID Identification ESOC 07 Reviewer ID RT EXPANDED HOUSEKEEPING MONITORING TELEMETRY DATA REQUIRED FOR SPECIFIC VENUS ORBIT OPERATIONAL CONDITIONS Reviewer Comment or Question Reviewer Recommen
26. This matter will be hopefully deeper discussed at the RIR I n all cases an official position f rom ESA releasing RIRvirtis TNote 1 answer doc Instrument Experiment VIRTIS Importance MAJOR RID Identification Reviewer ID EB 2 Domain ID MGT Reviewer Recommendation Please would you provide an updated schedule in accordance with requirements the partnership agreement by different delivered models identifying the Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN f Ref VEX ASTR T TCN 0275 Issue 1 y Date 271102 enus express Page 12 all the proprietary items from ROSETTA is needed MEN Board Comment Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN RIRvirtis TNote 1 answer doc I Ref gt VEX ASTR T TCN 0275 Issue Date 27 11 02 Page 13 R I R REVIEW ITEM DISCREPANCY Title of Document Experiment Management Plan Reference of Document None Section and Page of Document Pragraph 7 2 p 16 27 Synthesis of the Comment RELATIONSHIP WITH ESA ASTRIUM PROJECT OFFICE TO BE DESCRIBED IN THE DOCUMENT Reviewer Comment or Question Formal communication administrative and technical data exchange reviews are TBD This shall be updated in next issue of the management plan P I or E M Answer This section will be updated soon after the RI R where poss
27. VIDED IN ANY OF THE DOCUMENTATION EID B TI WHAT ALTERNATIVE EXISTS FOR SPECTRAL CALIBRATION OF BOTH CHANNELS TO THE EARTH FLY BY COE FRV AT INSTORE KOTT EA aaia iaaa ai 79 DO THE SPECIFIED ANGULAR VELOCITIES FOR VARIOUS DISTANCES TO TARGET MATCH FOR VENUS xime we E E I EENE ERT EPEA EE AAE AAEE EAEE nee EA AE EE EOE PETER A T Sl EXPANDED HOUSEKEEPING MONITORING TELEMETRY DATA REQUIRED FOR SP ECIFIC VENUS ORBIT OPERATIONAL CONDITIONS c e 83 A D iii SEALE LT 7 t 5 S band uplink for solar corona 60 days of solar corona measurements 6 5 h solar corona TELL 7 99 2 eoe 9 7 3 4 3 1 S C WILL TRANSMIT A ONE WAY X BAND DOWNLINK DRIVEN BY THE USO 97 AT LEAST 4 DIFFERENT ATTITUDES OR SLEW RATES ARE REQUIRED FOR VERA OPERATION 99 RIRvirtis TNote 1 answer doc f Ref gt VEX ASTR T TCN 0275 Issue 1 y Date 271102 eGnus express Page 5 DISTRIBUTION LIST p emeesncn J FABREGA D KOLBE D TRILLARD G NOYER R FOURNIER D GOTTSCHLAG T SCHIRMANN C SCHLOSSER J BARRIERE S PENALVA JP DURAND B GILLOT C BILLARD P PERES D GERBAZ M PATRONCINI N MIDAN R CASPAR G MORANDINI A CLOCHET G PICCIONI IASF CNR P DROSSART LESIA E SUETTA GALILEO AVIONICA located at MMS Toulouse RIRvirtis TNot
28. a possible power consumption of 70W plus 11W M Cover plus 6 5W H Cover total of current is 3 4A 26V 28 296 Rout l load As defined in PID A the LCL class is depending on the maximum nominal current therefore LCL class F is required The EICD RO EST RS 3001 EI D B envelope limits that VI RTIS Inrush current should respect Please consider the RO VI R N CR 0056 also Board Comment page 18 shows the RIRvirtis TNote 1 answer doc 87 5W 2 the maximum nominal Instrument Experiment VIRTIS Importance MAJOR RID Identification Reviewer ID JPSD 3 Domain ID ELC Reviewer Recommendation the inconsistency between EICD and Please would you clarify EIR compliance matrix and confirm that Class D LCL 1s suitable for 28V instrument bus Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN f Ref VEX ASTR T TCN 0275 Issue 1 Date 27 11 02 Page 6 7 R I R REVIEW ITEM DISCREPANCY Title of Document Instrument Experiment Reference of Document RTXXXX EIR compliance matrix VIRTIS Section and Page of Document p 5 Importance Minor or MAJOR Synthesis of the Comment RID Identification Reviewer ID JPSD 5 IF0D030 Domain ID ELC Reviewer Comment or Question Reviewer Recommendation Storage Heater will not be necessa
29. an contents VIR GAL PL 007 issue 3 April 1999 for which activities have to be done and requirements Some stress little exists after Electronic Thermal analysis Hazard analysis seems done but not issued Could we get information on the necessary data in line with PA plan in order to check the suitability of the design Is PA plan still valid some called standards are obsolete and replaced today P I or E M Answer A dedicated VI RTI S for Venus Express PA Plan is foreseen In the frame of the Rosetta Program PSA WCA and Hazard Analysis have not been considered anymore by ESA and ASI as baseline documents hence they have not been produced As a consequence PSA WCA and Hazard Analysis are not foreseen for VIRTIS for Venus Express More details will be available within the Compliance Matrix to PI D A which is to be provided Board Comment RIRvirtis TNote 1 answer doc Instrument Experiment VIRTIS Importance Minor or MAJOR RID Identification Reviewer ID RO 7 Domain ID MGT Reviewer Recommendation Please confirm the suitability of PA plan to VEX program and update it if necessary Please provide the justification data the NC and PC issue RFW if relating to statements and necessary Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN Board Recommendation No action or ACTION Board Position wrt RID Closure Ref VEX
30. at hot conditions 60 C including 10 C margin for answer to RID ESOC2 RT OPS EMC requirements EMC Assessment not yet performed e Thermal Environment to be provided qualification see also Radiation Assessment not yet performed Board Comment RIRvirtis TNote 1 answer doc Instrument Experiment VIRTIS Importance MAJOR RID Identification Reviewer ID RO 6 Domain ID QPA Reviewer Recommendation To provide the status of suitability of the QSL s with regards to VEX Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN J Ref gt VEX ASTR T TCN 0275 Issue Date 27 11 02 Page 44 R I R REVIEW ITEM DISCREPANCY Title of Document FMECA Reference of Document VIR GAL TN 070 Section and Page of Document Synthesis of the Comment FMECA TO BE UPDATED AND USER MANUAL TO REFLECT THE IDENTIFIED CONSTRAINTS Reviewer Comment or Question Paragraph 9 HW SW Interaction analysis shall be completed today according to the Software Req document VIR GAL UR 040 Appendix A Main electronics FMECA There are several items 1 4 2 1 4 7 1 17 1 18 with remark safety aspect for S C Is this constraint mentionned and highlighted in the User Manual to be considered at satellite level P I or E M Answer Paragraph 9 HW SW
31. d VIRTIS require an Earth observation pass 1 e specific pointing attitude RIRvirtis TNote 1 answer doc Instrument Experiment VIRTIS Importance MAJOR RID Identification ESOCO5 Reviewer ID RT Domain ID OPS Reviewer Recommendation f gt VEX ASTR T TCN 0275 1 L y 27 11 02 enus express 80 P I or E M Answer Reviewer Comment on Answer From a calibration point of view VIRTIS for VEX does not require a specific observation of the Earth and it can be excluded in the baseline An optimum spectral calibration can be performed directly looking at VENUS atmosphere Nevertheless a possible campaign of Earth observation should be discussed only in the field of a near Earth verification of the instrument Reviewer Position wrt Answer Closed or OPEN Board Comment Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN RIRvirtis TNote 1 answer doc f Ref VEX ASTR T TCN 0275 Issue 1 Date 27 11 02 Page 8l R I R REVIEW ITEM DISCREPANCY Title of Document EID B Vol VI Mission Ops Requirements Instrument Experiment Reference of Document RO EST RS 3015 VIRTIS Section and Page of Document Importance Table 6 1 4 p13 MAJOR Synthesis of the Comment RID Identification ESOC06 Reviewer ID RT DO THE SPECIFIED ANGULAR VELOCITIES FOR Domain ID OPS VARIOUS DISTANCES TO TARGET MATCH FOR VENUS OBSE
32. d or OPEN f Ref VEX ASTR T TCN 0275 Issue 1 Date 27 11 02 Page 103 R LR REVIEW ITEM DISCREPANCY Title of Document Instrument Experiment Reference of Document PID B VERA VEX VeRA IGM 3001 PID B Section and Page of Document Importance Paragraph 7 1 6 3 Minor Synthesis of the Comment RID Identification ESOC 17 Reviewer ID RT Required accuracy is highest feasible l Domain ID OPS Reviewer Comment or Question Reviewer Recommendation It is assumed that the orbit information will not exceed the Clarify n case of a quantitative accuracy that is anyway required for operational purposes high accuracy requirement the feasibility and the required effort at ESOC needs to be investigated Why is information required on thruster firing times P I or E M Answer Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN RIRvirtis TNote 1 answer doc Board Comment RIRvirtis TNote 1 answer doc Ref VEX ASTR T TCN 0275 Issue 1 y Date 271102 Aenus express Page 104 Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN
33. d named as VEX science orbits4 pdf Please note that the scientific observations can t be frozen today since a more general discussion will be done at the next Venus SWT and more specifically for VIRTIS at the next general meeting supposed to be planned at the end of J anuary beginning of February after the AO extra team selection by ESA Board Comment RIRvirtis TNote 1 answer doc VEX ASTR T TCN 0275 27 11 02 20 Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN f Ref VEX ASTR T TCN 0275 Issue 1 Date 27 11 02 Page 21 2 2 DEVELOPMENT AIV AND SCHEDULE RIRvirtis TNote 1 answer doc I F ress Ref gt VEX ASTR T TCN 0275 Issue Date 27 11 02 Page 22 R I R REVIEW ITEM DISCREPANCY Title of Document Experiment Design Verification Reference of Document RO EST RS 3001 EID B Section and Page of Document Overall document Synthesis of the Comment MODELS DEFINITION PROVIDED TO VEX TO BE DEFINED Reviewer Comment or Question The Experiment Design Verification being the ROSETTA one it does not enable to identify what will be the definition of the different models dedicated to VEX neither to analyse their representativity and their suitability for the different steps of the program P I or E M Answer S ee
34. dation Most important housekeeping data for the instrument health Confirm no change to HK TM Domain ID OPS relate to critical temperatures of instrument components data rates for VEX VIRTIS Are these sufficient for VEX science operations scenarios considering the more extreme thermal environment for VEX P I or E M Answer Reviewer Comment on Answer The HK TM data rates seem sufficient Reviewer Position wrt Answer Closed or OPEN RIRvirtis TNote 1 answer doc Board Comment RIRvirtis TNote 1 answer doc f gt VEX ASTR T TCN 0275 1 L y 27 11 02 enus express 84 Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN I F ress Ref gt VEX ASTR T TCN 0275 Issue Date 27 11 02 Page 85 R I R REVIEW ITEM DISCREPANCY Title of Document Reference of Document Rosetta EID B RO EST RS 3015 EID B Section and Page of Document 6 3 2 2 2 Synthesis of the Comment Alignment attitude required Reviewer Comment or Question It is not clear if the VIRTIS requirement requires an additional spacecraft attitude P I or E M Answer This question is not clearly understood VIRTIS operations in terms of alignment accuracy and stability are compliant to the VEX or MEX resources and no additional request is foreseen from this point of view If the present has to be intended in terms of spacecraft or
35. dent and free of short circuit failure propagation from N to R P I or E M Answer Heaters if mounted are provided and installed by VIRTIS but ACA SYS RID Decontamination H eaters see also for Storage heaters can be subject to short circuit failure see FM ECA document APPENDIX D item M 19 Nominal and redundant are completely independent and free of short circuit failure propagation Board Comment RIRvirtis TNote 1 answer doc Instrument Experiment VIRTIS Importance MAJOR RID Identification Reviewer ID JPSD 2 Domain ID ELC Reviewer Recommendation Please would you clarify in the updated document Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN I Ref VEX ASTR T TCN 0275 Issue Date 27 11 02 Page 66 R I R REVIEW ITEM DISCREPANCY Title of Document Reference of Document RTXXXX EIR compliance matrix Section and Page of Document p ii Synthesis of the Comment IFOD 030 TO CLARIFY THE LCL CLASS FOR MAIN ELECTRONICS Reviewer Comment or Question Assuming a peak power consumption of 70W according to VEX EICD a class D LCL instead of F should be enough 2 6A Can you confirm 70W is not consistent with EICD page 18 Imax 3 8A P I or E M Answer The VEX EICD power budget VVX GAF BD 001 shows
36. e operational plan for actual Venus orbits without contradictions Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN Board Comment RIRvirtis TNote 1 answer doc f gt VEX ASTR T TCN 0275 1 L y 2741 02 enus express 98 Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN I Ref gt VEX ASTR T TCN 0275 Issue Date 27 11 02 Page 99 R I R REVIEW ITEM DISCREPANCY Title of Document Reference of Document PID B VEX VeRA IGM 3001 PID B Section and Page of Document table 4 1 4 1 3 figure 4 1 4 5 6 7 table 7 1 4 1 Synthesis of the Comment AT LEAST 4 DIFFERENT ATTITUDES OR SLEW RATES ARE REQUIRED FOR VERA OPERATION Reviewer Comment or Question VeRA required attitudes are not part of the baseline attitudes in the Venus Express offer Thermal and power problems to be expected for the spacecraft Strong influence on operational concept especially in connection with a 24 h orbit Switch to USO and ONED required after entry into occultation S band uplink required for bistatic radar table 7 1 2 1 requires no S band uplink at all P I or E M Answer RIRvirtis TNote 1 answer doc Instrument Experiment VERA Importance MAJOR RID Identification ESOC 15 Reviewer ID RT Domain ID OPS Reviewer Recommendation Clarify VeRA to take into account actual Venus orb
37. e 1 answer doc f VEX ASTR T TCN 0275 L y 27 11 02 JeGnus exoress 6 1 SCOPE This document presents the current set of Review Item Discrepancies or RID s on the Visible Infra Red Thermal Imaging Spectrometer VIRTIS data package that have jointly been developed by ESA and ASTRIUM in the context of this instrument Recurrent Instrument Review RIR An overview of the RID s may be found within the Table of Contents pages 111 to 1v which gives all RID Titles MAJOR RID s in capital Minor ones in small letters Let us recall here that the objectives of the RIR review are as follows e To approve the overall EM QM FM PFM designs including a thorough verification of the physical interfaces and overall technical budgets e To approve the qualification and acceptance programmes in particular as their detailed definition and related schedule are concerned to be detailed as presented in annex 4 of document VEX TN O144 T ASTR e To make a complete check of all on ground for AIT in flight operation schemes via a thorough examination of system AIT and user manuals as extracted from the PID A their definition is recalled within the annexes 2 and 3 of the document VEX TN 0144 T ASTR RIRvirtis TNote 1 answer doc f gt VEX ASTR T TCN 0275 1 L y 27 11 02 enus exoress 7 2 VIRTIS R LR R I D S The various Review Item Discrepancies RID s are joined hereafter and classified accordin
38. e bistatic radar attitudes in detail Reduction of observation time required Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN f gt VEX ASTR T TCN 0275 1 L y 2741 02 enus express 88 Board Comment Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN RIRvirtis TNote 1 answer doc f Ref VEX ASTR T TCN 0275 Issue 1 y Date 27 11 02 JeGnus exoress Page 89 R I R REVIEW ITEM DISCREPANCY Title of Document Instrument Experiment Reference of Document PID B VERA VEX VeRA IGM 3001 PID B Section and Page of Document Importance 2 5 5 3 Minor Synthesis of the Comment RID Identification ESOC 10 Reviewer ID RT Several passes above selected targets are required l Domain ID OPS Reviewer Comment or Question Reviewer Recommendation How do you do several passes above selected targets in Venus Clarify required spacecraft attitude orbit and orbit P I or E M Answer Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN RIRvirtis TNote 1 answer doc Board Comment RIRvirtis TNote 1 answer doc Ref VEX ASTR T TCN 0275 Issue 1 y Date 271102 Jenus express Page 90 Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN I Ref gt VEX ASTR T TCN 0275 Issue Date 27
39. e of Rosetta mission The EQM model is representative of the VIRTIS ROSETTA FM model both for electrical and S W Fs except for the following Reviewer Position wrt Answer Closed or OPEN 1 The PROM software i e primary boot functions is EM version VI R DLR LI 021 release note is available in the data package For what concerns the PEMs they are connected to dummy loads ROI C for I RFPA EM CCD for VIS FPA resistors for the other loads Power supply Coolers load because of different operative conditions The present performances of EEE 1355 interface is reported in annex to the RI D A upgrading activity to adapt the Rosetta EQM model to Venus EM requirements is under evaluation for what concerns the PROM and EEPROM software in the Main Electronics and the Programmable Logic Devices in the PEMs The estimated time to RIRvirtis TNote 1 answer doc f gt VEX ASTR T TCN 0275 1 L y 27 11 02 Jenus express 25 upgrade and re test the model is about 12 months before the delivery Board Comment Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN RIRvirtis TNote 1_answer doc f Reference VVX DLR TN 001 T Ge Issue 1 Hewes VIRTIS ex sunm Page 26 104 VIRTIS 1355 TM Interface Performance This Technical Note sumarizes the performance of the VIRTIS instrument Rosetta VIRTIS FM Software V3 61 used for VVX EM and baseli
40. entification ESOCOI Reviewer ID RT Domain ID QPA Reviewer Recommendation Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN f gt VEX ASTR T TCN 0275 1 L y 27 11 02 J enus express 47 Lui The IR FPAs are operating ON only during the science acquisition detector switch ON OFF capability Only the time of detectors activities shall be considered in the 1 yr operative lif e limit not all the time of VI RTIS activities Board Comment Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN RIRvirtis TNote 1 answer doc f gt VEX ASTR T TCN 0275 1 L y 27 11 02 6NUS express 48 2 4 SYSTEM DESIGN RIRvirtis TNote 1 answer doc I Ref gt VEX ASTR T TCN 0275 Issue Date 27 11 02 Page 49 R I R REVIEW ITEM DISCREPANCY Title of Document Mathematical models Reference of Document Section and Page of Document General Synthesis of the Comment THE MATHEMATICAL MODELS TO BE UPDATED WITH THE VEX SUPPORT BRACKET Reviewer Comment or Question According to meeting of last 14 of November the mathematical models will have to be updated to take into account the VIRTIS support bracket P I or E M Answer The mathematical models will be updated as soon as the structural and thermal interf aces will be f rozen Board Comment RIRvirtis TNote 1 answer doc Inst
41. equency of the smallest one depends on the compression level no compression lossless or lossy compression Increasing the TM packet size from now 1024bytes to 4112bytes required would cause a change of the RTOS used for VIRTIS and therefore a full re qualification of software would be needed which must be avoided Therefore a detailed analysis on VIRTIS and SSMM side should be used to see where the performance criticality is located and to keep 1024byte max TM packet size Refer to Annex of RID EB 8 DEV Board Comment RIRvirtis TNote 1 answer doc Instrument Experiment VIRTIS Importance MAJOR RID Identification Reviewer ID JL Domain ID SYS Reviewer Recommendation Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN Board Recommendation No action or ACTION RIRvirtis TNote 1 answer doc Ref VEX ASTR T TCN 0275 Issue 1 y Date 271102 enus express Page 51 Board Position wrt RID Closure Closed or OPEN f Ref VEX ASTR T TCN 0275 Issue 1 Date 27 11 02 Page 52 R LR REVIEW ITEM DISCREPANCY Title of Document CIL Instrument Experiment Reference of Document VIR GAL LI 068 iss 1 VIRTIS Section and Page of Document Importance Page 5 MAJOR Synthesis of the Comment RID Identification Reviewer ID NM 01 COMPLEMENTARY INFORMATION W R T SHUTTERS COVERS AND PARAFFIN ACTUATORS ARE REQUIRED Re
42. eviewer Comment or Question Reviewer Recommendation Many NC to EMC requirements are identified What is their Please provide 9 e e status compliance matrix to EMC What are the design modifications if any that could have some requirements of VEX PID A D l l EMI impacts analysis of possible EMI impact of design modifications if any P I or E M Answer Reviewer Comment on Answer All the NCRs are closed Compliance matrix to EMC requirements will be provided At the moment no modifications are foreseen Reviewer Position wrt Answer Closed or OPEN Board Comment Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN RIRvirtis TNote 1 answer doc Ref VEX ASTR T TCN 0275 Issue 1 y Date 27 11 02 GNUS exporress Page 74 2 9 OPERATION AND SOFTWARE RIRvirtis TNote 1 answer doc I rm express Ref VEX ASTR T TCN 0275 Issue 1 Date 27 11 02 Page 75 R I R REVIEW ITEM DISCREPANCY Title of Document EID B Vol VI Mission Ops Requirements Reference of Document Section and Page of Document 6 3 2 p6 Synthesis of the Comment FULL INSTRUMENT OPERATION CANNOT BE GUARANTEED BELOW 1 4AU Reviewer Comment or Question Instrument power dissipation from Main Electronics Module is such that operations cannot be guaranteed for heliocentric distances below 1 4 AU MEM dissipation has been
43. eviewer Position wrt Answer Closed or OPEN Board Comment Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN RIRvirtis TNote 1 answer doc f Ref VEX ASTR T TCN 0275 Issue 1 Date 27 11 02 Page 33 R LR REVIEW ITEM DISCREPANCY Title of Document Parts materials and processes lists Instrument Experiment Reference of Document VIR GAL LI 069 iss 3 VIR GAL LI VIRTIS 081 iss 1 VIR GAL LI 082 iss 1 Section and Page of Document Importance Minor Synthesis of the Comment RID Identification Reviewer ID CSJ 03 Red marked copies shall be formalised l Domain ID QPA Reviewer Comment or Question Reviewer Recommendation Each document is a red marked copy They should be formally issued P I or E M Answer Reviewer Comment on Answer It s not foreseen an editorial updating The PMP lists will be accurately reviewed for compliance to Virtis for Venus project This will be done after the implementation of the minor design changes foreseen for Venus Reviewer Position wrt Answer Express Closed or OPEN RIRvirtis TNote 1 answer doc Board Comment RIRvirtis TNote 1 answer doc f gt VEX ASTR T TCN 0275 1 L y 27 11 02 lenus express 34 Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN f Ref VEX ASTR T TCN 0275 Issue 1 y Date
44. f Ref VEX T ASTR TCN 0275 Issue 1 V Date 29 11 02 enus expres Page i Visible Infra Red Thermal Imaging Spectrometer VIRTIS Recurrent Instrument Review R I D s set Nameand Function ame and Function Date Signature Prepared by ESA ASTRIUM 29 11 02 Verified by E Brugn ra 29 11 02 Venus Express Payload Architect 29 11 02 Approved by A Clochet Venus Express Payload Manager DEM u m Application J Fabrega authorized by Venus Express Project Manager mM The copyright in this document is the property of Matra Marconi Space France and the contents may not be reproduced or revealed to third parties without prior permission of that company in writing RIRvirtis TNote 1 answer doc f Ref VEX T ASTR TCN 0275 l Issue 1 V Date 29 11 02 enus express Page ii SUMMARY This document presents the current set of Review Item Discrepancies or RID s on the Visible Infra Red Thermal Imaging Spectrometer VIRTIS data package that have jointly been developed by ESA and ASTRIUM in the context of the VIRTIS Recurrent Instrument Review RIR An overview of the RID s may be found within the Table of Contents pages 111 to 1v which gives all RID Titles MAJOR RID s in capital Minor ones in small letters Document controlled by RIRvirtis TNote 1 answer doc Ref VEX T ASTR TCN 0275 e Issue 1 L i Date 29 11 02 ENUS express Page iii TABLE
45. f the Comment RFW S NCR S AND ANY ECR APPLICABLE TO VEX Reviewer Comment or Question All the ROSETTA Request and Non Conformance Reports are provided They cannot be accepted For Waivers without proper VEX system assessment We propose the following logics to assess them carefully in the frame of VEX program l As a first step and for Astrium review a clear VIRTIS compliance status to the MEX PID A requirements VEX applicable document shall be given with potential reference in case of NC status to either one Rosetta RFW or one Rosetta NCR as relevant Note I the relevant NCR s can only be confirmed after identification of the Rosetta models to be used on VEX 2 As a second step the acceptability for VEX of the remaining Rosetta RFW s and NCR s and non analysed in the frame of the first step will be assessed through a second and probably less critical review with Astrium RIRvirtis TNote 1 answer doc Instrument Experiment VIRTIS Importance MAJOR RID Identification Reviewer ID EB 9 Domain ID QPA Reviewer Recommendation Please VEX VIRTIS the full compliance matrix to the MEX PID A by identifying when status is non compliant NC the 1 Would you provide for reference of the relevant Rosetta RFWs or NCRs if any Then would you attach these relevant Rosetta RFW s and NCR s in annex of your compliance matrix Note 3 these RFW s an NCR s will
46. g to the following domains Domain Domain ID MAJOR Minor Management MGT 6 2 Development AIV and Schedule DEV 4 Product Assurance QPA 6 2 System Mission Design SYS 6 0 Science Performances SCI 0 0 Mechanical and Thermal MTH l 0 AOCS AOC 0 0 Electrical and EMC ELC 8 0 Operations and Software OPS 8 7 TOTAL 39 12 RIRvirtis TNote 1 answer doc Ref VEX ASTR T TCN 0275 Issue 1 y Date 271102 enus express Page 8 2 1 MANAGEMENT RIRvirtis TNote 1 answer doc Ls express Ref gt VEX ASTR T TCN 0275 Issue Date 27 11 02 Page 9 R I R REVIEW ITEM DISCREPANCY Title of Document Experiment Management Plan Reference of Document none Section and Page of Document Pargraph 7 6 3 p27 Synthesis of the Comment DOCUMENTATION FOR RIR DATA PACKAGE Reviewer Comment or Question The PI accepts to deliver to Astrium ESA all the documentation needed for the project in agreement to the data package requested still TBC As requested by the PID A the following documents shall be provided specifically for VEX program The full compliance matrix with regards to VEX MEX PID A applicable document The Design Development and Verification Plan DDVP relating to VEX program The ROSETTA mathematical models updated with regards to VEX interfaces mechanical and thermal interfaces in particular due to the specific VEX support bracket The VEX Flight User Manual
47. ibly this matter will be discussed Board Comment RIRvirtis TNote 1 answer doc Instrument Experiment VIRTIS Importance MAJOR RID Identification Reviewer ID EB 3 Domain ID MGT Reviewer Recommendation Please would you complete the document by providing the chapters 7 2 1 7 2 2 and 7 2 3 Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN I Ref gt VEX ASTR T TCN 0275 Issue Date 27 11 02 Page 14 R I R REVIEW ITEM DISCREPANCY Title of Document Experiment Management Plan Reference of Document None Section and Page of Document Pragraph 7 4 5 p 17 27 Synthesis of the Comment REPORTING TO BE CLARIFIED IN THE MANAGEMENT PLAN Reviewer Comment or Question Reporting is TBD in the document It is proposed to discussed this issue at RIR in order to agree a way to proceed P I or E M Answer This section will be updated soon after the RIR where this matter will be discussed as suggested Board Comment RIRvirtis TNote 1 answer doc Instrument Experiment VIRTIS Importance MAJOR RID Identification Reviewer ID EB 4 Domain ID MGT Reviewer Recommendation Please would you update the document since this issue will have been discussed with Astrium and ESA Reviewer Comment on Answer Reviewer
48. ientation operations it has to be discussed at SWT level RIRvirtis TNote 1 answer doc Instrument Experiment VIRTIS Importance Minor RID Identification ESOC 08 Reviewer ID RT Domain ID OPS Reviewer Recommendation VIRTIS to investigate compliance for alignment attitude with baseline spacecraft attitudes Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN f gt VEX ASTR T TCN 0275 1 L y 2741 02 enus express 86 Board Comment Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN RIRvirtis TNote 1 answer doc I F ress Ref gt VEX ASTR T TCN 0275 Issue Date 27 11 02 Page 87 R I R REVIEW ITEM DISCREPANCY Title of Document Reference of Document Rosetta Radioscience Investigations Prelaunch Experiment Performance Report RO RSI IGM RP 3115 Section and Page of Document 6 3 Synthesis of the Comment A typical bistatic radar session will be in the order of a few hours Reviewer Comment or Question Bistatic radar operation of a few hours will require a special attitude with changing angles Baseline spacecraft attitudes do not cover this case P I or E M Answer RIRvirtis TNote 1 answer doc Instrument Experiment VERA Importance Minor RID Identific ation ESOC 09 Reviewer ID RT Domain ID OPS Reviewer Recommendation VERA to defin
49. ion No action or ACTION Board Position wrt RID Closure Closed or OPEN RIRvirtis TNote 1 answer doc I F ress Ref gt VEX ASTR T TCN 0275 Issue Date 27 11 02 Page 46 R I R REVIEW ITEM DISCREPANCY Title of Document Rosetta VIRTIS EID B Reference of Document RO EST RS 3015 EID B Section and Page of Document Vol 1 Experiment Description 1 2 2 5 p22 FPA IR Detectors Synthesis of the Comment Manufactured screened devices for Rosetta intended to be used for 1 yr operational life is this sufficient for VEX Reviewer Comment or Question The IR FPA selected for the Rosetta VIRTIS mission are intended for operating life 1 yr 120 cycles from 200K to 65K Is this appropriate for the foreseen science operations scenario for VEX VIRTIS P I or E M Answer To be verified against the mission scenario considering the following note The IR FPAs are qualified for VIRTIS M 199 cycles from 300K to 85K 30 cycles from 310K to 65K VI RTI S H 234 cycles from 300K to 85K 30 cycles from 310K to 65K Taking into account that the foreseen flight temperature cycle is from 150K to 80K we can consider the limit of 229 for M and 264 for H as a valid limits The flight temperature cycles have a delta temperature reduced by a factor of three respect qualification delta temperature RIRvirtis TNote 1 answer doc Instrument Experiment VIRTIS Importance MAJOR RID Id
50. it VeRA to detail slew rates and attitudes and experiment durations Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN Board Comment RIRvirtis TNote 1 answer doc Ref VEX ASTR T TCN 0275 Issue 1 y Date 271102 Aenus express Page 100 Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN f Ref VEX ASTR T TCN 0275 Issue 1 y Date 27 11 02 AIeGnus exoress Page 101 R I R REVIEW ITEM DISCREPANCY Title of Document Instrument Experiment Reference of Document PID B VERA VEX VeRA IGM 3001 PID B Section and Page of Document Importance 7 1 2 1 Minor table 7 1 3 1 Synthesis of the Comment RID Identification ESOC 16 Reviewer ID RT TWOS is compatible with use of Cebreros ground station Experimental use of this mode is unclear Dorman aS Reviewer Comment or Question Reviewer Recommendation TWOS could in principal be used in apocentre of 24 h orbit Is Clarity there an operational use for X band TWOS P I or E M Answer Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN RIRvirtis TNote 1 answer doc Board Comment RIRvirtis TNote 1 answer doc Ref VEX ASTR T TCN 0275 Issue 1 y Date 27 11 02 GNUS ecxoress Page 102 Board Recommendation No action or ACTION Board Position wrt RID Closure Close
51. n Reviewer Recommendation Max fault voltage is 7V instead of 5V required The detail of Assuming 7V is confirmed by the the power supply failure analysis is not provided how do you failure analysis to be provided get 7V Can you provide it would you provide a formal RFW with the justification P I or E M Answer Reviewer Comment on Answer Over voltage on the VIRTIS Power Supply output lines is limited per design to the following maximum values 5V max 6 35V DHSU incl S C I F V H V M 5 IFE max 5 85V 12V max 18V 12V max 18V 121V max 26V Reviewer Position wrt Answer Closed or OPEN If over voltage occurs the VIRTIS Power Supply is switched off completely within t 250ms In case of VIRTIS power supply failure the S C I F digital V is designed in order to have a max out voltage lower than 6 35V If requested a formal RFW will be provided Board Comment Board Recommendation No action or ACTION RIRvirtis TNote 1 answer doc RIRvirtis TNote 1 answer doc Ref VEX ASTR T TCN 0275 Issue 1 y Date 271102 enus express Page 71 Board Position wrt RID Closure Closed or OPEN Ref VEX ASTR T TCN 0275 Issue 1 y Date 271102 enus express Page 72 R I R REVIEW ITEM DISCREPANCY Title of Document Instrument Experiment Reference of Document RTXXXX EIR compliance matrix VIRTIS Section and Page of Document p 3 Importance
52. n in MEX MMT SP007 I FDG 001 was not required by Rosetta therefore is TBC for VVX For what concerns MARS EXPRESS Space Ground ICD SGICD MEX ESC IF 5001 5 1 we understand from the email by Elisabeth BRUGNERA dated 3 12 2002 that the mentioned document is obsolete and that it will replaced by two documents the generic TM TC ICD MEX MMT IF 0936 issue2 Rev2 the VEX Payloads TM TC and Software ICD to be issued Please provide these two documents Board Comment RIRvirtis TNote 1 answer doc Instrument Experiment VIRTIS Importance MAJOR RID Identification Reviewer ID JPSD 6 Domain ID ELC Reviewer Recommendation Please would you update the EIR complianc matrix by clarifying the TC and TM protocole asap Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN Board Recommendation No action or ACTION Board Position wrt RID Closure f gt VEX ASTR T TCN 0275 wl 1 L y 27 11 02 enus express gt 69 RIRvirtis TNote 1 answer doc Ref VEX ASTR T TCN 0275 Issue 1 y Date 271102 Jenus express Page 70 R I R REVIEW ITEM DISCREPANCY Title of Document Instrument Experiment Reference of Document RTXXXX EIR compliance matrix VIRTIS Section and Page of Document p 45 Importance MAJOR Synthesis of the Comment RID Identification Reviewer ID JPSD 7 IFDT020 Domain ID ELC Reviewer Comment or Questio
53. ne for VVX FM on the high speed 1355 interface to the S C SSMM After analysis of interface performance calculation and partially measurements some parameter are defined to be able to analyse the SSMM performance at Astrium These parameter are requirements to the S C SSMM to operate VIRTIS in worst case modes Generally and analysed in detail see below the following interface performance parameter are applicable Interface frequency data rate short peak TM data rate during TM packet transfer Data rate nominal science modes Data rate maximum worst case modes Average TM rate over long time in M and H nominal science modes up to hours Average TM rate over long time in M and H maximum worst case modes up to hours IM packet maximum size during a TM packet burst TM minimum packet size during a TM packet burst TM packet frequency during a TM packet burst Burst a Sub Slice with 512words TM packet IM packet average frequency during External Repetition Time ERT SSIMM allowed peak latency once between TM packets within External Repetition Time ERT S W timeout for TM packet transfer before TM packet data loss and event issue SSMM allowed average latency between end of TM packet 1 to start of TM packet 2 during External Repetition Time ERT 10MBit s gt 6MBit s M SCIENCE NOMINAL 1 H DATA NOMINAL OBSERVATION M Test M ERT25sec No Compression or M CALIBRATION No Compressi
54. ng from 001 for each document category and for each Company Remarks his code together with the Issue N and date of Issue will he shown on the first pase and on the tap righi hand corner of each page of the document e fhe successive updates of document shall be identified by their issue number e Revision within the same issue e g issue J revision 3 are not allowed The first issue of a document is issue I issue 0 nor allowed e for Waiver Deviation Document Change Notice NCR Project Directive Log Book issue is nor required Document Coding System GA International Partners Subcontractors and Main Supplier will comply with the requirements for identification and coding of deliverable items as follow The code ts assembled in the sequence VVX CCC DD NNN VVX Program Code VIRTIS for Venus Express CCC Company Code that i5 e Galileo Avionica Firenze GAF Insitut fuer Planeteterkundung DLR DLR Germany Observatoire de Pans DESPA France DES Techno System Italy TCS Laben Italy LAB e Kayser Threde KAY Istituto di Astrofisica Snaziale Ttalv IAS RIRvirtis TNote 1 answer doc Ref gt VEX ASTR T TCN 0275 ANNEX 1 TO RIR RO 01 QPA Issue Date i 317 102 Page 37 Manual S W Repair manuals ete NCR Non Conformance Repon Project Directive Procedure General Procurement Specifications Request for Deviation Request for Deviation NW O O PB P
55. on H SCIENCE MAXIMUM DATA RATE H IRT2 00ms No Compression or H SCIENCE BACKUP H IRTz5000msec No Compression lt S KBit s see SUM VIR DLR MA 006 lt 1084KBit s see SUM VIR DLR MA 006 212 words of each TM Packet except last one during 1 25msec gt 14 words of last TM Packet during 1 25msec 2 19 TM packets during 1 25msec lt 3 5msec during gt 5sec lt 500msec during 5sec lt 2 1msec during gt 5sec S C latency packet Available Transfer Time packet Archived Transfer Time packet Archived Transfer Time packet 512words TM packet 16bit word 6Mbit s 1 4msec TM packet Available Transfer Time packet 800ms 228 packets 5 5ms packet S C latency packet 3 5ms packet 1 4ms packet 2 1ms packet Worst case is M VIS Slice transfer without binning without compression max time for M VIS Slice transfer 0 8s M VIS acquisition time 3 5s processing time 0 s Note measured with SIS latency 0 2ms TM packet transfer time incl latency 1 3ms Lona peak TM rate during about 600ms interface transfer time gt 2 34MBit s 3 omsec packet 3 5msec 512words 16bit word 2 34Mbit s Rinvitus 11N0tc 1 auswetr uoc J Ref VEX ASTR T TCN 0275 Issue 1 Date 27 11 02 Page 27 R I R REVIEW ITEM DISCREPANCY Title of Document CR RFW NCR lists and compliance matrix Reference of Document Section and Page of Document Synthesis o
56. or the detectors is well compatible of VEX radiations environment Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN The requirement spec for the IR detector M and H channels procurement asked for a 3krad total dose radiation tolerance taking into account the Rosetta mission environment For the EOL analysis the device dark current was assumed to be increased of 3 times after 3 Krad Si total dose Actually the measured dark current of the devices is 10 times less then the one assumed for the above analysis Therefore the IR detector is able to withstand the Venus expected total dose with sufficient margin A irradiation test on IR SCA model has been performed and report is available in the Vex Data Package Verification and Al T Qualification section in the CD ROM A first calculation of the total radiation dose of the M channel for the Venus Express mission by means of the equivalent aluminum thickness calculation gives the following results Nominal mission 1 969 Krad Si Extended mission 3 426 Krad Si For what concerns the latch up problem the device is not latch up free guaranteed but the manufacturer analysis Raytheon doc PL5617 explains that the probability to activate the latch up phenomenon is close to zero if the detector works at cryogenic temperature Board Comment RIRvirtis TNote 1 answer doc Board Recommendation No action or ACTION Board Position w
57. r Operation of antenna in one MM duration and nadir pointing not yet part of spacecraft baseline attitudes tude of bistatic radar Power and thermal control may be critical P I or E M Answer Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN RIRvirtis TNote 1 answer doc Board Comment RIRvirtis TNote 1 answer doc Ref VEX ASTR T TCN 0275 Issue 1 y Date 271102 Jenus express Page 96 Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN J Ref gt VEX ASTR T TCN 0275 Issue Date 27 11 02 Page 97 R I R REVIEW ITEM DISCREPANCY Title of Document Reference of Document PID B VEX VeRA IGM 3001 PID B Section and Page of Document 2 6 2 6 table 4 1 4 2 Synthesis of the Comment LINK BUDGET IS GIVEN FOR X BAND ONLY TABLE 4 1 4 2 REQUIRES S BAND AND X BAND 7 3 4 3 1 S C WILL TRANSMIT A ONE WAY X BAND DOWNLINK DRIVEN BY THE USO Reviewer Comment or Question Is S band and X band required for bistatic radar Is X band only possible Is S band link budget sufficient distances gt 0 7 AU P I or E M Answer RIRvirtis TNote 1 answer doc Instrument Experiment VERA Importance MAJOR RID Identification ESOC 14 Reviewer ID RT Domain ID OPS Reviewer Recommendation VeRA to clarify use of S band and link budget for bistatic radar Provid
58. reduced by 30 for Rosetta Is this sufficient for VEX foreseen science operations scenario Is it foreseen for VEX VIRTIS to operate only either M or H channels independently Is the VEX VIRTIS simultaneous operations of M and H channels radiator design compatible with P I or E M Answer The full instrument operation not guaranteed below 1 4 AU is an ECR issued in the frame of the Rosetta mission n operative terms it means that the maximum full power operative I F temperature for ME is 40 C at the TRP Above 40 C only operations at reduced power are allowed only one channel at a time either V M or V H can be operated See also the Tech Note VVX GAF TN 002 VIRTIS Qualification Status w r t VEX Mechanical amp Thermal Requirements VIRTIS ME FM tested 60 C environment steady in 70 ME operational mode The derating temperatures of 80 C of some components incl PCB will slightly be exceeded in this case In the frame of Rosetta has been qualif ication successfully at conditions state condition power RIRvirtis TNote 1 answer doc Instrument Experiment VIRTIS Importance MAJOR RID Identification ESOCO2 Reviewer ID RT Domain ID OPS Reviewer Recommendation Clarify Main El Module dissipation VEX science operations constraints impact on environment Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN J pm express The Main Elect
59. rily a class A as this Please would you update the EIR heater will be surely be put in parallel with other ones compliance matrix document by VIRTIS PI to provide the heater value tbd rather than P roviding the heater value and by the class clarifying if both nominal and redundant heaters can be ON Can this heater be ON permanently with the redundant On permanently simultaneously as well P I or E M Answer Reviewer Comment on Answer The Storage heaters hot redundancy used for the Rosetta Mission are 10K resistors RNC90 TBC for VEX after a thermal analysis when up dated boundary conditions See also RI Ds J SPD1 ELC and J PS D2 ELC Reviewer Position wrt Answer Closed or OPEN Board Comment Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN RIRvirtis TNote 1 answer doc Ref VEX ASTR T TCN 0275 Issue Date 21 11 02 Page 68 R I R REVIEW ITEM DISCREPANCY Title of Document Reference of Document RTXXXX EIR compliance matrix Section and Page of Document p 13 Synthesis of the Comment IFDG010 amp 025 Reviewer Comment or Question Compliance to TC and TM protocole to be cheked asap P I or E M Answer The telemetry and telecommand protocols are described in the VI RTI S Rosetta EI DB vol 2 7 TC TM protocol is compliant to Rosetta EI D A incl PSS 04 106 017 47 TTC B 01 PSS 04 151 as show
60. rom VIRTIS FM Acceptance Data Package in paper form as follows Section 1 MNaone oO Section 2 Mane 0 section 3 More section 4 Hone o section Mone o Section 8 Qualification Status List w section 7 DCL DML DFL 0 section 8 Drawings section 8 Diagrams Section 10 List of Waivers w section 11 Configuration Status List w Section 12 Serialized components list section 13 Software User Manuals o section 14 None o section 15 None o section 16 None o section 17 None o Section 18 None w Section 19 hone 0 section 20 Nonae 0 section 21 Mone 1 Da Ennco Suetta enrico suettacmofficine galileo finmeccanica it Inviato giovedi 31 ottobre 2002 17 24 A Maurizio Giustini Oggetto Fwd Preliminary set of VIRTIS VEX DP 2222222 iginal Message Oggetto Preliminary set of VIRTIS VEX DP Data Fri 11 Oct 2002 17 58 45 0200 Da Giuseppe Piccioni piccioniitrm iasf enr it Rainer Timm rainer timmipesa int Hans Eggel hans eggelmesa int Alain Clochet alain clochetdbastrium space com CC Enrico Suetta Enrico Suetta enrico suettadqpofficine galileo inmeccanica it Gabriele Arnold gabriele arnoldgdir de Angioletta Coradini coradiniglas rm cnr it Pierre Drossant Pierre Drossart pierre drossartgpobspm fr Dear all in the tight schedule of VEX it seems to me fruitful to send to you a preliminary set of the
61. ronic can be operated in 450 C environment 40 C 10 C qualification margin in full power mode without performance degradation considering all derating requirements Note maybe the ME thermal time constant of 3 5 hours heating up time could be considered for VI RTI S operation The eventual impact on VEX science operations will be assessed after a more detailed clarification of the VI RTIS operational requirements and the updated VEX S C environment Board Comment RIRvirtis TNote 1 answer doc Ref gt VEX ASTR T TCN 0275 Issue Date 27 11 02 Page 76 Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN I Ref gt VEX ASTR T TCN 0275 Issue Date 27 11 02 Page 77 R I R REVIEW ITEM DISCREPANCY Title of Document GENERAL Reference of Document N A Section and Page of Document N A Synthesis of the Comment NO VENUS EXPRESS SPECIFIC INFO IS PROVIDED IN ANY OF THE DOCUMENTATION EID B Reviewer Comment or Question Is it intended to provide a summary of the main consequences for VIRTIS of the very different VEX mission from Rosetta These have been provided in a summary document for MEX PFS for example For example in the Vol VI Mission Ops Req section a mission timeline for modes data rates power consumption is needed P I or E M Answer The 6 3 of EI D B vol 6 is tuned for the ROSETTA mission and this
62. rt RID Closure Closed or OPEN R I R REVIEW ITEM DISCREPANCY Title of Document Configuration Status List Instrument Experiment Reference of Document VIRTIS Section and Page of Document Importance MAJOR Synthesis of the Comment RID Identification Reviewer ID RO A VIRTIS CONFIGURATION STATUS LIST TO BE PROVIDED Domain ID QPA Reviewer Comment or Question Reviewer Recommendation Please would you provide the Only ME SW and ME PROM SW Configuration status lists are complete VIRTIS configuration provided status list for VEX Is an overall VIRTIS Configuration status list available P I or E M Answer Reviewer Comment on Answer VIRTIS Configuration Status is identified in the CI DL VI R GAL CL 104 is 6 and in the called subsystem level CI DLs All the CI DLs system and subsystem level have been already sent by PI in paper copies see enclosed mail and they are also available in electronic form in the RI R Data Package CD Reviewer Position wrt Answer ROM at the following path Configuration As Designed Configuration Cidl Closed or OPEN Board Comment Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN RIRvirtis TNote 1 answer doc List of items provided CD containing VIRTIS Rosetta EID B issue 2 and full VIRTIS FM Acceptance Data Package VIRTIS Rosetta EID B issue 2 in paper form extract f
63. rument Experiment VIRTIS Importance MAJOR RID Identification Reviewer ID EB 11 Domain ID SYS Reviewer Recommendation Please would you update the mathematical models when both structural and thermal interfaces will be frozen Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN I Ref gt VEX ASTR T TCN 0275 Issue Date 27 11 02 Page 50 R I R REVIEW ITEM DISCREPANCY Title of Document Reference of Document VVX GAF TN xxx Ed 1 draft Section and Page of Document IFDC 452 pages 8 amp 15 28 Synthesis of the Comment High speed TM packetisation requirement Reviewer Comment or Question Wrt VIRTIS for VEx PID SOC amp EID partB 2 8 A IFDC 452 4112 byte length is an upper CCSDS packet overall size limit not required to be reached B IFDC 452 Supplementary header is 4 byte long typo C Through VEX MMT CR xxxx Ed 1 0 dated 10 09 2002 the IFDC 452 requirement states that high speed link CCSDS packets shall have a minimum size of 1024 bytes This is a critical major issue dealing with DMS SSMM dynamic performance P I or E M Answer VI RTIS High speed telemetry is formatted in packets of max 1024 bytes This means that for each slice all the packets are 1024 byte long except the last one that can be smaller The fr
64. ss 62 2 7 ELECTRICAL amp EMC RIRvirtis TNote 1 answer doc f Ref VEX ASTR T TCN 0275 Issue 1 y Date 271102 Jenus express Page 63 R I R REVIEW ITEM DISCREPANCY Title of Document Instrument Experiment Reference of Document RTXXXX EIR compliance matrix VIRTIS Section and Page of Document p ii Importance MAJOR Synthesis of the Comment RID Identification Reviewer ID JPSD 1 ASTRIUM ANSWERS TO QUESTIONS MENTIONED PII IFOD 010 Domain ID ELC Reviewer Comment or Question Reviewer Recommendation 1 In order to power ON OFF switching High Power Please would you update the EIR Commands shall be effectively used compliance matrix with Astrium 2 1 TC ON and 1 TC OFF per LCL is OK We confirm answers to items and 2 that one relay switch status telemetry channel is required With regards to point 3 would you per switch confirm that there is no constraint If the heater lines can be switched ON permanently for heater power supply In other there is no need for a serial switch Otherwise 2 serial 619 n case of LCL failure could you confirm that it would be thermoswitches are required on each line acceptable for the instrument to have both nominal and redundant heaters ON for a long duration P I or E M Answer Reviewer Comment on Answer Answer to bullets 1 and 2 The EIR compliance matrix will be updated No High Power Commands are used for VVX Re
65. t Experiment Reference of Document PID B VERA VEX VeRA IGM 3001 PID B Section and Page of Document Importance figure 2 2 2 Minor figure 2 2 2 2 Synthesis of the Comment RID Identification ESOC 12 Reviewer ID RT Distance of 2 5 AU menitioned in text distances below 0 7 AU depicted in graph Domain ID OPS Revie wer Comment or Question Reviewer Recommendation VeRA to correct graph and text Maximum distance is 1 7 AU Minimum distance for parallel S band and X band operation is 0 7 AU No S band below 0 7 AU P I or E M Answer Reviewer Comment on Answer Reviewer Position wrt Answer Closed or OPEN RIRvirtis TNote 1 answer doc Board Comment RIRvirtis TNote 1 answer doc Ref VEX ASTR T TCN 0275 Issue 1 y Date 271102 Jenus express Page 94 Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN f Ref VEX ASTR T TCN 0275 Issue 1 Date 27 11 02 Page 95 R I R REVIEW ITEM DISCREPANCY Title of Document Instrument Experiment Reference of Document PID B VERA VEX VeRA IGM 3001 PID B Section and Page of Document Importance 2 6 2 6 MAJOR Synthesis of the Comment RID Identification ESOC 13 Reviewer ID RT TRANSMISSION POWER AND NADIR POINTING IN PARALLEL Domain ID OPS Reviewer Comment or Question Reviewer Recommendation VeRA Duration and precise attitude unclea
66. viewer Comment or Question Reviewer Recommendation Domain ID SYS You mentioned on page 5 the presence of shutters covers and Please provide detailed information paraffin actuators I did not find any details on these device on these devices mechanisms either in FMECA Technical description or User Manual Confirm that there 1s no potential hazard during AIT activities due to Please provide more information on these devices operations mobile devices or temperature Are the shutters one shot devices overheating What is the operating temperature of the paraffin Confirm also that there is no risk of What is the power consumption paraffin spreading all over the What is the range of time needed in flight to open or close such inumnenponclepumi devices What is the qualification status of these devices Is there preventive monitoring which avoids the paraffin to leak overheat or spread outside the actuators RIRvirtis TNote 1 answer doc f Ref VEX ASTR T TCN 0275 Issue 1 y Date 27 11 02 GNUS exoress Page 53 P I or E M Answer Reviewer Comment on Answer e Shutter mechanism it is not a one shot device Mechanism description and data can be found in Rosetta EI D B section 2 2 1 2 No potential hazard due to mobile devices during AIT activities the shutter blade is a few grams element moving inside the V M Closed or OPEN and V H optical heads inside the Optics Module
67. viewer Position wrt Answer Closed or OPEN Answer to bullet 3 A RFW concerning additional switches has been issued and it is given along the answer to the RI Ds For what concerns decontamination heaters see answer to RI D AC4 SYS The Storage Heaters hot redundancy are not operative heaters whose purpose is to heat the CCD during cruise hibernation in order to avoid any damage to the device During non operative phases they can remain switched on without problems but if switched on during science acquisition the RIRvirtis TNote 1 answer doc f gt VEX ASTR T TCN 0275 1 L y 2741 02 AJenus express 64 performance of VIRTIS M can be affected no damage but possible S N decrease on the I RFPA channel The Storage Heaters are still considered in the Vex baseline Board Comment Board Recommendation No action or ACTION Board Position wrt RID Closure Closed or OPEN RIRvirtis TNote 1 answer doc I Ref VEX ASTR T TCN 0275 Issue Date 27 11 02 Page 65 R LR REVIEW ITEM DISCREPANCY Title of Document Reference of Document RTXXXX EIR compliance matrix Section and Page of Document p ii Synthesis of the Comment ASTRIUM ANSWERS TO QUESTIONS MENTIONED PII IF0D 010 FOLLOWING Reviewer Comment or Question Are heaters of the VIRTIS heaters lines provided and installed by VIRTIS Are there subject to short circuit failure Are Nominal and redundant indepen

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