円形計算尺の主な特徴
Contents
1. OHLAR b Ces 90 9 900 9000 5 XE EH ESSE2. lt gt nautical miles statute mile km gt U S gallon imperial gallon liter lt pound kg lt gt FUEL pound e3K7ZjB U S gallon imperial gallon OIL pound U S gallon imperial gallon B BH nautical mile OK VAUT 1NAUT 1 852km statute mile OR i UO STAT 1 609km KM kilometerONE 1km 3280feet FT feet liter O 264U S gallon ll O 228IMP sgallon U S gallon O VA U S GAL 1U S gallon O 833IMP gallon i 3 78liter imperial gallon IMP GAL 1IMP gallon 1 2U S gallon 4 545liter KG kilogramODRE amp 1kg 2 228pound LBS pound 1pound 0 45
3. 40 hi d m EJ Ex O 23 IB 1 1820 5 120 X ReBlsreROCICIa EIEEBESESO 10 1 200MPH A T E W 100 60 G 0 10 Wi d o EE EI BE 8 0D UE 30 30 30 o EH ERE sp Aa fr E BE 100 30 30 10 60 G 0 00 200MPH e 300 5 175 CORSI XE ERHOB 3O C Rl amp n EI BE SS CDZALIB
4. A B A ax10 1 a b 10 B bx10 C C cx10 z A XB C a b c z z x y cza bo z x y 1 c a bo A B C g b c z z x y ab z x y 1 a lt b 1 qm s es m 3G0 40 F CHEE R 88 OD 238 10 2E in EH E88 0D 248 GO ZAD 40 hix d 5 EJ EX 8 OD 23 B 1 100 1200 1200 120 40 8 40 12 10 30 3 3 30 10 40 10 30
5. LITERS U S GAL 42 IMP GAL 35 42 35 13 1 RR 13 1 Ic e n EJ RS 8S OD FUEL LBS U S GAL 1 8 18 IMP GAL 5 XE EH RSS OD ZAUIB 18 2 Tei 1 8 25 18 1 82 16 4 gt ROA 8 16 4 OIL LBS U S GAL 1 8 18 IMP GAL 18
6. 3 430FT 18 6 10 43 18 6 80 8000 K 8000FT d 18 6 8000FT 18 6 80 10 43 430FT 430FT 430FT 8000FT CATERED IOE 43 80 18 6 18 6
7. 1 82 25 18 1 82 HW2 PROSPEX 0408 HOBOHBSRDX L 2 1 105 8467 AIT J Tt SSN RR INSTRUCTION 0 T T 3 T x X The watch is not a measuring instrument Please note that the flight data that its rotary slide rule gives can only serve as a general guideline This rotary bezel type slide rule is designed for rapid calculations and conversion of various essential flight data required by pilots With this rotary slide rule a wide variety of computations are
8. 40 3 STAT NAUT 35 KM 64 8 357 88 64 8 e o 8772707 VYJ 35 Rise 35 IMP GAL U S GAL 4 LITERS OX 15 9 159 42 159 AE 64 8 8 COBRE EH 88 OD 248 64 8 Er E E80 KM ODAKEET E pli EJ ESSSOD STAT OD AED Cox I9 e IxE EI BESS COL 40 3 NAUT 35 5 40 3 35 liter QU y 3 XJ07 707 159 15 9
9. 1 7 5 pue 60 35 35 200MPH 30 f 60 Bx88 0 28M BO Zr 0 8 6 30 10 100 E 100 300 5 35 60 35 30 17 5 175 175 175 35 60 35 17 5 30 300 3005 5
10. innage 175 gallons Fuel consumption rate 3o gallons hour Solution Adjust 35 on the rotary bezel to 60 on the fixed scale Read the value on the fixed dial ruler that corresponds to 1 7 5 on the rotary bezel The reading is 30 Answer 300 minutes 5 hours 3 Calculation of climbing attitude climbing rate and climbing time Calculation of climbing altitude Problem Climbing rate 430 FT minute Climbing time 18 6 minutes Altitude to reach Solution CDAdjust 43 on the rotary bezel to 10 on the fixed scale Find the value on the rotary bezel corresponding to 18 6 on the fixed scale The reading is 80 Answer 80OOFT BCalculation of climbing rate Problem Climbing rate Climbing time 18 6 minutes Altitude to reach 8000 FT Solution CDAdjust 80 on the rotary bezel to 18 6 on the fixed scale Find the value on the rotary bezel cor responding to 10 on the fixed scale The reading is 43 Answer 430 FT minute OCalculation of climbing time Problem Climbing rate 430 FT minute Climbing time Altitude to reach 8000 FT Solution CDAdjust 43 on the rotary bezel to 10 on the fixed scale Find the value on the fixed scale corre sponding to 80 on the rotary bezel The reading is 18 6 Answer 18 6 minute E DETERMINING THE PLACES OF FIGURES After reading the value on the rotary bezel scale determine the places of figures following
11. US GAL amp Imperial gallons IMP GAL DESCRIPTION OF MARKINGS ON THE ROTARY SLIDE RULE ial Marking Explanation NAUT Abbreviation of nautical mile 1 NAUT 1 852 km STAT Abbreviation of statute mile 1 STAT 1 609 km Distance KM Abbreviation of kilometer 1 KM 3 280 feet FT Abbreviation of feet 1 liter 0 254 US gallons LITERS 0 22 imperial gallons Abbreviation of US gallon 1 US GAL 0 833 imperial gallons Fuel U S GAL l 3 78 liters Abbreviation of imperial gallon 1 IMP GAL 1 2 US gallons IMP GAL 4 545 liters KG Abbreviation of kilogram 1 KG 2 22 pounds LBS Abbreviation of pounds 1 pound 0 45 kg Abbreviation of fuel pounds 1 fuel pound O 167 US gallons Weight FUEL LBS 0 139 IMP gallons Abbreviation of oil pounds 1 oil pound 0 133 US gallons OIL LBS 0 1 1 1 IMP gallons Note 1 knot 1 NAUT h 1 852kg h Conversion between nautical miles statute miles and kilometers Nautical miles Statute miles Kilometers Problem 35 nautical miles statute miles gt kilometers Solution Bring the NAUT index on the rotary bezel in line with 35 the fixed scale Find the value on the fixed scale corresponding to the STAT index of the rotary bezel The reading is 40 3 Find the value on the fixed scale corresponding to the KM index of the rotary bezel The reading is 64 8 Answer 40 3 statute miles 64 8 kilo
12. ed scale The value on the rotary bezel corresponding to 60 on the fixed scale is read to be 20 Answer 200MPH ODistance calculation Problem Ground speed 200 MPH Distance to fly Time to fly 30 minutes Solution Adjust 20 on the rotary bezel to 60 on the fixed scale The value on the rotary bezel that corresponds to 30 on the fixed scale is 10 Answer 100 miles e Calculation of fuel consumption rate fuel quantity required and remaining cruising time Calculation of fuel consumption rate Problem Time to fly 300 minutes 5 hours Fuel consumption 175 gallons Fuel consumption rate Solution Adjust 17 5 on the rotary bezel to 30 on the fixed scale The rotary bezel scale value corresponding to 60 on the fixed scale is read as 35 Answer 3o gallons hour FUEL CONSUM REOUIRED PTION RATE The following formula apples to all the calculations above xMinute is used as the time unit FUEL QUANTITY TIME TO FLY quantity required Problem Time to fly 300 minutes 5 hours Fuel required Fuel consumption rate 35 gallons hour Solution Bring 35 on the rotary bezel in line with 60 on the fixed scale Read the value on the rotary bezel which corresponds to the value 30 on the fixed scale The reading is 17 5 Answer 175 gallons OCalculation of the time remaining for cruising Problem Time available for cruising Fuel
13. kg FUEL pound FUEL LBS TFUEL pound O 167U S sgallon 0 139IMP gallon oil DOund OIL LBS 1OIL pound 0 1 33U S gallon 0 1 1 IIMP gallon Tknot 1 NAUT h 1 852km h 0 8 nautical miles statute milesS km 35 COSI XE EJ ES 88 OD 23 8 35 IC Hl in EI ESSO NAUT ODAEII Cppl n E ESBSOD STAT ODAED Cox I 9 BIxE E BRSSCOZA 40 3 KM 64 8 40 3 64 8 4 42 U S GAL IMP GAL 35 LITERS OX 15 9 159 35 159 40 3 F
14. meters miles Kilometers Problem 40 3 statute miles nautical miles kilometers Solution Adjust the STAT index of the rotary bezel to 40 3 on the fixed scale Find the value on the fixed scale that corresponding to the NAUT index of the rotary bezel The reading is 35 Find the value on the fixed scale that corresponding to the KM index of the rotary bezel The reading is 64 8 Answer 35 nautical miles 64 8 kilometers OKilometers Statute miles Nautical miles Problem 64 8 kilometers statute miles nautical miles Solution Adjust the KM index of the rotary bezel to 64 8 on the fixed scale Find the value on the fixed scale that corresponding to the STAT index of the rotary bezel The reading is 40 3 Find the value on the fixed scale that corresponding to the NAUT index of the rotary bezel The reading is 35 Answer 40 3 statute miles 35 nautical miles Conversion between US gallons imperial gallons and liters AUS gallons Imperial gallons Liters Problem 42 US gallons Imperial gallons Liters Solution Adjust the US GAL index of the rotary bezel to 42 on the fixed scale CFind the value on the fixed scale corresponding to the IMP GAL index of the rotary bezel The reading is 35 QFind the value on the fixed scale corresponding to the LITERS index of the rotary bezel The reading is 15 9 Answer 35 impe
15. possible including ordinary multiplication computation of flight speed fuel consumption and unit conversion 0 0120 612 911 0 Q Q 0 0 V Q V Q 0 0 ooo z zm 3 1010044 2 1 10 0 5500013 1 424 y 8 T0600061 7 20 1 ae 4 4 T 8100801 5 1 22 6 je cte t t t t t oo f oo lo t 0 1 oo ooo EMAIN FEATURES OF ROTARY SLIDE RULE Multiplication division and rule of three calculation can be made Computations for navigation including calculations of flight speed fuel consumption rate and climbing rate can be performed Conversions of various units such as distance conversion fuel volume conversion and weight conversion can be performed E DESCRIPTION OF SCALES Conversion scale Logarithmic scale on fixed scale To read the value apply the same rule as with the logarithmic scale on rotary bezel E ORDINARY COMPUTATION Logarithmic scale on rotary bezel Any value on the logarithmic scale is relative for example 80 assumes any values that are the n th power of 10 multiplied by i
16. rial gallons 159 liters gallons Liters Problem 35 Imperial gallons US gallons Liters Solution Adjust the IMP GAL index of the rotary bezel to 35 on the fixed scale Find the value on the fixed scale corresponding to US GAL index of the rotary bezel The reading IS 42 QFind the value on the fixed scale corresponding to the LITERS index of the rotary bezel The reading is 15 9 Answer 42 US gallons 159 liters OLiters US gallons Imperial gallons Problem 159 liters US gallons Imperial gallons Solution Adjust the LITERS index of the rotary bezel to 15 9 on the fixed scale Find the value on the fixed scale corresponding to the US GAL index of the rotary bezel The reading is 42 Find the value on the fixed scale corresponding to the IMP GAL index of the rotary bezel The reading is 35 Answer 42 US gallons 35 imperial gallons amp Fuel pounds US gallons Imperial gallons Problem 13 1 fuel pounds US gallons Imperial gallons Solution DAdjust the FUEL LBS index of the rotary bezel to 13 1 on the fixed scale Find the value on the fixed scale corresponding to the US GAL index of the rotary bezel The reading is 21 8 Find the value on the fixed scale corresponding to the IMP GAL index Imperial gallons Problem 16 4 oil pounds gt US gallons Imperial gallons Solution DAdjust the OIL LBS index of
17. the procedures below Please note that the following formulas do not apply to some calculation such as conversion Any number can be given by an exponential expression as follows Assume A a x 10x B b x 10 C 10z D C lt 10 Multiplication If AX B C 1 Find c from the rotary bezel scale Please note that 1 lt c lt 10 If c is more than 10 use exponential expression to find c 2 Calculate z following the formulas below z X y lf cz a b z Xx c y lllifc a b 3 Calculate C C c x 102 lt Division FA B C T Find c from the rotary bezel scale 1zcc 1O 2 Calculate z following the formulas below z x ylfazb z x y lllfa b 3 Calculate C C cx 107 METHOD OF CONVERSION For pilots the conversion of distance fuel quantity weight and various other quantities used in navigational computation from one system of units to another is important This rotary slide rule is equipped with convenient conversion scales to facilitate this job Typical examples of conversions lt Distance conversion gt Nautical miles NAUT Statute miles STAT Kilometers KM lt Fuel volume conversion gt US gallons US GAL Imperial gallons IMP GAL Liters LITER Weight conversion Pound LBS eKilograms KG Fuel volume to weight conversion Fuel pounds FUEL LBS US gallons US GAL amp Imperial gallons IMP GAL Oil pound OIL LBS US gallons
18. the rotary bezel to 16 4 on the fixed scale Find the value on the fixed scale corresponding to the US GAL index of the rotary bezel The reading is 21 8 Find the value on the fixed scale corresponding to the IMP GAL index of the rotary bezel The reading is of the rotary bezel The reading is 18 2 18 2 Answer Answer 2 18 US gallons 2 18 US gallons 1 82 imperial gallons 1 82 imperial gallons
19. tself 9 900 9000 1 Multiplication division and the rule of three calculation Multiplication Problem 30 X 40 Solution Bring 30 on the rotary bezel with 1O on the fixed scale Read the scale on the rotary bezel corr esponding to 40 on the fixed scale Itis 12 Answer 1200 Division Problem 120 40 Solution Bring 12 on the rotary bezel in line with 40 on the fixed scale Read the rotary bezel scale corresponding to 10 on the fixed scale It is 30 Answer 3 GRuleof three calculation Problem 30 10 40 Solution Bring 30 on the rotary bezel in line with 1O on the fixed scale Read the scale on the rotary bezel corresponding to 4O on the fixed scale The reading is 12 Answer 120 COMPUTATION FOR NAVIGATION 1 Calculation of time speed and distance WTime calculation Problem Ground speed 200MPH Distance to fly 100 miles Time to fly Solution Adjust 20 on the rotary bezel to 60 on the fixed scale Read the fixed scale at a position corre sponding to 1O on the rotary bezel The reading is 30 Answer 30 minutes DISTANCE SPEED TIME All the examples here can be calculated according to the following formula xMinute is used as the time unit Problem Ground speed Distance to fly 100 miles Time to fly 30 minutes Solution Adjust 10 on the rotary bezel to 30 on the fix
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