Citizen AD2992-59P - 4-3. How to use the aviation function; Calculation of time needed to travel a set distance; Calculation of flight distance

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How to use the aviation function4-3.
[Calculation of time needed to travel a set distance]
Q : If the speed of an aircraft is 180 knots, how much time does it take the aircraft to y
450 nautical miles?
A : Align 18 of the outer scale with the SPEED INDEX “” of the inner scale.
Result: 2 hours and 30 minutes - 2:30 of the inner scale corresponds to 45 of the
outer scale.
[Calculation of flight distance]
Q : If the speed is 210 knots and the ight time is 40 minutes, how many nautical
miles will an aircraft travel?
A : Align 21 of the outer scale with the SPEED INDEX “” of the inner scale.
Result: 140 Nautical Miles – 14 on the outer scale corresponds to 40 of the inner
scale.