(3) Flight Distance
Example: Obtain the air distance when the air speed is 180
knots and the flight time is 40 minutes.
Operation: Align "18" on the outer scale with the SPEED INDEX
on the inner scale. Then "40" on the inner scale corresponds to
"12" on the outer scale. Thus, the air distance of the flight is 120
nautical miles.
(4) Rate of Fuel Consumption
Example: Obtain the rate of fuel consumption (gallons/hour)
when the flight time is 30 minutes and the fuel consumption is
130 gallons.
Operation: Align "13" on the outer scale with "30" on the inner
scale. Then the SPEED INDEX on the inner scale corresponds
to "26" on the outer scale. Thus, the fuel consumption is 260
gallons an hour.
(2) Knots (Air Speed)
Example: Obtain the knots (air speed for 240 nautical miles with
a flight time of 1 hour and 20 minutes.
Operation: Align "24" on the outer scale with "80" on the inner
scale (time scale). Then, the SPEED INDEX on the inner scale
corresponds to "18" on the outer scale. Thus, the air speed for
the flight is 180 knots.
10
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