5 questions would be shown from a total of 30 free practice questions to prepare you for the cadet pilot interview. Enjoy!
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1. For Mach numbers greater than _______, the frictional heating of the airframe by the air becomes high enough that light weight aluminum can not be used for an aircraft structure.
At Mach numbers greater than 2.5, aluminum is no longer an option. The SR-71 was made largely of titanium, which has good high temperature characteristics, but is still light enough for aircraft structures. To allow for the expansion, slip joints are used in many places on the SR-71. On the ground, the SR-71 fuel tanks leak, and they do not seal until the aircraft heats up during flight.
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2. Lowering flaps increases _____.
Lowering flaps increases camber, lift and drag.
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3. The speed of sound in the troposphere ________ with altitude, mostly due to __________.
The speed of sound in the troposphere decreases with altitude, mostly due to a decrease in temperature. Humidity has very little effect on the speed of sound, nor does air pressure by itself.
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4. Why does avgas have lead in it?
It’s still used because it prevents engine knocking, also known as detonation.
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5. Vso is the _________.
Vso is the published stalling speed in a landing configuration at maximum gross weight.
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The average score is 45%
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