Mini test #1 – answers

Of course all of you didn’t have any problems answering correctly the test’s questions. Yet I’ll put some answers here:

1. What is the relationship of lift, drag, thrust, and weight when the airplane is in straight-and-level flight?
A) Lift equals weight and thrust equals drag.
Don’t be fouled by some of those pictures when all forces are equal – it’s just misleading representation. Only opposing forces has to equal to make plane flight straight and level. So even if thrust and drag are 5 times greater than lift and weight – if they are even it will result in straight and level flight.

2. During a spin to the left, which wing(s) is/are stalled?
A) Both wings are stalled.
Although it usually requires uncoordinated flight state to start the spin and in such one wing has greater angle of attack then the other, in fully developed spin both wings are stalled causing autorotation.

3. When activated, an emergency locator transmitter (ELT) transmits on
B) 121.5 and 243.0 MHz.