Private Pilot FAA Knowledge Test SU 1: Airplanes and Aerodynamics questions with correct answers

What is one purpose of wing flaps? CORRECT ANSWER To enable the pilot to make steeper approaches to a landing without increasing the airspeed. DISCUSSION: Extending the flaps increases the wing camber and the angle of attack of the wing. This increases wing lift and induced drag, which enables the pilot to make steeper approaches to a landing without an increase in airspeed. One of the main functions of flaps during approach and landing is to CORRECT ANSWER increase the angle of descent without increasing the airspeed. DISCUSSION: Extending the flaps increases the wing camber and the angle of attack of the wing. This increases wing lift and induced drag, which enables the pilot to make steeper approaches to a landing without an increase in airspeed. What is the purpose of the rudder on an airplane? CORRECT ANSWER To control yaw. DISCUSSION: The rudder is used to control yaw, which is rotation about the airplane's vertical axis. Which is NOT a primary flight control surface? CORRECT ANSWER Flaps.