Private pilot FAA Knowledge — Aerodynamics

What determines the longitudinal stability of an airplane?

• A. The location of the CG with respect to the center of lift.

• B. The effectiveness of the horizontal stabilizer, rudder, and rudder trim tab.

• C. The relationship of thrust and lift to weight and drag.

What does the red line on an airspeed indicator represent?

• A. Maneuvering speed.

• B. Turbulent or rough-air speed.

• C. Never-exceed speed.

(Refer to Figure 4.) Which marking identifies the never-exceed speed?

• A. Upper limit of the green arc.

• B. Upper limit of the white arc.

• C. The red radial line.

Upon encountering severe turbulence, which flight condition should the pilot attempt to maintain?

• A. Constant altitude and airspeed.

• B. Constant angle of attack.

• C. Level flight attitude.

Changes in the center of pressure of a wing affect the aircraft's

• A. lift/drag ratio.

• B. lifting capacity.

• C. aerodynamic balance and controllability.

When does P-factor cause the airplane to yaw to the left?

• A. When at low angles of attack.

• B. When at high angles of attack.

• C. When at high airspeeds.

Which V-speed represents maximum flap extended speed?

• A. VFE.

• B. VLOF.

• C. VFC.

(Refer to Figure 4.) The maximum speed at which the airplane can be operated in smooth air is

• A. 100 KTS.

• B. 165 KTS.

• C. 208 KTS.

The greatest vortex strength occurs when the generating aircraft is

• A. light, dirty, and fast.

• B. heavy, dirty, and fast.

• C. heavy, clean, and slow.

(Refer to Figure 2.) If an airplane weighs 3,300 pounds, what approximate weight would the airplane structure be required to support during a 30° banked turn while maintaining altitude?

• A. 1,200 pounds.

• B. 3,100 pounds.

• C. 3,960 pounds.