Aero(4Forces), PPL

Question 1

The four forces acting on an airplane in flight are

Answer 1

Lift, Weight, Thrust, Drag

Question 2

When are the four forces that act on an airplane in equilibrium?

Answer 2

During unaccelerated flight

Question 3

The term AOA is defined as the angle

Answer 3

btw the wing chord line and the relative wind

Question 4

Wht is the relationsgip of lift, drag, thrust, and weight when the airplane is in straight-and-level flight?

Answer 4

Lift equals weight and thrust equals drag

Question 5

One of the main functions of flaps during approacg and l/d is to

Answer 5

increase the angle of descent w/o increasing the a/s

Question 6

Wht is one purpose of wing flaps?

Answer 6

To ebable the pilot to make steeper approaches to a l/d w/o increasing the a/s

Question 7

The AOA at whichan airplane wing stalls will

Answer 7

remain the same regardless of gross weight

Question 8

Wht is ground effect

Answer 8

The result of the interference of the surface of the Earth with the airflow patterns abt an airplane

Question 9

Floating caused by the phenomenon of ground effect will be most realized during an approach to land when at

Answer 9

less than the length of the wingspan above the surface

Question 10

Wht must a pilot be aware of as a result of ground effect?

Answer 10

Induced drag decrease; therefore, any excess speed at the point of flare may cause considerable floating.

Question 11

Ground effect is most likely to result in which problem?

Answer 11

Becoming airborne before reaching reconnended t/o spd.