Aviation-Aerodynamic Principles (Ch. 3)

Front 1

The 4 forces acting on an airplane in flight are

Back 1

lift, weight, thrust, and drag

Front 2

When are the 4 forces that act on an airplane in equilibrium?

Back 2

During unaccelerated flight

Front 3

The term "angle of attack" is defined as the angle

Back 3

between the wing chord line and the relative wind

Front 4

What is the relationship of life, drag, thrust, and weight when the airplane is in straight-and-level flight?

Back 4

Lift equals weight and thrust equals drag

Front 5

One of the main functions of flaps during approach and landing is to

Back 5

increase the angle of descent without increasing airspeed

Front 6

What is one purpose of wing flaps?

Back 6

To enable the pilot to make steeper approaches to a landing without increasing the airspeed

Front 7

The angle of attack at which an airplane wing stalls will

Back 7

remain the same regardless of gross weight

Front 8

What is ground effect?

Back 8

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

Front 9

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

Back 9

less than the length of the wingspan above the surface

Front 10

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

Back 10

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

Front 11

Ground effect is most likely to result in which problem?

Back 11

Becoming airborne before reaching recommended takeoff speed

Front 12

Which statement relates to Bernoulli's principle?

Back 12

Air traveling faster over the curved upper surface of an airfoil causes lower pressure on the top surface

Front 13

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

Back 13

aerodynamic balance and controllability

Front 14

An airplane said to be inherently stable will

Back 14

require less effort to control

Front 15

What determines the longitudinal stability of an airplane?

Back 15

The location of the CG with respect to the center of lift

Front 16

What causes an airplane (except a T-Tail) to pitch nosedown when power is reduced and controls are not adjusted?

Back 16

The downwash on the elevators from the propeller slipstream is reduced and elevator effectiveness is reduced

Front 17

What is the purpose of the rudder on an airplane?

Back 17

To control yaw

Front 18

An airplane has been loaded in such a manner that the CG is located aft of the aft CG limit. One undesirable flight characteristic a pilot might experience with this airplane would be

Back 18

difficulty in recovering from a stalled condition

Front 19

Loading an airplane to the most aft CG will cause the airplane to be

Back 19

less stable at all speeds

Front 20

In what condition must an aircraft be placed in order to spin?

Back 20

Stalled

Front 21

During a spin to the left, which wing(s) is/are stalled?

Back 21

Both wings are stalled

Front 22

In what flight condition is torque effect the greatest in a single-engine airplane?

Back 22

Low airspeed, high power, high angle of attack

Front 23

The left turning tendency of an airplane caused by P-factor is the result of the

Back 23

propeller blade descending on the the right, producing more thrust than the ascending blade on the left

Front 24

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

Back 24

When at high angles of attack

Front 25

The amount of excess load that can be imposed on the wing of an airplane depends upon the

Back 25

speed of the airplane

Front 26

Which basic flight maneuver increases the load factor on an airplane as compared to straight-and-level flight?

Back 26

turns

Front 27

What force makes an airplane turn?

Back 27

The horizontal component of lift

Front 28

During an approach to a stall, an increases load factor will cause an airplane to

Back 28

stall at a higher airspeed

Front 29

The most important rule to remember in the event of a power failure after becoming airborne is to

Back 29

immediately establish the proper gliding attitude and airspeed

Front 30

What are the 4 flight fundamentals involved in maneuvering an aircraft?

Back 30

straight-and-level flight, turns, climbs, and descents