Aerodynamics

Question 1

(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?

Answer 1

3,960 pounds.

Question 2

What is the purpose of the rudder on an airplane?

Answer 2

To control yaw.

Question 3

If an emergency situation requires a downwind landing, pilots should expect a faster

Answer 3

groundspeed at touchdown, a longer ground roll, and the likelihood of overshooting the desired touchdown point.

Question 4

(Refer to figure 62.) In flying the rectangular course, when would the aircraft be turned less than 90°?

Answer 4

Corners 1 and 4.

Question 5

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

Answer 5

aerodynamic balance and controllability.

Question 6

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

Answer 6

speed of the airplane.

Question 7

What force makes an airplane turn?

Answer 7

The horizontal component of lift.

Question 8

QUESTION
(Refer to figure 66.) While practicing S-turns, a consistently smaller half-circle is made on one side of the road than on the other, and this turn is not completed before crossing the road or reference line. This would most likely occur in turn

Answer 8

4-5-6 because the bank is increased
too rapidly during the early part of the turn.

Question 9

Select the four flight fundamentals involved in maneuvering an aircraft.

Answer 9

Straight-and-level flight, turns, climbs, and descents.

Question 10

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

Answer 10

Both wings are stalled.

Question 11

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

Answer 11

chord line of the wing and the relative wind.

Question 12

An airplane said to be inherently stable will

Answer 12

require less effort to control.

Question 13

The angle of attack at which an airplane wing stalls will

Answer 13

remain the same regardless of gross weight.

Question 14

(Refer to Figure 2.) If an airplane weighs 2,300 pounds, what approximate weight would the airplane structure be required to support during a 60° banked turn while maintaining altitude?

Answer 14

4,600 pounds.

Question 15

What determines the longitudinal stability of an airplane?

Answer 15

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

Question 16

As altitude increases, the indicated airspeed at which a given airplane stalls
in a particular configuration will

Answer 16

remain the same regardless of altitude.

Question 17

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

Answer 17

less stable at all speeds.

Question 18

What is one purpose of wing flaps?

Answer 18

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

Question 19

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

Answer 19

During unaccelerated flight.

Question 20

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

Answer 20

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

Question 21

(Refer to Figure 1.) The acute angle A is the angle of

Answer 21

attack.

Question 22

When executing an emergency approach to land in a single-engine airplane, it is important to maintain a constant glide
speed because variations in glide speed

Answer 22

nullify all attempts at accuracy in
judgment of gliding distance and landing spot.

Question 23

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

Answer 23

Stalled.

Question 24

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

Answer 24

stall at a higher airspeed.

Question 25

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

Answer 25

difficulty in recovering from a stalled condition.

Question 26

Which statement relates to Bernoulli
s principle?

Answer 26

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

Question 27

The four forces acting on an airplane in flight are

Answer 27

lift, weight, thrust, and drag.

Question 28

The term ‘angle of attack’ is defined as
the angle

Answer 28

between the wing chord line and the relative wind.

Question 29

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

Answer 29

Turns.

Question 30

(Refer to Figure 2.) If an airplane weighs 4,500 pounds, what approximate weight would the airplane structure be required to support during a 45° banked turn while maintaining altitude?

Answer 30

6,750 pounds.

Question 31

The angle between the chord line of an airfoil and the relative wind is known the angle of

Answer 31

attack.

Question 32

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

Answer 32

Lift equals weight and thrust
equals drag.

Question 33

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

Answer 33

increase the a diese descent without increasing the airspeed