Airplanes and Aerodynamics

Question 1

What is true regarding the force of lift in steady, unaccelerated flight?

Answer 1

There is a corresponding indicated airspeed required for every angle of attack to generate sufficient lift to maintain altitude.

Question 2

Question: 11 The design maneuvering speed is

Answer 2

the maximum speed an airplane can be safely stalled.

Question 3

Lift on a wing is most properly defined as the

Answer 3

force acting perpendicular to the relative wind.

Question 4

If the same angle of attack is maintained in ground effect as when out of ground effect, lift will

Answer 4

increase, and induced drag will decrease.

Question 5

A pilot who intends to maintain level flight must coordinate the angle of attack and

Answer 5

thrust.

Question 6

Acceleration past critical Mach speed may cause compressibility issues such as

Answer 6

drag increases.

Question 7

The critical angle of attack is exceeded when

Answer 7

a stall occurs.

Question 8

If the airplane attitude remains in a new position after the elevator control is pressed forward and released, the airplane displays

Answer 8

neutral longitudinal static stability.

Question 9

If the airplane attitude initially tends to return to its original position after the elevator control is pressed forward and released, the airplane displays

Answer 9

positive static stability.

Question 10

When transitioning from straight-and-level flight to a constant airspeed climb, the angle of attack and lift

Answer 10

are momentarily increased and lift returns to a steady state during the climb.

Question 11

Transonic airflow typically occurs in airplane speed regimes between Mach

Answer 11

0.75 and 1.20.

Question 12

If the same angle of attack is maintained in ground effect as when out of ground effect, lift will

Answer 12

increase, and induced drag will decrease.

Question 13

Longitudinal stability involves the motion of the airplane controlled by its

Answer 13

elevator

Question 14

Longitudinal dynamic instability in an airplane can be identified by

Answer 14

pitch oscillations becoming progressively steeper.

Question 15

If the airplane attitude remains in a new position after the elevator control is pressed forward and released, the airplane displays

Answer 15

neutral longitudinal static stability.

Question 16

If the airplane attitude initially tends to return to its original position after the elevator control is pressed forward and released, the airplane displays

Answer 16

positive static stability.

Question 17

If an airplane is loaded to the rear of its CG range, it will tend to be unstable about its

Answer 17

lateral axis

Question 18

An airplane will stall at the same

Answer 18

angle of attack regardless of the attitude with relation to the horizon.

Question 19

If an airplane is loaded to the rear of its CG range, it will tend to be unstable about its…

Answer 19

lateral axis.

Question 20

Which is correct with respect to rate and radius of turn for an airplane flown in a coordinated turn at a constant altitude?

Answer 20

For a specific angle of bank and airspeed, the rate and radius of turn will not vary.

Question 21

To maintain a standard rate turn as the airspeed increases, the bank angle of the aircraft will need to

Answer 21

Increase. A standard rate turn, although always 3° per sec., requires higher angles of bank as airspeed increases.

Question 22

While maintaining a constant angle of bank and altitude in a coordinated turn, an increase in airspeed will

Answer 22

decrease the rate of turn resulting in no change in load factor.

Question 23

In terms of bank and airspeed, to increase the rate of turn and at the same time decrease the radius, a pilot should…

Answer 23

increase the bank and decrease airspeed.

Question 24

A rectangular wing, as compared to other wing planforms, has a tendency to stall first at the

Answer 24

wing root, with the stall progression toward the wingtip.

Question 25

The angle of attack of a wing directly controls the

Answer 25

distribution of pressures acting on the wing.

Question 26

In small airplanes, normal recovery from spins may become difficult if the

Answer 26

CG is too far rearward, and rotation is around the CG.

Question 27

The angle of attack at which a wing stalls remains constant regardless of

Answer 27

weight, dynamic pressure, bank angle, or pitch attitude.

Question 28

In a rapid recovery from a dive, the effects of load factor would cause the stall speed to

Answer 28

increase.

Question 29

In theory, if the airspeed of an airplane is doubled while in level flight, parasite drag will become

Answer 29

four times greater.

Question 30

If given a landing clearance on runway 16 and told to hold short runway 6, how can a pilot determine the available landing distance?

Answer 30

Ask the controller.

Question 31

Which statement is true regarding the opposing forces acting on an airplane in steady-state level flight?

Answer 31

These forces are equal. ie In steady-state level flight, the sum of the opposing forces is equal to zero.

Question 32

Frost covering the upper surface of an airplane wing usually will cause

Answer 32

the airplane to stall at an angle of attack that is lower than normal.

Question 33

The stalling speed of an airplane is most affected by

Answer 33

variations in airplane loading.

Question 34

A pilot who intends to maintain level flight must coordinate the angle of attack and

Answer 34

thrust.

Question 35

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

Answer 35

provide the same amount of lift at a slower airspeed.

Question 36

As airspeed decreases in level flight below that speed for maximum lift/drag ratio, total drag of an airplane

Answer 36

increases because of increased induced drag.

Question 37

Stall speed is affected by

Answer 37

weight, load factor, and power.

Question 38

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

Answer 38

provide the same amount of lift at a slower airspeed.

Question 39

The angle of attack at which a wing stalls remains constant regardless of

Answer 39

weight, dynamic pressure, bank angle, or pitch attitude.

Question 40

While maintaining a constant angle of bank and altitude in a coordinated turn, an increase in airspeed will

Answer 40

decrease the rate of turn resulting in no change in load factor.

Question 41

On a wing, the force of lift acts perpendicular to and the force of drag acts parallel to the

Answer 41

flightpath.