Airplanes and aerodynamics

Question 1

What is the purpose of wing Flaps?

Answer 1

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

Question 2

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

Answer 2

increase the angle of descent without increasing the airspeed.

Question 3

what is the purpose of rudder on an airplane?

Answer 3

To control yaw.

Question 4

Which is not a primary flight control surface?

A. flaps.
B. Stablitator
C. Ailerons

Answer 4

Flaps

Question 5

The elevator controls movement around which axis?

Answer 5

Lateral

Question 6

Which statement is true concerning primary flight controls?

A. The effectiveness of each control surface increases with speed because there is more airflow over them.

B. Only when all three primary flight controls move In sequence do the airflow and pressure distribution change over and around the airfoil

C.Primary flight controls include ailerons ,rudder and trim systems.

Answer 6

A. The effectiveness of each control surface increases with speed because there is more airflow over them.

Question 7

Which of the following is true concerning flaps?

A. flaps are attached tp the leading edge of the wing and are used to increase wing lift
B.flaps allow an increase in the angle of descent without increasing airspeed.
C.Flaps are high drag devices deployed from the wings to reduce lift

Answer 7

B.flaps allow an increase in the angle of descent without increasing airspeed.

Question 8

Which is A secondary flight control?
A. Spoiler
B.Ailerons
C.Stabliatiors

Answer 8

Spoilers

Question 9

Trim systems are designed to do what?

Answer 9

They relieve the pilot of the need to maintainability constant pressure on the flight controls

Question 10

The four forces acting on an airplane in flight are

Answer 10

Lift, Weight, Thrust, and Drag

Question 11

When are the four forces in flight equilibrium?

Answer 11

During unaccelerated level flight

Question 12

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

Answer 12

Lift equals weight and thrust equals drag

Question 13

what is brenoullis principle?

Answer 13

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

Question 14

What is angle of attack?

Answer 14

The angle between the relative wind and the wing chord line

Question 15

The angle of attack at which an airplane stalls will

Answer 15

remain the same regardless of gross weight

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

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

Answer 17

stalled

Question 18

During a spin to the left, which wing is stalled?

Answer 18

Both wings are stalled

Question 19

What is ground effect?

Answer 19

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

Question 20

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

Answer 20

less than the length of the wingspans above the surface

Question 21

aircraft leaving ground effect during takeoff will

Answer 21

experience an increase in induced drag and a decrease in performance

Question 22

becoming airborne before reaching recommenced takeoff speed is due to

Answer 22

Ground effect

Question 23

what force makes an airplane turn?

Answer 23

The horizontal component of lift

Question 24

What determines the longitudinal stability of an airplane?

Answer 24

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

Question 25

An airplane said to be inherently stable will

Answer 25

require less effort to control

Question 26

changes in the center pressure of a wing affect the aircrafts

Answer 26

Aerodynamic balance and controllability

Question 27

An airplane has been loaded in such a manner that the CG Is located aft of the aft CG limit. One under desirable flight characteristic a lot might experience with this airplane would be

Answer 27

Difficulty in recovering from a stalled position

Question 28

What cause an airplane to Pitch nose down when the power is reduced and controls are not adjusted

Answer 28

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

Question 29

what is the effect of advancing the throttle in flight

Answer 29

both aircraft groundspeed and angle of attack will increase

Question 30

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

Answer 30

less stable all speeds

Question 31

an airplane loaded with the CG rear of the aft CG limit could

Answer 31

increase the likelihood of in advent over stress

Question 32

in what flight conditions are torque effects more pronounced in a single-engine airplane

Answer 32

low speed, high power, high angle of attack

Question 33

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

Answer 33

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

Question 34

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

Answer 34

When at high angles of attack

Question 35

which basic flight maneuver increase the load factor on an airplane as compared to straight and level flight?

Answer 35

turns

Question 36

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

Answer 36

speed of the airplane

Question 37

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

Answer 37

stall at a higher speed

Question 38

Structural damage or failure is more likely to occur in smooth air at speeds above

Answer 38

VNE

Question 39

limit load factor is the ratio of

Answer 39

Maximum sustainable load to the gross weight of the plane