POF Q17 - Control Part 1

Question 1

Which statement is correct?
Select one:

a.Spoilers reduce your stall speed

b.Spoilers decrease CLMAX

c. spoilers reduce decent rate

d.Spoilers increase alpha crit

Answer 1

b.Spoilers decrease CLMAX

Question 2

What effect do spoilers have on CL Max?
Select one:

a.CL is dependant on wing surface area

b.Increase CL max

c.Reduce CL max

d.CL max remains constant

Answer 2

c.Reduce CL max

Question 3

Upon extension of a spoiler on a wing:
Select one:

a.CD is increased and CL is decreased

b.both CL and CD are increased

c.CD is increased, while CL remains unaffected

d.only CL is decreased (CD remains unaffected)

Answer 3

a.CD is increased and CL is decreased

Question 4

What are three of the essential requirements that any flight control system must satisfy?

a.Hydraulics, Gravity, Pneumatics

b.Force, Feel, Response

c.Lift, Drag, Camber

d.Pitch, Roll, Yaw

Answer 4

b.Force, Feel, Response

Question 5

What is the working principle of an internal balance?

a.obstruction of the air flow

b.a spring which will have different effect at how or low speed

c.a motor operated trim switch

d.The change in local static pressure above and below the control surface

Answer 5

d.The change in local static pressure above and below the control surface

Question 6

In a banked turn to the left, what positions are the ailerons in?

a.Left wing down, Right aileron deflected up, left aileron deflected down

b.Left wing down, Right aileron deflected up, left aileron deflected down

c.Right wing down, Left aileron deflected up, right aileron deflected down

d.Left wing down, Left aileron deflected up, right aileron deflected down

Answer 6

d.Left wing down, Left aileron deflected up, right aileron deflected down

Question 7

During a pitch-up manoeuvre, in which direction do the elevator and the anti-balance tab move?

a.The elevator moves upwards, the anti-balance tab moves downwards

b.The elevator moves downwards, the anti-balance tab moves downwards

c.The elevator moves downwards, the anti-balance tab moves upwards

d.The elevator moves upwards, the anti-balance tab moves upwards

Answer 7

d.The elevator moves upwards, the anti-balance tab moves upwards

Question 8

What is the main purpose of mass balancing? and where would you find the mass?

a.To stop the control surface oscillating. Behind the hinge line

b.To reinforce an oscillatory movement of the control surface. Behind the hinge line

c.To stop the control surface oscillating. In front of the hinge line

d.To reinforce an oscillatory movement of the control surface. In front of the hinge line

Answer 8

c.To stop the control surface oscillating. In front of the hinge line

Question 9

What type of controls does the below statement describe?
Controls that provide some, but not all, the force required to operate the control surface. Some natural feel is felt through the controls by the pilot.

a.Fully-powered controls

b.mechanical controls

c.Power-assisted controls

d.Q-feel controls

Answer 9

c.Power-assisted controls

Question 10

What type of controls does the below statement describe?
Controls are provided with the forces required to move the control surfaces. No aerodynamic feel is felt by the pilot.

a.Q-feel controls

b.Power-assisted controls

c.mechanical controls

d.Fully-powered controls

Answer 10

d.Fully-powered controls

Question 11

An artificial feel (Q-feel) system must be provided for power-assisted controls.

Select one:
True
False

Answer 11

False

Question 12

A stabilator is a combination of which 2 control surfaces?

a.Elevator and aileron

b.Stabiliser and rudder

c.Elevator and Stabiliser

d.Aileron and Flap

Answer 12

c.Elevator and Stabiliser

Question 13

The most significant effects of downwash are felt when an aircraft has…

a… a low wing and high tail

b… a high wing and high tail

c… a high wing and low tail

d… a low wing and low tail

Answer 13

c… a high wing and low tail

Question 14

During a turn to the right, the effect of adverse aileron yaw can be felt by

a.yaw to the left

b.pitch up moment

c.yaw to the right

d.pitch down moment

Answer 14

a.yaw to the left

Question 15

Large aircraft tend to have 2 sets of ailerons, inboard and outboard. When are the different types of ailerons used in flight?

a.At low speeds both sets of ailerons are used, at high speeds only the outboard ailerons are used.

b.Both sets of ailerons are used across all speed ranges

c.At low speeds, only the outboard ailerons are used. At high speeds, only the inboard ailerons are used.

d.At low speeds both sets of ailerons are used. At high speeds only the inboard ailerons are used

Answer 15

d.At low speeds both sets of ailerons are used. At high speeds only the inboard ailerons are used