Primary Flight Controls 05

Question 1

One of the advantages of fly-by-wire control is
Select one:

1.Reduction of the electric and hydraulic power required to operate the control surfaces

2.Immunity to different interfering signals

3.Lesser sensitivity to lightning strike

4.Direct and indirect weight saving through a simplification of systems

Answer 1

4. Direct and indirect weight saving through a simplification of systems

Question 2

The rudder ratio changer is fitted to […………..] rudder deflection with an increase in forward speed

Answer 2

Reduce

Question 3

Regarding Airbus Fly by Wire philosophy, in the event of an extreme system failure, the ‘Law-mode’ the Aircraft will revert to is known as:

Answer 3

Mechanical Law

Question 4

The advantages of fly-by-wire control are;

Select one or more:

a.direct and indirect weight saving through simplification of systems

b.lesser sensitivity to lightning strike

c.improvement of piloting quality throughout the flight envelope

d.reduction of the electric and hydraulic power required to operate the control surfaces

e.immunity to different interfering signals

Answer 4

a. direct and indirect weight saving through simplification of systems

c. improvement of piloting quality throughout the flight envelope

Question 5

An aircraft may need to be trimmed in pitch as a result of;

Select one:

a.increase in speed, increase in power, varying CG position

b.changes of speed, changes of power, asymmetric power

c.varying CG position, changes of speed, changes of power

d.movement of passengers, decrease in speed, increase in power

Answer 5

c. varying CG position, changes of speed, changes of power

Question 6

The purpose of the primary stops in a control system is;

Select one:

a.to set the range of movement of the control surface

b.to set the control surface neutral position

c.to adjust the neutral position of the control column

d.to limit control movement to one direction only

Answer 6

a. to set the range of movement of the control surface

Question 7

A hydraulic Q Feel system;

Select one:

a.connects the control column and control surface

b.creates a hydraulic load on the control column proportional to pitot pressure

c.creates a hydraulic load on the control column proportional to dynamic pressure

d.is used instead of a spring feel unit

Answer 7

c. creates a hydraulic load on the control column proportional to dynamic pressure

Question 8

On a large swept-wing passenger transport aircraft primary flight controls are typically:

Select one:

a.Ailerons, Elevator, Rudder and Roll Spoilers.

b. Speedbrake, rudder-pedals, control-wheel or stick.

c. Control-wheel or stick, rudder-pedals and speedbrake.

d. Rudder, elevator and ailerons.

Answer 8

a. Ailerons, Elevator, Rudder and Roll Spoilers.

Question 9

The main advantages of a variable incidence tailplane are;

1. reduced pilot effort required
2. less drag in the trimmed state
3. trimming does not reduce range of pitch control
4. simpler construction

Select one or more:

a.3
b.1
c.4
d.2

Answer 9

2 and 3

Question 10

Transport category aeroplanes with mechanical control linkages are provided with protection against control jamming. This ensures that

Select one:

a.in case of seizure, engine control is taken over automatically by an alternate electrical circuit

b.the aeroplane is protected against the adverse effects of strong electromagnetic radiation

c.the flight control system has provisions to disconnect the part of the control system that becomes blocked

d.seized brakes can be released from the cockpit

Answer 10

c. the flight control system has provisions to disconnect the part of the control system that becomes blocked

Question 11

Define a primary flight control
Select one:

a. A control that is used primarily to trim the aircraft

b. Control surface that are design to increase lift

c. Any control that causes the aircraft to move about its three axes

d. A control that improves stability

Answer 11

c. Any control that causes the aircraft to move about its three axes