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~ ATPL/ Instruments > AUTOMATIC FLIGHT & CONTROL SYSTEMS > Flashcards

AUTOMATIC FLIGHT & CONTROL SYSTEMS Flashcards

1
Q
  1. A single axis autopilot system:
A

d. Provides control about the roll axis

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2
Q
  1. A single axis autopilot may also be called:
A

b. Wing leveller

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3
Q
  1. An auto pilot:
A

c. is an auto stabilisation system

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4
Q
  1. The fundamental components of an autopilot control loop are:
A

a. Rate gyro, servomotor, error signal generator

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5
Q
  1. A device in a closed loop control system in which a small power input controls a much larger power output in a strictly proportionate manner is:
A

b. A servomechanism

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6
Q
  1. An automatic flight control system:
A

a. Is another name for an autopilot system

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7
Q
  1. An aircraft has yaw damping included in its auto stabilisation system. An essential requirement of such a system is:
A

a. A three axis autopilot system

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8
Q
  1. Automatic flight systems may be capable of controlling the aircraft flight in:
A

a. Azimuth, elevation and velocity

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9
Q
  1. An automatic flight control system is fitted with control wheel steering (CWS)
A

b. Manoeuvring commands may be input by applying normal forces to the control yoke
without first disengaging the autopilot

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10
Q
  1. During an approach to an autoland at 1500 feet:
A

b. Localiser is controlling the roll channel, off line channels are automatically engaged
and flare mode is armed

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11
Q
  1. What type of autoland system would be required for the landing to continue following a single failure below alert height:
A

c. Fail operational or fail active

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12
Q
  1. Inputs to the rudder channels initially originate from:
A

c. Compass gyro and turn and slip gyro

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13
Q
  1. An automatic flight system which can safely continue with an automatic landing after a system failure is a:
A

d. Fail operational system

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14
Q
  1. Altitude Select and Altitude Hold are examples of:
A

b. manometric functions from the ADC

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15
Q
  1. During an autoland the caption LAND 2 is illuminated. The system is:
A

b. Fail passive

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16
Q
  1. For an autoland system to meet FAIL PASSIVE criteria it must:
A

b. Withstand a system failure without excessive deviations from flight path

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17
Q
  1. During an autoland at 50 ft AGL (45’ GA) the pitch control of the autopilot is …………. and the roll control is ………………..
A

d. flare, localiser

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18
Q
  1. During an autoland approach:
A

c. flare is disengaged prior to touchdown at 5’GA

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19
Q
  1. In an autoland at 1000’ AGL with two autopilots engaged:
A

d. The engaged roll mode would be LOCALISER.

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20
Q
  1. An automatic flight control system in which the application of normal forces on the control column allows the pilot to input demands to the autopilot is a:
A

a. control wheel steering

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21
Q
  1. If a fault develops in a Triplex auto-pilot system during an approach, the system will revert to:
A

a. fail passive and the landing may continue.

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22
Q
  1. Central Air Data Computers (CADC’s) transmit data concerning;-
A

b. airspeed, altitude and Mach Number.

23
Q
  1. Inner loop stability is obtained by;-
A

c. ‘I’ bar displacement.

24
Q
  1. The auto-throttle is used to control some factors during the three primary control modes, they are:
A

a. EPR, Mach and Speed.

25
Q

The mode that enables the pilot to manoeuvre his aircraft in pitch and roll by use of the automatic control system is called the;-

A

a. control wheel steering (CWS )mode that allows the pilot to control the aircraft, and when the wheel is released, the aircraft holds the newly established attitude.

26
Q

Touch control steering:

A

c. allows the pilot to control the aircraft with the servomotors disengaged.

27
Q

A system which can still function without degradation of performance after a failure has:

A

c. fail operational ability.

28
Q

During a CAT 2 ILS automatic approach, the source for altitude information is the:

A

c. radio altimeter which becomes effective below about 2,500 feet.

29
Q
  1. Heading hold mode relates to control in:
A

c. the roll channel via the outer loop control source.

30
Q
  1. The system which allows the pilot to control the aircraft with the servomotors engaged is called:
A

b. control wheel steering.

31
Q
  1. The type of automatic landing system which would necessitate a manual landing after a system failure during an automatic approach is:
A

a. fail passive.

32
Q
  1. After a failure of one of the necessary redundant systems below alert height you would:
A

d. continue descent and land automatically.

33
Q
  1. When localiser and glide slope are captured at 1,500 feet during an automatic landing sequence, two other functions will be activated at the same time, they are;-
A

d. flare mode arm and off line channels engaged.

34
Q
  1. A fundamental requirement of a closed loop servo-mechanism is;-
A

d. feedback.

35
Q
  1. ALT HOLD is an example of:
A

b. Outer loop input to the pitch channel

36
Q

A rate gyro:

A

c. Supplies rate and displacement information to the computer

37
Q

To prevent servo motor runaway from producing excessive demands to the control surface:

A

b. A torque limiter is fitted

38
Q

Autotrim is functional:

A

b. In the pitch channel only with the autopilot engaged

39
Q

L.NAV is an…………. input to the …………..channel using data from the………..

A

c. outer loop, roll, FMC

40
Q

In an aircraft which requires a mach trim system it will apply inputs to the horizontal stabilizer:

A

d. At high subsonic speeds with the autopilot engaged or not.

41
Q
  1. With the Autopilot engaged in the Alt mode the Captain alters the barometric setting. The aircraft:
A

a. maintains its altitude

42
Q
  1. Control wheel steering enables a pilot to:
A

b. manoeuvre the aircraft in the air while the autopilot is engaged

43
Q
  1. Autopilot synchronisation in an aircraft:
A

b. ensures that, when the autopilot is engaged, the take-over is effected smoothly and
without snatching on the control system

44
Q
  1. The rules for the use of Autotrim are that it:
A

d. operates only in conjunction with the autopilot.

45
Q

Consider the following statements regarding flight envelope protection:
A High speed protection prevents the airspeed from exceeding Vmo/Mmo
B High angle of attack protection comes in when the aircraft reaches the stalling AoA

A

d. Neither statement is correct.

46
Q

The control laws for an autopilot are known as:

A

d. normal, alternate and direct laws.

47
Q

An autoland system that, in the event of an autopilot failure, continues to function without degradation of performance beyond the limits required automatic, would be one with the status:

A

c. fail operational

48
Q

The Autoland. sequence is considered to be complete when:

A

b. the autopilot is manually disengaged by the pilot

49
Q

The Autothrottle will come on automatically even with the A/T switch OFF when:

A

a. in a FBW aircraft the AoA reaches a critical value called floor

50
Q

An aircraft on Autopilot is engaged in the VOR mode and loses the VOR signals as it flies through the VOR cone of silence. The autopilot:

A

d. decouples from the VOR and flies the last heading for a fixed period.

51
Q
  1. For an aircraft with a non-synchronised autopilot system, ‘snatching’ of the controls by the autopilot when engaging or disengaging can be prevented by:
A

a. the pilot ensuring that the aircraft is trimmed out before selecting or disengaging the autopilot

52
Q
  1. With the autopilot in CWS the pilot manoeuvres the aircraft and releases control. The aircraft will maintain:
A

d. attitude at the time of release.

53
Q
  1. Autopilot corrections affecting Pitch are carried out by:
A

b. autotrim and elevators

54
Q
  1. For a commercial aircraft operating with a single pilot in IFR the minimum requirement is that the autopilot should have control in:
A

c. Altitude Hold and Heading mode

~ ATPL/ Instruments (31 decks)

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