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M11 > 11.5 Avionic Systems > Flashcards

11.5 Avionic Systems Flashcards

1
Q

What makes up the basic T

A

Altimeter
Airspeed indicator
Artificial horizon
Heading/compass

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2
Q

What does the FDR do?

A

Store flight data from flights from last 25 hours
(Flight data recorder)

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3
Q

What are the three emergency frequency’s

A

121.5mhz
243mhz
406mhz

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4
Q

What component is used to measure the motion of the aircraft on its longitudinal axes?

A

Accelerometers

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5
Q

How many accelerometers are required on an aircraft?

A

3
One per axis

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6
Q

What the identification code for emergency

A

7700

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7
Q

What’s the identification code for hijacking

A

7500

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8
Q

What’s the identification code for radio failure

A

7600

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9
Q

What does a white band mean on an airspeed indicator?

A

Full flap operating range

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10
Q

There is two temperature indicator, SAT (static air temperature) and TAT (total air temperature) which one is higher during flight?

A

TAT is higher during flight due to ram rise.

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11
Q

What is mode S and it’s purpose ?

A

Helps ATC control increasing levels of air traffic.

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12
Q

HF are reflected by what?

A

Bounce of the Ionosphere

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13
Q

How many degrees of freedom does a vertical Gyro have?

A

3

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14
Q

To calculate the height above the ground we use what?

A

Radio altimeter

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15
Q

What assists the pilot to fly manually

A

Flight director

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16
Q

How many VHF systems are there on an aircraft?

A

2 for COMMS and 1 for ACARS

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17
Q

What antenna is installed inside the leading edge of the vertical stabilisers

A

HF antenna

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18
Q

What are the three ILS Beacons

A

Localiser
Marker beacon
Glidestop

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19
Q

Vertical airspeed is part of the Basic T. TRUE OR FALSE

A

FALSE

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20
Q

What number code on TCAS is for an emergency

A

7700

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21
Q

What is the input to the vertical speed indicator

A

Static pressure

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22
Q

What is the DME frequency

A

Same as VHF frequency

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23
Q

Yaw damper deflects in ——— direction, relative to yaw motion

A

Opposite

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24
Q

Airspeed, attitude, altitude and heading make up what?

A

Basic T

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25
Q

What’s use to connect headphone/microphone to COMMS system?

A

Audio selector panel

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26
Q

What does the Mode S transponder tell you?

A

Aircraft position
Flight track
Altitude
Identification number

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27
Q

Can TCAS detect another aircraft if that aircraft does not have TCAS( transponder)

A

No, the TCAS system will not be able to see that aircraft

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28
Q

At what height does the radio altimeter measure?

A

Below 2500ft

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29
Q

What’s does the computer system FMS (flight management system) do?

A

Reduces pilot workload and makes a safer and more economic flight

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30
Q

How many antennas does the ADF system have?

A

2
Loop and sense

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31
Q

Why does a ADF ( automatic direction finding) system have 2 antennas

A

1 Loop and 1 sense
Calculate the correct location

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32
Q

How does VOR work

A

Much like a lighthouse
A rotating beam and a flash in all directions
Then light passes through magnetic north and works out the time between all flash directions

33
Q

What’s does ILS stand for

A

Instrument landing system

34
Q

What three components does a ILS system need?

A

Localiser, glide slope, marker beacon

35
Q

What is the decision height

A

The height a pilot decides if he will land or do a go around. (The minimum heigh before landing)

36
Q

How does DME tuning work?

A

Either paired with VOR or localiser ground station automatically when select the VHF NAV frequency

37
Q

What only transmits a 4 digit identification code

A

Mode A

38
Q

What’s the audio priority

A

Cockpit
Crew
Pre recorded
Music

39
Q

How many VHF systems are there

A

3

40
Q

What does ACARS do

A

Send data and communication

41
Q

What does the auto pilot use

A

Inner and outer loop

42
Q

Auto pilot also controls

A

Auto throttle

43
Q

How can you disconnect the auto throttle

A

By two buttons

44
Q

What gyro is used to measure the roll rate

A

Roll rate gyro

45
Q

What happens when autopilot is engaged

A

Servos manage the controls

46
Q

What does the pitot tube measure

A

Measures the total pressure which is sum of static and dynamic pressure

47
Q

What is the standard static pressure at sea level

A

1013.25 hecto pascales

48
Q

What does the airspeed indicator indicate

A

The forward speed of the aircraft’s

49
Q

What is the job of the vertical speed indicator

A

Shows the pilot the rate of climb or decent in feet per minute

50
Q

What is the job of the static ports

A

A metal plate with holes that allow outside static air pressure to enter static line, so can be measured

51
Q

When would an altitude alarm system alert the pilot

A

When there is a deviation of more than 300ft from ATC clearance altitude

52
Q

How many flight hours do FDRs hold

A

25 hours

53
Q

When a force is applied to gyro axis, the reaction is shifted by 90 degrees what is this called

A

Precession

54
Q

What type of gyro would be used to indicate the aircraft’s altitude?

A

Vertical gyro

55
Q

Vertical gyros have how many degrees of freedom relative to what axis?

A

3 degrees of freedom on a vertical axis

56
Q

Depending on the amount of gimbals what are the degrees of freedom for 0,1 and 2 gimbals?

A

0 gimbal = 1 degrees of freedom
1 gimbal = 2 degrees of freedom
2 gimbal = 3 degrees of freedom

57
Q

What is the true North?

A

Reference to the geographical North Pole ( true heading)

58
Q

What is the magnetic north?

A

Reference to the magnetic North Pole

59
Q

What are the centre displays for Boeing and airbus called?

A

Boeing = EICAS - electronic centralised aircraft monitoring
Airbus = ECAM - engine indication and crew alerting

60
Q

What is EFIS (electronic flight instrument) system divided into?

A

. primary flight displays (PFD)
. Navigation displays (NDs)

61
Q

What does the navigation display?

A

Presents the situation of the aircraft

62
Q

What are the two different types of alerts to inform flight crew about abnormal situations?

A

. Local
. Central

63
Q

Explain what a local warning is

A

Controlled directly from specific system, independent of central warning system (cws)

64
Q

Give 3 types of local warnings in the cockpit

A

. Push button light
. Flags
. Display limit exceedance

65
Q

What is the purpose of a flag?

A

Inform pilot that information which is normally displayed is missing

66
Q

What does a white push button light mean?

A

System unavailable

67
Q

What is the difference from a local to central warning?

A

Pilots do not need to be permanently monitoring the local warnings on overhead panel/ indicators

68
Q

What are the two types of central warnings?

A

. Central warning displays
. Attention getters

69
Q

What does level 3/ A mean?

A

WARNING - red asap

70
Q

What is used to measure fuel temperature?

A

Thermistor

71
Q

What differs fuel temp indications in EICAS and ECAM?

A

ECAM has individual temper valve for each wing.. where as EICAS only have one tank temp indication

72
Q

How many vibration sensors are there in each wing a.

A

2

73
Q

What are the 2 types of accelerometers on engines?

A

. Electron magnetic
. Piezoelectric crystal

74
Q

What does VNE mean?

A

Speed that should never be exceeded

75
Q

What does VFE mean?

A

Max speed with flaps extended

76
Q

What does VNO mean?

A

Max speed for cruise speed

77
Q

What does VSO mean?

A

Stall speed in landing config

78
Q

What does VMO mean?

A

Max operating speed

79
Q

What does VS1 mean?

A

Stall speed in clean configuration

M11 (41 decks)

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