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Module 11B > Mod 11 Final > Flashcards

Mod 11 Final Flashcards

1
Q

Tuck under (mach tuck) is due to induced shock at?

A

Trailing edge

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2
Q

When flaps are raised you may have to trim the aircraft which way?

A

Nose up

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3
Q

Trailing edge flap attached to bottom of the wing?

A

split flap

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4
Q

What tab increases the effect on a control surface?

A

Balance tab

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5
Q

Spoilers effect what type of drag and lift?

A

Induced drag, aerodynamic lift decreases

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6
Q

Speed between mach 0.8 & 1.2 is?

A

transonic

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7
Q

Critical mach number can be increased by sweepback wings and?

A

Camber & thickness of the aerofoil

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8
Q

Speed of sound is changed by Air?

A

Temperature

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9
Q

A Hi-Lok is what kind of fastener?

A

Special fastener

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10
Q

What anodising is used in folded & riveted joints?

A

Chromic acid

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11
Q

Cleco clamp for 1/8’’ rivet is what colour?

A

Copper

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12
Q

Formers and frames in a monocoque aircraft carry?

A

The skin
give shape to the fuselage
Frames = hoop stress

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13
Q

Windshield heating increases?

A

Impact resistance (toughness)

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14
Q

Internal doors carry what loads?

A

Never pressure loads

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15
Q

What do you inspect on Cargo-Doors?

A

Drift pins

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16
Q

Wing bending loads are catered for by?

A

spars

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17
Q

Winglets are for?

A

fuel efficiency (reduce aerodynamic drag) -vortices

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18
Q

What is a cantilever wing?

A

Fixed at one end (self supporting)

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19
Q

Horizontal stabiliser gives what stability?

A

Longitudinal stability

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20
Q

Vertical stabiliser skin panels can be strengthened by?

A

Tieing directly onto the skin panels of the fuselage (or stringers)

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21
Q

Tail section is called?

A

Empennage

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22
Q

Aerodynamic balancing of control surface is?

A

An aerodynamic assist to move the surface

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23
Q

CofG of a control surface is where?

A

Forward of the Hinge line

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24
Q

Engine Nacelles are what?

A

outercasing & support structure of an engine

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25
Q

What structure class are engine nacelle?

A

secondary

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26
Q

Ground air supply is connected to what duct?

A

bleed air duct

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27
Q

Where is the engine bleed air the hottest?

A

HP compressor

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28
Q

No cool air from a vapour cycle cooling system, what is the problem?

A

Refrigerant level low (thermal expansion valve)

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29
Q

Speed of the Air Cycle Machine is controlled by?

A

Flow control valve

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30
Q

Bubbles in the sight glass of a vapour cycle system means?

A

Low refrigerant level

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31
Q

Air con running at full cold on a hot day, what can happen?

A

ACM Runaway/overspeed

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32
Q

Cabin altitude increases, cabin pressure will?

A

Decrease

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33
Q

Aircraft at 30,000 ft, descends to 4,000 ft, cabin pressure will?

A

Increase

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34
Q

Fluctuating cabin pressure & difficult to controlm what is the problem?

A

Uncontrolled leak

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35
Q

Pressurisation run, cabin altitude indicator will?

A

Read zero

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36
Q

Coalessor bag contaminated, air is supplied?

A

Bypass valve opens (through the bag)

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37
Q

Cabin positive relief valve opened during flight caused by?

A

Diff pressure more than 7.95 psi, 2 independant valves open at 8.5 pis +- 0.15

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38
Q

Cabin altitude warning is controlled by?

A

Cabin pressure (initiates warning at 10,000 ft) (Altitude warning system)

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39
Q

Angle of dip is?

A

Always in vertical plane, Measured downward of the horizontal

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40
Q

Rate of precession of a Gyro is?

A

2 mins, proportional to torque

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41
Q

Square law compensation instrumentation?

A

Airspeed indicator

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42
Q

EIDS display brightness is controlled by?

A

Potentiometer and light sensor

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43
Q

A ratiometer temp indicator can be checked for calibration by?

A

Decade resistance box

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44
Q

Load sharing in a parallel AC gen system, what type of loads?

A

Resistive and real

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45
Q

Aircraft Gens operation, Ground power should not?

A

Be selected

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46
Q

Ni-Cad battery, constant current charging will?

A

Keep cells in balanced condition (reduce chance of thermal runaway)

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47
Q

CSD speed regulation failure is detected by?

A

Generator under frequency and under voltage

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48
Q

IDG fault light on indicates?

A

Low oil pressure, high oil temp

49
Q

Where is the CSD disconnect gear located?

A

IDG pushbutton must be pressed to disconnect CSD from drive

50
Q

Auto activation of Emergency Generator happens when?

A

When all hydraulics fail & RAT deploys

51
Q

When full load is applied to generator the voltage will?

A

Reduce (load increases, current increases, voltage decreases)

52
Q

Dual loop system fire warning is caused by?

A

Loop A fire, Loop B fault

53
Q

Thermocouple fire sensor is triggered by?

A

Higher temp in one thermocouple compared to other thermocouples

54
Q

A false fire warning can be triggered by?

A

Ingress of moisture, faulty installation, chaffing

55
Q

Ionising smoke detectors work on what principle?

A

Can detect visible and invisible smoke, smoke increases resistance

56
Q

Continuous Fire Wire detector, when testing, current is passed?

A

Through the centre electrode

57
Q

Full range check of flight controls, they must be moved by?

A

Cockpit control column

58
Q

Fly by wire A/C, speed brakes are deployed, No.2 fails to deploy, why?

A

Computer failure

(double check)

59
Q

Fly by wire A/C, both side sticks are moved in opposite direction, what happens?

A

cancel eachother out

60
Q

Feel differential pressure switch gives a warning when?

A

no ans

61
Q

Take off warning, what flight controls activate it?

A

flaps

62
Q

Ailerons are 5^ deflected down on a fly by wire A/C on approach, whats the cause?

A

Flaps were deployed

63
Q

What activates automatic ground speed brakes?

A

Spoilers armed, Weight on Wheels, thrust reverser initiated

64
Q

Fly by wire A/C, a spoiler fails on one side,spoiler on the other side will?

A

Will not be deployed

65
Q

Hydraulic power is lost to spoiler actuator, what happens?

A

Aerodynamics will push it down to neutral position

66
Q

Tail fuel tank in a longitudinal trim system is used for?

A

Mach tuck, longitudinal stability

67
Q

Electrical fuel pumps fail, what happens to engine operation?

A

Engine keeps operating, uses gravity feed system, suction valve opens

68
Q

Fuel jettison system is fitted to what aircraft?

A

Aircraft that have a higher take-off weight then landing weight

69
Q

Biological growth in fuel tanks can be stopped by?

A

draining free water or biocide

70
Q

Baffles are fitted to fuel tanks to?

A

Reduce sloshing/surge

71
Q

Thermal switch opens in a fuel pump what happens?

A

Nothing, it is open in normal operation

72
Q

Fuel jet pump, motive force is supplied by?

A

Fuel from a pump (Venturi)

73
Q

Micro-organism growth can be stopped in a fuel tank by?

A

Draining free water or biocide

74
Q

What type of power is used for constant running Hydraulic pump?

A

3-phase power (115V AC)

75
Q

Before disconnecting a hydraulic component, the reservoir should be ?

A

depressurised

76
Q

Hydraulic case drain fluid is used for?

A

Cooling the pump & Lubrication

77
Q

Electric or air driven hydraulic pumps have an advantage over engine pumps?

A

Allows ground servicing / can receive power from more than one source

78
Q

Engine driven variable displacement hydraulic pump requires?

A

internal pressure of 400-800 psi for lubrication/cooling

79
Q

Slow operation of a hydraulic pump requires?

A

Excessive internal leakage

80
Q

An internal leak of a variable displacement hydraulic pump is caused by?

A

Pump slippage/case drain

81
Q

What happens the output of a constant displacement hydraulic pump when it regulates?

A

Returns to reservoir using ACOV (Automatic Cut Out Valve)

82
Q

60 PSI indicated with no pumps operating, whats the problem?

A

There is no problem, 60 psi is the head of pressure

83
Q

Heat damage on a pneumatic anti-iced L/E slat, caused by?

A

A leak, or failure of a temp sensing element

84
Q

Pneumatic de-icer boots are coated with a conductive material, why>

A

To discharge, dissipate static build up, bond to structure

85
Q

The jet engine intake is de-iced with what air?

A

Compressor discharge, bleed air

86
Q

Ice detectors are heated why?

A

If ice forms it will melt, & be able to detect again

87
Q

How do you clean a tyre with oil on it?

A

Gasoline, De-natured alcohol, water and detergent

88
Q

How do you collapse a strut for servicing?

A

Jack aircraft, release air pressure, compress, check fluid, extend and compress, add air

89
Q

If a wheel speed transducer fails, what system fails?

A

Anti-skid and Auto brake

90
Q

The LG shock strut extension is very high, what would cause this?

A

Too little oil, too much air

91
Q

The nose wheels are vibrating after touchdown, what’s the cause?

A

Faulty shimmy dampner

92
Q

When does the auto brake system work?

A

Selected and engines at idle. Anti-skid must be functional

93
Q

L/G down and locked but shows a red light, whats cause?

A

Out of position sensor (micro-switch)

94
Q

L/G down and locked green lights illuminate, but transit amber/red lights on, what would you check first?

A

That the doors are locked

95
Q

What precaution would you take when installing a strobe light?

A

Power off -> fingerprints cause overheat -> don’t touch ignition unit -> allow capacitor to discharge for specified time

96
Q

What lights are operated by high voltage?

A

HID, Xenon flash tubes

97
Q

Electroluminescence lights operate on what voltage?

A

proportional to voltage applied (28v DC)

98
Q

What position should the emergency light switch be placed in when removing power from aircraft?

A

Pilots are off, attendents in NORM

99
Q

Oxygen bottle pressure reads 1800 psi, but no oxygen in mask, why?

A

Kinked hose, crew oxygen is off, mask regulator broke

100
Q

Purpose of the oxygen dual pressure regulator?

A

2 masks on, one portable tank

101
Q

Signal is sent to the PA Amplifier when oxygen is deployed, why?

A

Emergency annunciation

102
Q

How do you check that a chemical oxygen generator is deployed?

A

Heat sensitive tape

103
Q

Where is the pneumatic system pre-cooler located?

A

Upstream of PRSOV and fan air valve

104
Q

Pneumatic dehydrator unit contains?

A

Activated Alumina

105
Q

Pneumatic pressure regulating valve senses pressure where for regulating?

A

Bleed upstream and downstream

106
Q

Which unit offloads the compressor to maintain the air pressure?

A

Inlet Guide Vanes, pressure regulating valve, bleed air valve

107
Q

When using a ground pneumatic cart what precaution should be observed?

A

The hose adapter and check valve, aircraft has electrical power

108
Q

What is the water pressure in the aircraft?

A

25 - 50 psi

109
Q

Water heater capacity is?

A

1.5L

110
Q

Colour of fire extinguisher in lavatory?

A

Red, Class A water

111
Q

Overheat protection of toilet motor?

A

Automatic resetting thermal switch

112
Q

Centralised maintenance system (CMS) components?

A

Centralised maintenance computer and printer

113
Q

Bite in a system computer has what function on ground?

A

Interactive mode

114
Q

What function is performed in a computer when power is applied?

A

Safety test, power up, BITE test

115
Q

Wht is ARINC 664?

A

Full duplex switched ethernet

116
Q

Spefication of an avionic databus that uses Ethernet?

A

ARINC 664/ AFDX standard IE 802.3

117
Q

Which IMA bus requires no computer to communicate between components?

A

ARINC 664

118
Q

Controller Area Network (CAN) bus max data rate>

A

1 mb/sec or 1000 kb/sec

119
Q

In flight the service interphone in the cabin can be used when?

A

For emergency

Module 11B (42 decks)

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