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Aerospace 5 lvl > vol 4 > Flashcards

vol 4 Flashcards

1
Q

normal and mech gov positions

A

propeller governor control switches

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2
Q

selects the desired master propeller

A

synchrophase master switch

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3
Q

used during propeller indexing procedures

A

prop resynchrophase switch

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4
Q

resets the propeller governor to 106 percent rpm in alpha range

A

fuel governing switches

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5
Q

when reference circuit is opened, normal governing and sychrophasing modes are not allowed

A

synchrophaser disarming switches

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6
Q

reflects the actual throttle lever setting

A

throttle anticipation potentiometer

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7
Q

reflects actual engine rpm

A

tachometer generators

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8
Q

for every revolution of the propeller, a voltage pulse is produced

A

pulse generator

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9
Q

disconnects the drive gear from the lever

A

clutch

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10
Q

locks the position of the lever

A

brake

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11
Q

reference and control windings cause it to rotate

A

speed bias motor

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12
Q

recenters the motor when there are no error signals

A

feedback potentiometer

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13
Q

transmit and receives signals from several components for propeller governing

A

synchrophaser unit

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14
Q

contains a master and a slave channel

A

master synchrophaser board

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15
Q

contains slave channels for the #1 and #4 propellers

A

double slave board

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16
Q

receives, compares, and modifies input signals

A

power amplifier board

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17
Q

furnishes the necessary power for components and relays within the sychrophaser unit

A

power supply board

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18
Q

its signal drives the speed bias to correct for a 2% speed change

A

compensating network

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19
Q

what are the 3 propeller governing modes of operation?

A

mechanical, normal, synchrophasing

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20
Q

what two functions does normal governing mode add to supplement mechanical governing?

A

throttle anticipation and engine speed stabilization

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21
Q

what is the only major moving part in the SGT engine?

A

rotor assembly

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22
Q

which propeller subassembly transfers hydraulic fluid to the inboard and outboard sides of the dome positions?

A

pitchlock regulator

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23
Q

what are the primary components that lock the propeller dome position and blades in a fixed position?

A

pitchlock regulator, stationary pitchlock ratchet, and rotating pitchlock ratchet

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24
Q

name the 3 main systems that supply hydraulic pressure to the propeller

A

main, stand-by, and auxiliary

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25
Q

when the backup valve is opened and pressure is routed to the governor pilot valve, the pressure is used to accomplish what 3 propeller operations?

A

unfeather, reverse, and release the low pitch stop

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26
Q

what 2 ways can the propeller be feathered?

A

moving the condition lever to the FTR position or by pulling the fire emergency handle

27
Q

the condition lever provides what type of signals to the control assembly?

A

electrical and mechanical

28
Q

when the condition lever is moved to FTR and the alpha shaft rotates, which cam acts through a mechanical linkage and opens the feather actuating valve?

A

manual feather cam

29
Q

which valve acts as a backup in case the mechanical linkage fails to open the feather actuating valve?

A

feather solenoid valve

30
Q

what two cams control the unfeathering operation?

A

manual feather cam and the beta set cam

31
Q

on a constant speed propeller, if propeller speed decreases, what happens to the blade angle?

A

decreases

32
Q

to prevent an overspeed during constant speed operation, what does the propeller governor do in order to keep rpm constant?

A

increase blade angle

33
Q

in beta range what moves the pilot valve?

A

cams and mechanical linkage

34
Q

if the throttle were moved from RVS to GND IDLE, which cam moves the governor pilot valve to increase pitch?

A

beta set cam

35
Q

what drives the governor flyweights?

A

propeller rotation throughout gears on the differential gear train

36
Q

during an OVERSPEED condition, what part of the propeller governor moves the pilot valve?

A

flyweights

37
Q

during an UNDERSPEED condition, what part of the propeller governor moves the pilot valve?

A

speeder spring

38
Q

routes main pump pressure to hydraulically position the feather and pilot valves

A

feather solenoid valve

39
Q

can be pinned at 5 degree increments

A

beta shaft rigging cam

40
Q

when closed, it prevents the pressure cutout switch from stopping the auxiliary pump motor

A

pressure cutout backup switch

41
Q

contains the beta set cam and alpha shaft rigging cam

A

alpha shaft

42
Q

primary component for controlling the flow of hydraulic fluid to and from the dome assembly

A

propeller governor assembly

43
Q

is mechanically actuated by the same lever that mechanically positions the feather valve

A

feathering actuating valve

44
Q

contains the pressure cutout backup switch cam and beta backup valve cam

A

beta shaft

45
Q

maintains an initial supply pressure(to the pilot valve) of 100 psi over- pressurized sump pressure by porting excess fluid back into the sump

A

low- pressure relief valve

46
Q

combines the main, standby, and auxiliary pressure pumps’ output to increase pitch lines during propeller feathering

A

feather valve

47
Q

in the beta range, the speeder spring tension is increased to between 109 and 113% rpm at the same time as mechanical linkage moves into position to control the __________.

A

pilot valve

48
Q

allows either a decrease or increase in pitch pressure (whichever is higher) to be ported to the low pressure relief valve without allowing cross flow

A

selector valve

49
Q

cancels blade movement at the proper blade angle

A

beta follow up cam

50
Q

changes speeder spring tension when the throttle is moved into the alpha or beta range

A

speed set cam

51
Q

indicates when the propeller is in the beta range

A

beta indicator cam

52
Q

transmits throttle lever movement to the feather valve linkage

A

input control lever assembly

53
Q

protractor cam

A

beta backup valve cam

54
Q

transfers NTS plunger movement to the feather valve linkage

A

NTS control lever

55
Q

schedules a desired blade angle in the beta range

A

beta set cam

56
Q

mechanically feathers the propeller

A

manual feather cam

57
Q

relieves built up air pressure to prevent seals from leaking

A

cover breather

58
Q

limits system pressure to 1,300 psi above pressurized sump pressure

A

high pressure relief valve

59
Q

reflects actual propeller rpm

A

flyweights

60
Q

in the alpha range, the tension is set so the pilot valve will be in the neutral or on-speed position at 100% rpm

A

speeder spring

61
Q

when closed, decreased-pitch pressure will not be allowed to the selector valve and subsequently to the low pressure relief valve

A

backup valve

62
Q

contains the various cams, valve, and switches that control the flow of hydraulic fluid to and from the dome assembly

A

valve housing

63
Q

illuminates the NTS indicator light when closed

A

NTS switch

Aerospace 5 lvl (1 decks)

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