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AT 354 > Powerplant > Flashcards

Powerplant Flashcards

1
Q

Engine

A

TFE 731-50R twin spool turbofan

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2
Q

how many igniter plugs and fuel nozzles

A

2, 12

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3
Q

how much oil

A

1.65 gallons

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4
Q

what is the ignition powered by

A

PE bus

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5
Q

what do the DEECS run on

A

28vDC from PE bus
(Two of them)

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6
Q

engine shut down if N1 exceeds ____ or N2 exceeds _____

A

107% , 107.7%

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7
Q

Engine Sync

A

compares N1 or N2 of master engine (left) to right

authority range is +/- 2.5% N2 at midrange positions

inop with APR armed

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8
Q

what uncommanded slit will trigger APR

A

15% of N2

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9
Q

what type of thrust reversers

A

TR5050 bucket type

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10
Q

how are thrust reversers controlled

A

electrically through the PE bus

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11
Q

thrust reverser ion ground annunciator

A

rudder bias not inhibited

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12
Q

thrust reverser in flight indication

A

unlocked

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13
Q

N2 can spin at ____ RPM

A

30,000

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14
Q

TFE 731 spool up time

A

7 seconds

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15
Q

difference between stator and compressor

A

stators are stationary,
compressors spin

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16
Q

what’s on the accessory drive

A

Oil pump
Fuel pump (high pressure)
Starter generator
Alternator
Fuel control unit
Hydraulic pump

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17
Q

Where does the dEEC get info from

A

Engine inlet pressure
Engine inlet temperature
Interstage turbine temp
N2 and N1 speeds
Power lever angle

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18
Q

what do the DEEC inputs allow it to do

A

schedule, govern, and limit engine

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19
Q

what do the hp cocks do

A

when closed, mechanically lock thrust levers in full idle position

red fire warning light to indicate fire when in ON position

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20
Q

max thrust operating limit

A

5 minutes

21
Q

APR Automatic Power Reserve automode may activate when

A

Automode - APR activates when an uncommanded split in N2 occurs of 15% or more

22
Q

what do we operate the ignition in

A

AUTO

23
Q

uncommanded ____ RPM drop will cause _____ to activate

A

500 rpm drop in N2 will reactivate ignition

24
Q

What measures the interstage turbine temperature

A

10 thermocouples between the high pressure turbine and first stage of the low pressure turbine

25
Q

What oil pressure will cause the OIL 1 LO PRESS to illuminate

A

49 psi

26
Q

where does the ignition system get power from

A

PE bus bar

27
Q

The DEEC uses N1 or N2 for the control parameter

A

N1

28
Q

can reverse thrust be used to taxi backwards

A

no

29
Q

can reverse thrust be used in the air

A

no

30
Q

can the engine be started with reverse thrusters deployed

A

no

31
Q

when is thrust in excess of reverse idle above 50 KIAS allowed

A

prohibited unless emergency

32
Q

is reverse thrust on unpaved surfaces allowed

A

no

33
Q

the power plant classification on the Hawker 900xp

A

two-spool turbofan

34
Q

When the aircraft is static on a standard day at sea level, each engine develops

A

4660 lbs of thrust

35
Q

primary overspeed rpm-limiting device on the 731 series engine

A

mechanical governor in the FCU

36
Q

Max HP rotor N2 overspeed is

A

102.5% for 10 seconds

37
Q

max oil pressure for power at or above idle rpm

A

80 psi

38
Q

max inter turbine temperature for engine starting

A

994C

39
Q

max transient oil pressure permissible

A

100 psi

40
Q

if the MWS reverser annunciator illuminates during the deploy cycle:

A

rudder bias not inhibited

41
Q

to facilitate an accurate setting of climb power

A

CLIMB displayed in green on MFD engine display

42
Q

the APR System is available

A

to any engine with an operative computer

43
Q

DEEC ENG CMPTR switches to what during normal operation

A

AUTO

44
Q

HP Cocks when closed

A

mechanically lock thrust levers in full idle position

45
Q

APR does what

A

MAY allow automatic increase in engine thrust in event of engine failure

46
Q

auto mode for APR activates

A

when an uncommanded split in N2 occurs of 15% or more

47
Q

clogged oil filter

A

filter bypass displayed on a maintenance panel in the rear equipment bay

48
Q

Start calls

A

Start (operating button)
N2 (connected to starter/generator via tower shaft) (At 12% rotation without making a call HP cock up)
ignition
fuel flow
ITT
N1
Oil (at 49 PSI)

49
Q

clogged fuel filter

A

ENG FUEL 1 or 2 annunciator
indicates fuel filter is being blocked and bypassed

AT 354 (12 decks)

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