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TH-57 Systems Quiz CH3 & CH4
All Questions From Chapter 3 & 4 Systems Workbook
25
Aviation
Graduate
03/23/2013

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Cards

Term
The boost pumps send (pressurized/unpressurized) fuel to the engine-driven fuel pump.
Definition
Pressurized
Term
At what altitude can fuel vaporization occur?
Definition
Above 6000’
Term
The fuel pump caution light illuminates if boost pump pressure
Definition
falls below 3.5 psi.
Term
T/F: With one boost pump operational, it is acceptable to perform maneuvers that would momentarily uncover the pump intake screen.
Definition
False
Term
A float type fuel quantity indicating unit is installed in the
Definition
lower and upper sections of the fuel cell.
Term
The fuel shutoff valve will remain in the last position selected in the event of
Definition
electrical failure.
Term
The impending bypass switch causes the __________ caution light to illuminate if fuel pressure drops below safe limits.
Definition
A/F fuel filter
Term
T/F: The airframe fuel filter bypass valve routes fuel back to the fuel cell if fuel filter stoppage is experienced.
Definition
False
Term
The fuel control unit receives fuel at _____ psi of pressure.
Definition
650-750
Term
The main rotor drive includes the _____ _____ and _____ _____.
Definition
Main shaft…main transmission
Term
What is the purpose of the isolation mount?
Definition
Align the transmission and isolate vibrations
Term
A sheared spike well or the spike torn from its mounting would be the indication of an _______ ________ ______________________________.
Definition
Extremely hard landing
Term
At 100% Nr the input to the transmission is rotating at ___ RPM and the rotor mast rotates at ____ RPM.
Definition
6000…394
Term
Lubrication for the transmission is provided by a _____ _____/_____ lubrication system.
Definition
Wet sump/pressure
Term
The transmission oil pump is driven by the ______ ______ ______.
Definition
Accessory gear drive
Term
The shaft that drives the transmission oil pump also drives the _____ _____ and _____ _____.
Definition
Hydraulic pump… Nr tach generator
Term
T/F: If the transmission oil temperature exceeds 110°C, the TRANS OIL TEMP caution light illuminates.
Definition
True
Term
If the transmission oil pressure drops below ___, the TRANS OIL PRESS caution light illuminates.
Definition
Minimum
Term
What is the purpose of the transmission oil cooler?
Definition
Regulate the oil temperature before it flows to the transmission and freewheeling unit
Term
T/F: The freewheeling unit chip detector is electrical and will illuminate a caution light when meal particles are present.
Definition
False
Term
How does the freewheeling unit function in an autorotation?
Definition
It allows the power train to rotate free of the engine
Term
If the main drive shaft fails, what drives the tail rotor?
Definition
The engine
Term
What lubrication system provides lubrication to the freewheeling unit?
Definition
Transmission lubrication system
Term
What type of lubrication system is used in the tail rotor gearbox?
Definition
Self-contained splash type
Term
What unit transmits power from the power outlet shaft to the barbell shaft?
Definition
Freewheeling unit
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