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Academics Exam 2 -72s
Terms in this set (51)
The engine has an independent ______ _____ lubrication system installed on each engine.
The two sections of the fuel control unit are the _________ control and the hydro-_______ control.
1. EMER OFF switch released
2. N1 RPM of the respective engine <50%
3. BOT1/BOT2 switch depressed
4. FIRE warning on (Signal from one of the 3 detectors)
What 4 conditions must exist to activate the engine fire extinguishing system?
The major components of the accessory gearbox are the ______ gear train and the _____ gear train.
R: Rotor Speed
The ____ gear train drives the main transmission, which drives the main and tail rotor systems.
In the event of an overspeed, the _____ and _____ valve activates to shut down the engine.
To keep the rotor speed constant under all operations.
Allow manual control of fuel for starting and in case of fuel control failure.
What are the 2 functions of the engine control system?
Which engine module reduces the power turbine RPM, and transfers power forward to the power output flange?
The _____ _____ turbine drives the compressor.
The _____ gear train drives the starter generator and the oil pump.
During the start sequence, you must turn on the _____ _____ switches in order to supply fuel to the engines.
_____ air is used to aid in start injector ventilation, prevent compressor stalls, and provide cabin heat.
The FWD main tank is connected to the supply tanks by two overflows which are installed at different heights to achieve different volumes of the supply tanks to avoid simultaneous ____ of both ____.
There are __________ fuel tanks in the UH-72 located beneath the cabin floor. (give quantity)
The purpose of the Fuel Vent System is to keep the fuel tanks [a] under all operating conditions.
Total fuel capacity?
Main tanks fuel capacity?
Right supply tank's fuel capacity (larger tank)?
Left supply tank's fuel capacity (smaller tank)?
The total fuel quantity in the two supply tanks will always be ____ until the fuel in the main tanks is exhausted.
aft main tank, forward main tank, supply tanks
The _____ supplies fuel via the jet pump into the _____, which supplies fuel via the transfer pumps into the _____ for delivery to the engines.
The prime pumps are located in the _____ tanks while the transfer pumps are located in the _____ tanks.
Before attempting an inflight restart, wait for the N1 to equal __%.
flip, flop or C, double arrow
To change the standby frequency to active, press the ____ / ____ button.
The Wulfsberg P-2000 radio is installed in the UH-72 and is only used to communicate with _____ _____.
If you are squawking 1200 and want to return to your previous squawk code, what single button can you press to return?
When using the keypad method to change a frequency, press the #/NUM key, enter the new frequency, then press the ___ / ___ button.
A logbook entry and maintenance action are required to be performed when the mast moment indicator reaches a level greater than ___%
In forward flight, the Delta hinge system allows for _____.
main rotor blades
The lift and propulsion required for flight are generated by the ______.
main rotor, tail rotor, accessories
The main transmission reduces the input RPM of the two engines to the required output RPM for the ____, ____and ____.
tail rotor gearbox
What component changes the direction of the power flow coming from the intermediate gearbox to the tail rotor assembly?
On preflight, the oil level of the main transmission is checked via the _____.
What component changes the power flow coming from the main transmission to the tail rotor gearbox?
Which component reduces the engine output speed and transmits power from the engines to the main and tail rotor systems?
Aircraft in trim
Ball centered in inclinometer
The actual flight path of an aircraft over the surface of the earth
roll on throttle
Increase power using the throttle
Look at the trim ball and center it
When a fix, point or object is approximately 90 degrees to the left/right of aircraft track. A general position not a precise point.
neutralize the controls
Place all flight controls into neutral position. Cyclic centered, Collective full down and Pedals neutral
The incorporation of crewmembers into cockpit management is called ______
N1 RPM is at normal operating speed for idle
Movement left and right about the longitudinal axis of the aircraft.
Movement around the vertical axis of the helicopter
The minimum power required to start the UH-72A is _____ Volts?
When operated by the battery, how many VDC (Volts DC) does the electrical power supply system supply to the airborne electrical system?
When operated by the generators, how many VDC (Volts DC) does the electrical power supply system supply to the airborne electrical system?
main bus 1, main bus 2
Momentarily placing the BAT MSTR switch to the ENGAGE position connects the battery to the _____ and _____
ep Supply system, ep Distribution system, ep Consumers
What are the three main sub-systems of the Electrical System?
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