Powertrain and Rotor Systems Flashcards
The ________ accessory module has a low oil pressure switch and chip detector.
Left
The main transmission is made up of ____ modules.
Five
Each accessory module drives both ________ and ________ .
Main generator, Hydraulic pump
Oil pressure should remain steady in the __ to __ psi range to ensure that when fluctuations occur, they remain in the acceptable range.
45 to 60
What caution appears if a chip detector fails the PBIT?
CHIP IBIT FAIL
The fuzz burn-off feature is deactivated when oil temperature reaches ___°C.?
140
- The intermediate and tail gear box may run at cruise flight for ___ minutes, with loss of all oil.
30
- When gear box oil temperature reaches 140°C, the _____ _____ feature de-activates.
Fuzz Burn
What is the maximum NR for normal shutdown operations of the rotor brake?
NR below 40%, 150–180 psi applied, in not less than 12 seconds
- With rotor brake applied, what is the contingency which allows you to move the PCLs from idle to fly?
idle inter-lock lever
Operating an engine against the gust lock __ _______ on rotor brake equipped helicopters.
is prohibited
The rotor brake solenoid prevents movement of the ______ _____ ______ from idle to fly.
Engine power levers
One advantage of the wide chord blades is _________________.
increased maneuverability
The three control inputs connecting the primary servos to the main rotor swashplate are the _______, ___, and _______ control rods.
Forward, Aft, and Lateral
. The tail rotor provides approximately _____ lift.
2.5%
The tail rotor is mounted on the right side of the tail pylon, and canted _____
upward.
20˚
Decreasing NR may be accompanied by a drop in transmission oil pressure of _____ psi or more.
10
The severity of vibrations can usually be minimized by __________________.
reducing airspeed
