Drivetrain/rotorsystems Flashcards
Transmission tilt
3 degrees forward
Transmission High speed shaft RPM
100% = 20900
Input module reduces input RPM to
5750
Main rotor head RPM
258
Tailrotor gearbox difference
sightglass is bigger
min pressure rotor brake
450 psi
max pressure rotor brake
690 psi
The chip detector PBIT is _____________ and _________ to the pilot
automated on startup, transparent
oil cooler, cooling oil to the?
transmission
running one engine against gust lock w. rotor brake installed is?
prohibited, dut to angular design (warning)
Rotor brake components
SCAR - Solenoid, master Cylinder, Accumulator, Rotor brake assembly
Rotor brake purposes
Stop or hold rotor, maintenance, hold rotor static with both engines idle, stop rotor head after eng shutdown
How long time should you take to stop rotor blades?
At least 12 seconds, no more than 18 seconds
Main rotor head Lead stop is installed, why?
Helps prevent damage to hub when you apply the rotor brake
Rotor brake can be used when?
Below 40% NR
Rotor brakecan be used up to what NR in an emergency?
76% NR
Rotor brake application pressure?
150 - 180 PSI
Replace all rotor brake linings if any wear pin extends _________ from rotor brake housing
3/16-inch or less
Main rotor spars are made out of?
Graphite-epoxy
Main rotor blade width
24.25 inches
Main rotor blade sweep
30 deg anhedral
Main rotor blade span
24 feet 4 inches
During rotor brake operation, what locks the PCL in the idle posistion?
Solenoid
