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UH60M systems 2 > Drivetrain/rotorsystems > Flashcards

Drivetrain/rotorsystems Flashcards

1
Q

Transmission tilt

A

3 degrees forward

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2
Q

Transmission High speed shaft RPM

A

100% = 20900

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3
Q

Input module reduces input RPM to

A

5750

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4
Q

Main rotor head RPM

A

258

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5
Q

Tailrotor gearbox difference

A

sightglass is bigger

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6
Q

min pressure rotor brake

A

450 psi

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7
Q

max pressure rotor brake

A

690 psi

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8
Q

The chip detector PBIT is _____________ and _________ to the pilot

A

automated on startup, transparent

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9
Q

oil cooler, cooling oil to the?

A

transmission

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10
Q

running one engine against gust lock w. rotor brake installed is?

A

prohibited, dut to angular design (warning)

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11
Q

Rotor brake components

A

SCAR - Solenoid, master Cylinder, Accumulator, Rotor brake assembly

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12
Q

Rotor brake purposes

A

Stop or hold rotor, maintenance, hold rotor static with both engines idle, stop rotor head after eng shutdown

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13
Q

How long time should you take to stop rotor blades?

A

At least 12 seconds, no more than 18 seconds

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14
Q

Main rotor head Lead stop is installed, why?

A

Helps prevent damage to hub when you apply the rotor brake

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15
Q

Rotor brake can be used when?

A

Below 40% NR

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16
Q

Rotor brakecan be used up to what NR in an emergency?

A

76% NR

17
Q

Rotor brake application pressure?

A

150 - 180 PSI

18
Q

Replace all rotor brake linings if any wear pin extends _________ from rotor brake housing

A

3/16-inch or less

19
Q

Main rotor spars are made out of?

A

Graphite-epoxy

20
Q

Main rotor blade width

A

24.25 inches

21
Q

Main rotor blade sweep

A

30 deg anhedral

22
Q

Main rotor blade span

A

24 feet 4 inches

23
Q

During rotor brake operation, what locks the PCL in the idle posistion?

A

Solenoid

UH60M systems 2 (7 decks)

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