Systems 2 - Power train/Rotor system Flashcards Preview

UH-60M Blackhawk - 2018 > Systems 2 - Power train/Rotor system > Flashcards

Flashcards in Systems 2 - Power train/Rotor system Deck (26)
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1
Q

What does the 2 assesory modules drive?

A
  • Generator #1 and #2
  • Hydraulic pump #1 and #2
2
Q

In what part of the Transimission is the freewheeling unit located?

A

Imput module

3
Q

The 5 parts of the transmission:

A
  • Main module
  • Left and Right Input Module
  • Left and right Accessory Module
4
Q

How many Chip detectors are there in the 5 pac (transmission)?

A

5

5
Q

Is the main transmission oil system an open og closed system?

A

Closed system

6
Q

Why is the oil pressure sensor located in the left hand accessory module when the pumps are located in the bottom of the main transmission?

A

Because it is the furthest part from the pump, and will be the first place the pressure will get low

7
Q

The ________ accessory module has a low oil pressure switch and chip detector.

A

Left

8
Q

The main transmission is made up of ____ modules.

A

Five

9
Q

Each accessory module has a mounting flange for the installation and drive of the:

A

Main ac generator and Main hydraulic pump.

10
Q

Without oil the transmission and gearbox can run up to _____ minutes.

A

30

11
Q

The chip detector fuzz burn deactivates when the oil level reaches _____ degrees

A

140

12
Q

Oil pressure should remain steady in the __ to __ range to ensure that when fluctuations occur, they remain in the acceptable range.

A

45 to 60 psi

13
Q

The Oil Filter has ___ stages.

A

Two

14
Q

What caution appears if a chip detector fails the PBIT during power up?

A

CHIP IBIT FAIL

15
Q

Why does section 2 and 3 of the tail rotor driveshaft consist of multible driveshafts?

A

To increase flexibility

16
Q

When inspecting the flexible couplings, check for _______, _____, and _____.

A

separation, cracks, and security

17
Q

The intermediate and tail gear boxes may run at cruise flight for ___ minutes with loss of all oil.

A

30

18
Q

When gear box oil temperature reaches 140°C, a switch closes and causes the _____ _____ capacitor to discharge.

A

fuzz burn

19
Q

How many Chip Detectors are there total in the Transmission system and where are they located?

A

- 7 total

  • 5 in the 5 Pac
  • 1 in the intermediate gearbox
  • 1 in the tail rotor
20
Q

One advantage of the wide chord blades is ______

A

better maneuverability

21
Q

The elastomeric bearings within the spindle assembly allow the main rotor blade to ________, ______, ______ and ______.

A

feather, flap, lead, lag

22
Q

The purpose of the dampers is ______

A

to limit the lead and lag of the blade

23
Q

The three control inputs connecting the primary servos to the main rotor swashplate are the ______, _____, and ______ control rods.

A

Forward, Aft, and Lateral

24
Q

The rotor brake system is designed to hold the main and tail rotor system during engine starting, with both engines at IDLE and to stop the rotors in approximately ___-___ seconds with 150-180 psi applied at 40% NR during engine shutdown.

A

12-18

25
Q

Operating an engine against the gust lock is ___________ on rotor brake equipped helicopters.

A

prohibited

26
Q

The rotor brake ground idle quadrant lock, when set, prevents the ______ from being moved past the IDLE position.

A

power control levers