ATA 62 - MAIN ROTOR Flashcards

1
Q

What type of MR is on the D2?

A

Hingless Main Rotor System

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

The MRB’s are identified how?

A

by numbers and colours

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the Nominal speed of the MRH?

A

383.4 RPM

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the rotor diameter of the MRB’s?

A

11m

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The MRH to MR Mast bolts are what type?

A

x12 titanium stretch bolts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the MR Star made from?

A

Forged blank titanium alloy.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the pre-cone angle of the MR Star Arms?

A

2.5 degrees

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Why are the MR Star Arms pre-coned?

A

To reduce control force input.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is attached to the upper surface of the MR Star?

A

An oil resovior.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What markings are on the oil resovoir?

A

a MIN/MAX sight glass

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What retains the torsion straps?

A

2 quadruple nuts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

The skin plies of the aerodynamic section of the MRB are made from what?

A

Carbon Fibre

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Can you interchange vibration absorbers between blades?

A

No, they are matched to their respective blade.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

MRB skin is made of what materials?

A

Glass fibre and re-enforced plastic, and carbon fibre

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

The trimming surface is made of what and can it be bent?

A

Glass fibre and cannot be bent

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

The trimming tabs are made of what and can they be bent?

A

Aluminium, and they can be bent - but both tabs must be bent at the same time.

17
Q

How is the oil reservoir connected to the arms of the MRH star?

A

by internal bore holes.

18
Q

Where do the skin plies on the MRB converge and what do they create?

A

at the trailing edge to create a torsion box

19
Q

What is the purpose of the torsion box in the MRB?

A

it ensures torsional stiffness.

20
Q

How are the MRB’s connect to the blade fitting assembly?

A

by two bolts, one main that’s torques, and a secondary which is not tightened.