Robinson 22 Systems 10/26/2022 Flashcards

1
Q

What is the purpose of the coning hinge?

A

Allows each blade to move up and down independently of the other blade.

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2
Q

What is the purpose of the teetering hinges?

A

Allows the blades to flap together as a unit

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3
Q

What is the purpose of the blade pitch change horn?

A

To give the feathering pitch change mechanism (cyclic/swashplate) a place to attach to the blade

Swash plate => Pitch link => Pitch horn

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4
Q

What is the purpose of the blade grip?

A

Attaches the blade to the main rotor. The pitch links are attached to the blade grips. The blade grips have bearings and fluid inside them.

Rotor head => Blade grip => Rotor blade

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5
Q

What is the purpose of the pitch link?

A

To make sure the blade responds to the collective and cyclic control commands corresponding to the swashplate’s position

Swash plate => Pitch link => Pitch horn

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6
Q

What is the purpose of the swashplate?

A

To transmit the pilot’s commands from the non-rotating fuselage to the rotating rotor hub and blades

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7
Q

Main Rotor System

A
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8
Q

The rods/tubes coming from the cyclic to the stationary swashplate are called

A

Push/pull tubes

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9
Q

What is the purpose of the scissors?

A

Take the load off the pitch linkages

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10
Q

How would you describe the rotor system on the R22?

A

It is a semi rigid, underslung, low inertia system

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11
Q

What is the purpose of the “tip weights”

A

They add a slight bit of weight to the tips of the rotor in order to help with the low inertia

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12
Q

Flapping is also known as what?

A

Teetering

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13
Q

Does the tail rotor cone?

A

NO

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14
Q

Describe the air intake system

A

There is a box at the bottom of the helicopter. This box leads to the carburetor. The air flowing through the carburetor can be one of three types of air:
- Outside air intake
- Heated air intake (from the exhaust shroud)
- Or a combination (controlled by the carb heat control)

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15
Q

What connects the engine to the transmission?

A

V-belts

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16
Q

What is the purpose of the flex couplings?

A

It allows the clutch acuator to move the top pulley up and down in order to tighten the clutch v-belts. This moving up/down slightly changes the position of the drive shaft. This change in position is accounted for by the flex couplers.

17
Q

Where is the sprag clutch located?

A

On the back side of the upper pulley

18
Q

What is the purpose of the sprag clutch? (2 things)

A

1) It transfers power from the engine to the rotor system
2) If the engine fails, it allows the rotor to continue turning, while the engine RPM slows

19
Q

What is a pilot looking for on the teletemps?

A

No more than two squares

20
Q
A

Air intake

21
Q
A

Manifold pressure gauge

22
Q
A

Fuel primer

23
Q
A

Cylinder head temp

24
Q
A

Bell crank assembly

25
Q
A

Carb heat

26
Q
A

Sprag clutch

27
Q
A

Oil return

28
Q
A

Air intake

29
Q

Describe the governor

A

A sensing device that senses rotor and engine RPM and makes the necessary adjustments in order to keep rotor RPM constant.

30
Q

Describe the correlator

A

Mechanical connection between the collective lever and the engine throttle. When the collective is raised, power is automatically increased and vice versa.

31
Q

Does the correlator require slight throttle adjustments? Does the governor?

A

Yes/No