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Robinson- R22 General > General- R22- Section 1 > Flashcards

General- R22- Section 1 Flashcards

1
Q

Main Rotor-Articulation

A

Free to teeter and cone, Rigid inplane

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2
Q

Main Rotor- Number of Blades

A

2

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3
Q

Main Rotor- Diameter

A

25 Feet 2 inches

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4
Q

Main Rotor- Blade Chord

A
  1. 2 inches inboard

7. 7 inches outboard

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5
Q

Main Rotor- Blade Twist

A

-8 Degrees

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6
Q

Main Rotor-Tip Speed at 104% RPM

A

698 feet per second

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7
Q

Tail Rotor-Articulation

A

Free to teeter, Rigid inplane

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8
Q

Tail Rotor- Number of Blades

A

2

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9
Q

Tail Rotor- Diameter

A

42 inches

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10
Q

Tail Rotor- Blade Chord

A

4 inches (constant)

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11
Q

Tail Rotor- Twist

A

0 degrees

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12
Q

Tail Rotor- Precone angle

A

1 degree 11 minutes

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13
Q

Tail Rotor- Tip speed at 104% RPM

A

622 feet per second

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14
Q

Drive System- Engine to Upper Sheave

A

Two double Vee-belts with .8536:1 speed reducing ratio

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15
Q

Drive System- Upper Sheave to Drive Line

A

Sprag-type overrunning clutch

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16
Q

Drive System- Drive Line to Main Rotor

A

Spiral-bevel gears with 11:47 speed reducing ratio

17
Q

Drive system- Drive Line to tail rotor

A

Spiral- Bevel gears with 3:2 speed increasing ratio.

18
Q

Power Plant- model:

A

Lycoming- 0-360-J2A

19
Q

Power plant- Type

A

Four cylinder, horizontally opposed, direct drive air cooled, carbureted, normally aspirated.

20
Q

Power plant: Displacement

A

361.0 Cubic inches

21
Q

Power Plant- Rating

A

0-360-J2A 145 BHP (derated) @2700 RPM

22
Q

Max Continuous Rating

A

124 BHP at 2652 RPM @104RPM

23
Q

5 minute takeoff rating for Beta and Beta II

A

131 BHP at 2652

24
Q

Cooling System

A

Direct drive squirrel-cage blower

Robinson- R22 General (1 decks)

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