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Robinson R44 Raven I > Section 1 - General > Flashcards

Section 1 - General Flashcards

(62 cards)

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1
Q

Main Rotor - Articulation

A

Free to teeter and cone, rigid inplane

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2
Q

Main Rotor - Diameter

A

33 ft

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3
Q

Main Rotor - Tip Speed at 102% RPM

A

705 feet per second

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4
Q

Number of Blades

A

Two

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5
Q

Main Rotor - Blade Chord

A

10.0 inches inboard,
10.6 inches outboard

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6
Q

Main Rotor - Blade Twist

A

-6 degrees

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7
Q

Tail Rotor - Articulation

A

Free to teeter, rigid inplane

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8
Q

Tail Rotor - # of Blades

A

Two

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9
Q

Tail Rotor - Diameter

A

58 inches

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10
Q

Tail Rotor - Blade Chord

A

5.1 inches (constant)

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11
Q

Tail Rotor - Blade Twist

A

Zero

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12
Q

Tail Rotor - Precone Angle

A

1 Degree

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13
Q

Tail Rotor - Tip Speed at 102% RPM

A

614 feet per second

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14
Q

Drive System - Engine to Upper Sheave

A

Four double Vee-belts with 0.778:1 speed reducing ratio

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15
Q

Drive System - Upper Sheave to Drive Line

A

Spray-type overrunning clutch

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16
Q

Drive System - Drive Line to Main Rotor

A

Spiral-bevel gears with 11:57 speed reducing ration

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17
Q

Drive System - Drive Line to Tail Rotor

A

Spiral-bevel gears with 31:27 speed increasing ratio

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18
Q

Powerplant - Model

A

Lycoming 0-540-F1B5

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19
Q

Powerplant - Type

A

Six cylinder, horizontally opposed, direct drive, air cooled, carbureted, normal aspirated

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20
Q

Powerplant - Displacement

A

541.6 cubic inches

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21
Q

Powerplant - Normal Rating

A

260 BHP @ 2800 RPM

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22
Q

Powerplant - Maximum continuous rating in R44

A

205 BHP at 2718 RPM (102% on tachometer)

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23
Q

Powerplant - 5 Minute take off rating in R44

A

225 BHP at 2718 RPM

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24
Q

Powerplant - Cooling System

A

Direct drive squirrel-cage blower

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25
Performance Definitions - KIAS
Knots Indicated Airspeed is speed shown on the airspeed indicator
26
Performance Definitions - KCAS
Knots Calibrated Airspeed is speed shown on the airspeed indicator corrected for instrument and postion error
27
Performance Definitions - KTAS
Knots True Airspeed is airspeed relative to undisturbed air. It is KCAS corrected for pressure altitude and temperature
28
Performance Definitions - VNE
Never-Exceed Airspeed
29
Performance Definitions - Vy
Speed for best rate of climb
30
Performance Definitions - Vh
Stabilized level-flight speed at maximum continous power
31
Performance Definitions - MSL Altitude
Altitude above mean sea level, indicated by the altimeter )corrected for instrument error) when the barometric sub-scale is set to the atmospheric pressure existing at sea level
32
Performance Definitions - Pressure Altitude
Altitude indicated by the altimeter (corrected for instrument error) when the barometric sub-scale is set to 29.92 inches of mercury (1013.2 mb)
33
Performance Definitions - Density Altitude
Altitude in ISA conditions at which the air would have the same density (it is pressure altitude corrected for OAT)
34
Performance Definitions - ISA
International Standard Atmosphere exists when pressure is 29.92 inches of mercury at sea level, temperature is 15 degrees C at sea level, and temperature decreases 1.98 degrees C per 1000 feet of altitude
35
Performance Definitions - BHP
Brake Horsepower is actual power output of the engine
36
Performance Definitions - MAP
Manifold Absolute Pressure is the absolute pressure in the engine intake manifold
37
Performance Definitions - RPM
Revolutions Per Minute or speed of engine or rotor. (Shown by tachometer as percentage of 2665 engine RPM and 400 main rotor RPM)
38
Performance Definitions - RPM
Revolutions Per Minute or speed of engine or rotor. (Shown by tachometer as percentage of 2665 engine RPM and 400 main rotor RPM)
39
Performance Definitions - MCP
Maximum Continuous Power
40
Performance Definitions - TOP
Takeoff Power (limited to 5 minutes in the R44)
41
Performance Definitions - Critical Altitude
Altitude at which full throttle produces maximum allowable power (MCP or TOP).
42
Performance Definitions - TOGW
Take off Gross Weight
43
Performance Definitions - OAT
Outside Air Temperature
44
Performance Definitions - CAT
Carburetor Air Temperature
45
Performance Definitions - CHT
Cylinder Head Temperature
46
Performance Definitions - GPH
Gallons Per Hour
47
Performance Definitions - AGL
Above Ground Level
48
Performance Definitions - IGE
In Ground Effect
49
Performance Definitions - OGE
Out of Ground Effect
50
Performance Definitions - ALT
Alternator
51
Weight and Balance Definitions - Reference Datum
A vertical plane from which horizontal distances are measured for balance purposes. The Longitudinal reference datum is 100 inches forward of the main rotor shaft centerline for the R44.
52
Weight and Balance Definitions - Station
Fore-and-aft location along the helicopter fuselage given in terms of distance in inches from the longitudinal reference datum.
53
Weight and Balance Definitions - Arm
Horizontal distance from a reference datum to the center of gravity (CG) of an item.
54
Weight and Balance Definitions - Moment
The weight of an item multiplied by its arm
55
Weight and Balance Definitions - Center of Gravity (CG)
Location on the fuselage (usually expressed in inches from the reference datum) at which the helicopter would balance. CG is calculated by dividing the total helicopter moment by total helicopter weight.
56
Weight and Balance Definitions - CG Limits
Extreme CG location within which the helicopter must be operated at a given weight
57
Weight and Balance Definitions - Usable Fuel
Fuel available for flight planning
58
Weight and Balance Definitions - Unusable Fuel
Fuel remaining in the tank that cannot reliably proceed uninterrupted fuel flow in the critical flight attitude.
59
Weight and Balance Definitions - Standard Empty Weight
Weight of a standard helicopter including unusable fuel, full operating fluids, and full engine oil.
60
Weight and Balance Definitions - Basic Empty Weight
Standard empty wight plus weight of installed optional equipment
61
Weight and Balance Definitions - Payload
Weight of occupants, cargo, and baggage
62
Weight and Balance Definitions - Useful Load
Difference between maximum gross weight and basic empty weight.

Robinson R44 Raven I (2 decks)

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