R22 POH 1 General - 21FEB14
Terms in this set (52)
What are all the dimension of the R22?
What is the main rotor's articulation?
Two bladed underslung rotor system, free to teeter and cone, rigid inplane
What is the diameter of the main rotor?
What is the main rotor's blade chord?
7.2" constant (A016-6 blades not constant)
What is the main rotors blade twist?
What is the main rotor's tip speed at 100% RPM?
What is the tail rotor's articulation?
Two bladed, free to teeter, rigid in plane
What is the diameter of the tail rotor?
What is the tail rotor's blade chord?
What is the tail rotor's blade twist?
What is the pre-coning angle of the tail rotor?
What is the tail rotor's tips speed at 100% RPM?
What is the drive system from the engine to the upper sheave?
Two double eve-belts with .8536:1 reducing ratio
What is the drive system from the upper sheave to the drive line?
Sprag type overrunning clutch
What is the drive system from the drive line to the main rotor?
Spiral-bevel gears with 11:47 speed reducing ratio
What is the drive system from the drive line to the tail rotor?
Spiral-bevel gears with 3:2 speed increasing ratio?
What type of engine is in the R22 Beta II and what horsepower is it rated to?
Lycoming O-360 J2A (361 cu in)
- 145 BHP (de-rated from 180 BHP) @ 2700rpm
- 131 BHP 5 min Takeoff Power @ 2652rpm
- 124 BHP Max Continuous @ 2652rpm 104%
How is the engine cooled?
Air-cooled direct drive squirrel-cage blower
What is KIAS?
Knots indicated airspeed as shown on the airspeed indicator
What is KCAS?
Knots calibrated airspeed is KIAS corrected for instrument and position error (pg 5-2 in POH)
Speed for best rate of climb
What is ISA?
International Standard Atmosphere exists when pressure is 29.92" Hg at sea level, temperature is 15°C and temp decreases 1.98°C per 1000' of altitude
Mean sea level, altitude above sea level when barometric sub scale is set to atmospheric pressure existing at sea level
Altitude, in feet, indicated by the altimeter (corrected for position and instrument error) when the barometric subsoil is set to 29.92" Hg
Altitude, in feet, in ISA conditions at which the air would have the same density - Pressure altitude corrected for outside air temperature
What is BHP?
Break Horsepower is actual output power of the engine
What is MAP?
Manifold Pressure is the absolute pressure, in inches of Hg, in the engine intake manifold
What is RPM?
Revolutions Per Minute, or speed of engine or main rotor. (shown by tachometer as percentage of 2550 engine RPM or 510 main rotor RPM)
Max Continuous Power
Takeoff Power (usually for a maximum of 5 min)
Altitude at which full throttle produces maximum allowable power (MCP or TOP)
Takeoff Gross Weight
Outside Air Temperature
Carburator Air Temperature
Cylinder Head Temperature
Gallons Per Hour
Above Ground Level
In Ground Effect
Out of Ground Effect
A reference vertical plan from which horizontal distance are measured for balance purposes. The reference datum is 100 inches forward of the main rotor shaft centerline for the R22
Fore-and-aft location along the helicopter fuselage usually given in terms of distance in inches from the reference datum
The weight of an item multiplied by its arm
Center of Gravity (CG)
Location along the fuselage (usually expressed in inches from the reference datum) at which the helicopter would balance. CG is calculated by dividing total helicopter moment by total helicopter weight.
Extreme CG locations within which the helicopter must be operated at a given weight
Fuel available for flight planning.
Fuel remaining after a runout test has been completed in accordance with governmental regulations
Standard Empty Weight
Weight of standard helicopter including unusable fuel, full operating fluids, and full oil.
Basic Empty Weight
Standard empty weight plus wight of installed optional equipment.
Weight of occupants, cargo, and baggage.
Difference between maximum takeoff weight and basic empty weight.