R22 POH Flashcards
Know the R22 POH
1
Q
R22 Dimensions
A
- Skid Width: 76”
- Chasis Width: 44”
- Total Height: 107”
- Skid to Tail Rotor Length: 21’-7”
- Overall Length: 28’-9”
- Rotor Diameter: 25’-2
2
Q
Main Rotor System
A
- Semi-Rigid: Free to teeter and cone, rigid inplane
- 2 Blades
- 25’-2” Diameter
- Blade Chord: 7.2”
- Twist: -8degrees
- Tip Speed @ 100% RPM: 672FPS
3
Q
Tail Rotor System
A
- Articulation: Free to teeter, rigid inplane
- 2 Blades
- 3’-6” Diameter
- Chord: 4”
- Twist: 0degrees
- Precone angle: 1d11m
- Tip Speed @ 100%RPM: 599FPS
4
Q
Drive System
A
- Engine to Upper Sheave: Two double vee-belts w/ 0.8536:1 speed reducing ratio
- Upper Sheave to Drive Line: Sprag type overruning clutch
- Drive Line to Main Rotor: Spiral-Bevel gears w/ 11:47 speed reducing ratio
- Drive Line to Tail Rotor: Spiral-Bevel gears w/ 3:2 speed increasing ratio
5
Q
Powerplant
A
- Lyc- oming 0-360-J2A
- 4 Cylinder
- DAHNC: Direct drive, Air cooled (direct drive squirrel-cage blower), Horizontally opposed, Normally aspirated, Carbureted
- Max Engine Output Power: 145 BHP @ 2700RPM (R22 Beta II)
- Max Continuous Rating: 124 BHP @ 2652rpm (104%tach)
- 5 Min Takeoff Power Rating: 131 BHP @ 2652rpm
6
Q
Reference Datum Location
A
100” forward of main rotor shaft CL
7
Q
Airspeed Limitations
A
Vne: 102 KIAS (up to 3000’DA; see Alt/OAT chart above 3000’DA)
8
Q
Rotor Speed Limits
A
Power On: - Max 104% (530rpm) - Min 101% (515rpm) Power Off: - Max 110% (561rpm) - Min 90% (459rpm)
9
Q
Powerplant Limitations
A
Engine Max Speed: 104% (2652rpm) Cylinder Head Max Temp: 500f/260c Oil Max Temp: 245f/118c Oil Pressure: - Min Idle: 25psi - Min flight: 55psi - Max flight: 95psi - Max start/warmup: 115psi Oil Qty Min: 4qt
10
Q
Weight Limits
A
Max Gross Weight: 1370lb (622kg) Min Gross Weight: 920lb (417kg) Max per seat (inc baggage): 240lb (109kg) Max in baggage compart: 50lb (23kg) Min Pilot Weight (w/ doors): 135lb
