Improvment of the R22.  By the glossary definition, with a Useful Load of 546 lb (248 kg), the Empty Weight is calculated to be approximately 374 kg.  The helicopter can carry an external load up to 400 lb (180 kg).

Overview

Data on design, manufacture and status

Design authority: Robinson Helicopter Company

Primary manufacturer: Robinson Helicopter Company

Parent type: Robinson R22

Aircraft status: Operational

Configuration

Primary flight and mechanical characteristics

VTOL type: Helicopter

Lift configuration: Single main rotor

Dedicated control device: Tail rotor

Crew required: 1

Crew seating: Side-by-side

Landing gear: Skids

Layout and Dimensions

Data on aircraft size

Overall Dimensions
Overall Height:  
Overall Length:  
Overall Width:  
Airframe Dimensions
Airframe Length:  
Airframe Width:  
Airframe Height:  
Landing Gear Dimensions
Landing Gear Base:  
Landing Gear Track:  
Cabin Dimensions
Cabin Internal Height:  
Cabin Internal Length:  
Cabin Internal Width:  

Weights and Performance

Data on aircraft weight and flight characteristics

Weights
Max Gross Weight (ground): 621 kg 1,370 lb
Max Gross Weight (airborne):  
Max Take-off Weight: 621 kg 1,370 lb
Empty Weight: 374 kg 824 lb
Useful Load: 248 kg 546 lb
Empty Weight Fraction: 0.601
Climb Performance
Max Rate of Climb:  
Hover Performance
Hover Ceiling IGE:  
Hover Ceiling OGE:  
Limitations
Max Level Flight Speed: 189 km/h 102 kts
Never Exceed Speed:  
Service Ceiling:  
Range and Endurance
Max Range: 385 km 208 nm
Max Endurance:  

Engine Details

Aircraft powerplant (lift and/or propulsion)

Provided powerplant data is for uninstalled, sea level, static operations.

Powerplant
Number of engines: 1
Designation: Lycoming O-320-B2C (R22) reciprocating
Manufacturer: Lycoming Engines
Normal Ratings
Max continuous: 93 kW 124 hp
Take-off / rated: 98 kW 131 hp
Intermediate:  
Maximum:  
OEI Ratings
OEI contingency:  
OEI continuous:  
OEI 30-second:  
OEI intermediate:  

Primary Lift Device

Data on primary lift devices such as main rotors

Main Rotor Characteristics
Diameter: 7.67 m 25.17 ft
RPM: 510.0 rpm 510.0 rpm
Direction of Rotation: Counterclockwise
Hub Type: Teetering hinge with blade coning hinges, rigid in plane
Main Rotor Blade Characteristics
Blade Construction: All-metal, Honeycomb structure
Blade Chord: 0.183 m 0.60 ft
Blade Tip Geometry: Flat
Blade Twist: -0.140 rad -8.000 deg
Number of Blades: 2
Main Rotor Derived Characteristics
Disc Area: 46.22 m² 497.5 ft²
Disc Loading: 13.45 kg/m² 2.754 lb/ft²
Solidity: 0.0304
Main Rotor Blade Derived Characteristics
Blade area per blade: 0.70 m² 7.6 ft²
Tip Speed: 204.84 m/s 672.1 fps

Primary Control Device

Data on primary control devices such as tail rotors

Tail Rotor Characteristics
Diameter:  
Configuration: Unknown
Direction of Rotation: Unknown
RPM:  
Tail Rotor Blade Characteristics
Number of Blades:  
Blade Construction: N/A
Blade Chord:  
Blade Twist:  
Tail Rotor Derived Characteristics
Disc Area:  
Solidity:  
Tail Rotor Blade Derived Characteristics
Tip Speed:  
Blade Area (per blade):  

Related VFS Resources

Resources related to the R22 Alpha, provided by the Vertical Flight Society.
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Related Public Resources

Resources related to the R22 Alpha, provided by public sources across the internet.

Images