By the glossary definition, with a Useful Load of 486 lb (220 kg), the Empty Weight is calculated to be approximately 369 kg.


Data on design, manufacture and status

Design authority: Robinson Helicopter Company

Primary manufacturer: Robinson Helicopter Company

Parent type: Robinson R22

Aircraft status: Operational


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: 2.72 m 8.9 ft
Overall Length: 8.76 m 28.8 ft
Overall Width: 7.67 m 25.2 ft
Airframe Dimensions
Airframe Length: 6.30 m 20.7 ft
Airframe Width: 1.93 m 6.3 ft
Airframe Height: 2.72 m 8.9 ft
Landing Gear Dimensions
Landing Gear Base:  
Landing Gear Track: 1.93 m 6.3 ft
Cabin Dimensions
Cabin Internal Height:  
Cabin Internal Length:  
Cabin Internal Width: 1.12 m 3.7 ft

Weights and Performance

Data on aircraft weight and flight characteristics

Max Gross Weight (ground): 590 kg 1,300 lb
Max Gross Weight (airborne):  
Max Take-off Weight: 590 kg 1,300 lb
Empty Weight: 369 kg 814 lb
Useful Load: 220 kg 486 lb
Empty Weight Fraction: 0.626
Climb Performance
Max Rate of Climb:  
Hover Performance
Hover Ceiling IGE:  
Hover Ceiling OGE:  
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.

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
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: 12.76 kg/m² 2.613 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

Top blade fwd and 'pusher' configuration evident from aircraft images

Tail Rotor Characteristics
Diameter: 1.07 m 3.50 ft
Configuration: Pusher
Direction of Rotation: Top blade fwd
RPM: 3269 rpm 3269 rpm
Tail Rotor Blade Characteristics
Number of Blades: 2
Blade Construction: All metal
Blade Chord: 0.102 m 0.33 ft
Blade Twist: 0.00 rad 0.0 deg
Tail Rotor Derived Characteristics
Disc Area: 0.89 m² 9.6 ft²
Solidity: 0.1212
Tail Rotor Blade Derived Characteristics
Tip Speed: 182.61 m/s 599.1 fps
Blade Area (per blade): 0.054 m² 0.58 ft²

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