The aircraft was designed as a low-cost tactical helicopter demonstrator, based around the rotors, engines, hydraulic/electrical systems, and drive train of the S-61/H-3 series aircraft. It was a "semi-compund" design in that it was equipped with a lifting wing to off-load the rotor in high speed flight, but did not feature any auxiliary propulsion systems.

 

The main wheels were fully retractable but the tail wheel was fixed.

Overview

Data on design, manufacture and status

Design authority: Sikorsky Aircraft Division, United Aircraft and Transport Corporation

Primary manufacturer: Sikorsky Aircraft Division, United Aircraft and Transport Corporation

Parent type: No type defined

Aircraft status: No longer flying

Configuration

Primary flight and mechanical characteristics

VTOL type: Helicopter

Compound type: Lift

Lift configuration: Single main rotor

Dedicated control device: Tail rotor

Crew required: 2

Crew seating: Tandem

Landing gear: Wheels (some retractable)

Overall Dimensions

Data on aircraft size

Overall Height: 4.95 m (16.3 ft)

Overall Length: 22.58 m (74.1 ft)

Overall Width: 18.90 m (62.0 ft)

Engine Details

Aircraft powerplant (lift and/or propulsion)

Total number of engines: 2

Engine designation: GE T58-GE-5 turbine

Engine manufacturer: General Electric Company

Max continuous power: 933 kW (1250 hp)

Take-off / rated power: 1119 kW (1500 hp)

Intermediate power: 1044 kW (1400 hp)

Weights and Performance

Data on aircraft weight and flight characteristics

Max Gross Weight (ground): 9979 kg (22000 lb)

Max Range: 522 km (282 nm)

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