Originating from the redesign of the R-5A (VS-317) developed in 1945.  It was the first FAA certificated helicopter.  The passenger capacity is upgraded to four.  Other designations are H-5 (F, G, H) under the U.S. Air Force (which can be fitted with floats for Air Sea Rescue) and HO3S under the Navy.  The S-51 is the commercial version.

See this at the American Helicopter Museum in West Chester, PA, USA.

Overview

Data on design, manufacture and status

Design authority: Sikorsky Aircraft Corp.

Primary manufacturer: Sikorsky Aircraft Corp.

Parent type: Sikorsky S-51

Aircraft status: No longer flying

Configuration

Primary flight and mechanical characteristics

VTOL type: Helicopter

Lift configuration: Single main rotor

Dedicated control device: Tail rotor

Crew required: 1-2

Crew seating: Tandem

Landing gear: Wheels (non-retractable)

Overall Dimensions

Data on aircraft size

Overall Height: 3.94 m (12.9 ft)

Overall Length: 17.39 m (57.0 ft)

Overall Width: 14.63 m (48.0 ft)

Engine Details

Aircraft powerplant (lift and/or propulsion)

Total number of engines: 1

Engine designation: P&W R-985-AN-7 reciprocating

Engine manufacturer: Pratt & Whitney

Take-off / rated power: 336 kW (450 hp)

Weights and Performance

Data on aircraft weight and flight characteristics

Max Gross Weight (ground): 2495 kg (5500 lb)

Max Range: 418 km (226 nm)

Related VFS Resources

Resources related to the S-51 (HO3S, H-5), provided by the Vertical Flight Society.
Forum Proceedings
 
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Web files from vtol.org
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Related Public Resources

Resources related to the S-51 (HO3S, H-5), provided by public sources across the internet.

Images