Originating from the redesign of the R-5A (VS-317) developed in 1945.  he passenger capacity is upgraded to four. 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 devices: 1 Single main rotor

Dedicated control device: 1 Tail rotor

Crew required: 1-2 in Tandem arrangement

Landing gear: Wheels (non-retractable)

Key Characteristics

Data on key physical features

Aircraft Details

Data on aircraft configuration, weights, flight performance and equipment

Related VFS Resources

Resources related to the S-51 , provided by the Vertical Flight Society.
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Related Public Resources

Resources related to the S-51 , provided by public sources across the internet.

Images