Sikorsky S-51
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 statusDesign authority: Sikorsky Aircraft Corp.
Primary manufacturer: Sikorsky Aircraft Corp.
Parent type: Sikorsky S-51
Aircraft status: No longer flying
Configuration
Primary flight and mechanical characteristicsVTOL 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 featuresAircraft Details
Data on aircraft configuration, weights, flight performance and equipmentReferences
References and sources used
Helicopters & Autogyros of the World
Paul Lambermont, Anthony Pirie
Cassell & Company Ltd., 1959 (page 379)
Book
Cassell & Company Ltd., 1959 (page 379)
Book
S-47 | S-47/R-4 Helicopter
Vinny Devine
Sikorsky Archives | Product History, Sep 19, 2017 (page 16)
Website
Very thorugh description and details of the R-4 series helicopter
Sikorsky Archives | Product History, Sep 19, 2017 (page 16)
Website
Very thorugh description and details of the R-4 series helicopter
Related VFS Resources
Resources related to the S-51 , provided by the Vertical Flight Society.Forum Proceedings
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