Continuation of the Model 1-G series.

Overview

Data on design, manufacture and status

Parent type: No type defined

Aircraft status: No longer flying

Configuration

Primary flight and mechanical characteristics

VTOL type: Convertiplane

Compound type: N/A

Lift devices: 2 in Tilt shaft configuration

Crew required: 1-2 in Side-by-side arrangement

Landing gear: Wheels (non-retractable)

Key Characteristics

Data on key physical features

Aircraft Details

Data on aircraft configuration, weights, flight performance and equipment

References

References and sources used

Helicopters & Autogyros of the World
Paul Lambermont, Anthony Pirie
Cassell & Company Ltd., 1959 (page 397)
Book

S-47 | S-47/R-4 Helicopter
Vinny Devine
Sikorsky Archives | Product History, Sep 19, 2017 (page 20)
Website
Very thorugh description and details of the R-4 series helicopter

Related VFS Resources

Resources related to the Model 2 Convertiplane, provided by the Vertical Flight Society.
Forum Proceedings
 
Vertiflite articles
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Web files from vtol.org
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Webpages from vtol.org
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Images from the VFS Gallery
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Related Public Resources

Resources related to the Model 2 Convertiplane, provided by public sources across the internet.

Images