Beginning development in 1945, known as the XH-39 by the U.S. Army.

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: Helicopter

Lift devices: 1 Single main rotor

Dedicated control device: 1 Tail rotor

Crew required: 2 in Side-by-side arrangement

Landing gear: Wheels (all 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 386)
Book

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

Sikorsky Archives | S-59
Sikorsky Archives, Vinny Devine
SEPTEMBER 11, 2012
Website

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Resources related to the S-59 (XH-39), provided by the Vertical Flight Society.
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Related Public Resources

Resources related to the S-59 (XH-39), provided by public sources across the internet.

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