Developed in 1958, powered by two air bleed turbine engines and equipped with a rudder on the tail, using the exhaust to steer.

Overview

Data on design, manufacture and status

Design authority: Monte-Copter, Inc.

Primary manufacturer: Monte-Copter, Inc.

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 Rudder

Crew required: 1 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

S-47 | S-47/R-4 Helicopter
Vinny Devine
Sikorsky Archives | Product History, Sep 19, 2017 (page 9)
Website
Very thorugh description and details of the R-4 series helicopter

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