Sikorsky XR-4

Initial prototype for the R-4 series. Referred to in some references by the designation XR-4A. This aircraft (there was only 1 built) was later converted to the XR-4C prototype.

Overview

Data on design, manufacture and status

Design authority: Sikorsky Aircraft Corp.

Primary manufacturer: Sikorsky Aircraft Corp.

Parent type: Sikorsky S-47/R-4

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 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

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Resources related to the XR-4 , provided by the Vertical Flight Society.
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Related Public Resources

Resources related to the XR-4 , provided by public sources across the internet.

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