This is the aircraft in a 4 main blade configuration, employed to resolve high vibration issues with the earlier configuration

Overview

Data on design, manufacture and status

Design authority: Lockheed-California Company

Primary manufacturer: Lockheed-California Company

Parent type: Lockheed XH-51

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: Skids (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 XH-51A (4 blade configuration) , provided by the Vertical Flight Society.
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Related Public Resources

Resources related to the XH-51A (4 blade configuration) , provided by public sources across the internet.

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