Copter Record "A weird-looking aircraft, a cross between a helicopter and a stubby-winged jet, sets a rotorcraft speed record of over 302 mph in an experimental flight. It's the Army's XH-51A. " TLSs Lockheed XH-51A Compound rotorcraft on ground. MS Army pilot Ray Gaudy (sp). Panning TLS XH-51A taking off. MS cockpit during flight. Aerial of XH-51A in flight. Panning LSs rotorcraft in flight. Aerial to Aerial - View from another chopper or plane looking down at the helicopter in flight. Low Angle shot - The XH-51A helicopter flying overhead.