The XH-H51A. The Lockheed XH-51 (Model 186) was an American single-engine experimental helicopter utilizing a rigid rotor and retractable skid landing gear. The XH-51A differed by having wings and a J60-2 turbojet engine attached to the left one.
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The XH-H51A. The Lockheed XH-51 (Model 186) was an American single-engine experimental helicopter utilizing a rigid rotor and retractable skid landing gear. The XH-51A differed by having wings and a J60-2 turbojet engine attached to the left one.