The British De Havilland H-1 Goblin design began in 1941, and first flew in 1943 in the Gloster Meteor and De Havilland Vampire aircraft. Originally rated at 8,896 N (2,000 lb.) thrust, the Goblin II grew to 13,344 N (3,000 lb.) thrust, and powered the De Havilland Vampire and 108 Swallow.
A British delegation visited U.S. manufacturers in early-1943, revealing important H-1 details and discussing the possibility of building the engine in the U.S. But engines were first imported for the Navy's Curtiss XF15C, and as an alternate for the GE I-40 in the Army Lockheed P-80. The Army used an H-1 engine as the power plant in the prototype XP-80, but replaced it with the more powerful, 17,792 N (4,000 lb.) thrust GE I-40 (J33). Subsequently the Navy contracted with Allis-Chalmers for construction of 40 H-1 engines, known as the J36. However, when delivery was too slow, the contract was canceled after production of seven engines.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.