GE began design work in 1949 on the XJ47-21 (later J73-GE-3) in response to an Air Force requirement for an all-weather engine capable of attaining 18.2 km (60,000 ft.) altitude. After a problematic development program, the J73 passed its 150-hour military qualification test in 1954. The engine was considered by various manufacturers as a power plant for the Boeing KC-97, Boeing B-47C, Republic F-84, and the Northrop YF-89E aircraft. However, only North American made a commitment for its F-86H fighter.

The J73 produced almost 50 percent more thrust than its J47 predecessor, and was GE's engine to incorporate titanium, a two-stage turbine, variable stators (inlet guide vanes), and cannular combustor. It became operational in the North American F-86H in 1953, powering this aircraft to a world speed record of 1,038 km/hr (649 mph) over a 500 km (313 mile) course. A total of 876 -3 engines were purchased by the Air Force, with production completed in 1956.

 Display Status

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.
Object Details
Date 1954 Country of Origin United States of America Type PROPULSION-Turbines (Jet) Manufacturer General Electric Aircraft Engines
 Physical Description Type: Turbojet Thrust: 40,032 N (9,000 lb) at 8,000 rpm Compressor: 12-stage axial Combustor: 10 combustion chambers Turbine: 2-stage axial Weight: 1,633 kg (3,600 lb) Dimensions Length 508 cm (200 in.), Diameter 93.3 cm (36.75in.)
 Inventory Number A19870353000 Credit Line Gift of the New England Air Museum Data Source National Air and Space Museum Restrictions & Rights Usage conditions apply
For more information, visit the Smithsonians Terms of Use.