| National origin | United States |
|---|---|
| Manufacturer | General Electric |
| First run | 1967 |
| Major applications | |
| Produced | 1967 – 1972 |
| Number built | 3[citation needed] |
| Developed from | General Electric YJ93 |
The General Electric GE4 turbojet engine was designed in the late 1960s as the powerplant for the Boeing 2707 supersonic transport.[1][2] The GE4 was a nine-stage, single-shaft, axial-flow turbojet based largely on the General Electric YJ93 which powered the North American XB-70 bomber.[3] The GE4 was the most powerful engine of its era, producing 50,000 lbf (220 kN) dry, and 65,000 lbf (290 kN) with afterburner.[4] The Boeing 2707 was cancelled in 1971, putting an end to further work on the GE4.
Specifications (GE4/J5P)
Other Specifications
- Compressor inlet diameter: 60.6 in (1,539 mm)[5]
- Exhaust nozzle diameter: 74.2 in (1,880 mm)
- Core airflow: 620 lb (280 kg) per second
- Noise:
References
- ^ "Advanced supersonic technology study - Engine program summary supersonic propulsion - 1971 to 1976". Archived 2024-11-05 at the Wayback Machine.
- ^ "The Greatest Program That Never Was: The U.S.'s Answer to Concorde | GE Aerospace News"
- ^ FLIGHT International. 6 January 1966. p. 33.
- ^ FLIGHT International. 6 January 1972. pp. 16a–17.
- ^ Aircraft engines of the world, Paul H. Wilkinson, 1970. ISBN 0-911710-24-8