• Source: General Electric GE4

The General Electric GE4 turbojet engine was designed in the late 1960s as the powerplant for the Boeing 2707 supersonic transport. 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. 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. The Boeing 2707 was cancelled in 1971, putting an end to further work on the GE4.




Specifications (GE4/J5P)


Data from



General characteristics

Type: Afterburning turbojet
Length: 27ft 4 in (8,331mm)
Diameter: 5ft 11 in (1,803mm)
Dry weight: 11,300 lb (5,100 kg)



Components

Compressor: Nine-stage axial
Combustors: Annular straight-through-flow
Turbine: Two-stage axial
Fuel type: Special high-temperature JP-6 Fuel



Performance

Maximum thrust: 50,000 lbf (220 kN) (63,200 lbf (281 kN) with afterburner)
Overall pressure ratio: 12.5:1
Turbine inlet temperature: 2,200 °F (1,204 °C)
Thrust-to-weight ratio: 6.02
Power-to-weight ratio: 6.07




= Other Specifications

=
Compressor inlet diameter: 60.6 in (1,539 mm)
Exhaust nozzle diameter: 74.2 in (1,880 mm)
Core airflow: 620 lb (280 kg) per second
Noise:
Takeoff: 104 dB
Sideline: 117 dB
Approach: 107 dB




See also



Related development

General Electric J79
General Electric YJ93

Comparable engines

Kuznetsov NK-32
Rolls-Royce/Snecma Olympus 593
Related lists

List of aircraft engines




References

Kata Kunci Pencarian:

• General Electric GE4
• General Electric YJ93
• GE Aerospace
• Pratt & Whitney J58
• Boeing 2707
• Lockheed L-2000
• Rolls-Royce/Snecma Olympus 593
• Boom Symphony
• List of aircraft engines
• Hiduminium