General Electric YJ93: Difference between revisions
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The XF-108 interceptor was cancelled outright and the B-70 project was reoriented to a research project only.<ref>[http://home.att.net/~jbaugher2/b58_9.html NB-58A Testbed for General Electric J93<!-- Bot generated title -->]</ref> |
The XF-108 interceptor was cancelled outright and the B-70 project was reoriented to a research project only.<ref>[http://home.att.net/~jbaugher2/b58_9.html NB-58A Testbed for General Electric J93<!-- Bot generated title -->]</ref> |
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==Specifications== |
==Specifications (GE4/J5P)== |
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{{jetspecs |
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* [[Thrust]] |
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|ref= |
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| ⚫ | |||
|type=[[Turbojet]] |
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** with afterburner: {{convert|28,800|lbf|kN|abbr=on}}<ref name="Jenkins_Landis"/> |
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|length= |
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* [[Specific fuel consumption]] |
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|diameter= |
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| ⚫ | |||
|weight= |
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** with afterburner: 1.800 lb/(lb<sub>f</sub>·h)<ref name="turbo"/> |
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|compressor=[[Axial compressor|axial]] |
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|combustion= |
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|turbine=axial |
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|fueltype=Special high-temperature JP-6 Fuel |
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|oilsystem= |
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|power= |
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| ⚫ | |thrust={{convert|19,000|lbf|kN|abbr=on}}<ref name="Jenkins_Landis">Jenkins, Dennis R. and Tony R. Landis. ''North American XB-70A Valkyrie'' WarbirdTech Volume 34. North Branch, Minnesota: Specialty Press, 2002. ISBN 580070566.</ref> ({{convert|28,800|lbf|kN|abbr=on}} with afterburner)<ref name="Jenkins_Landis"/> |
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|compression= |
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|aircon= |
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|turbinetemp= |
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|fuelcon= |
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|power/weight= |
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|thrust/weight= |
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}} |
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===Other Specifications=== |
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* [[Core airflow]]: {{convert|275|lb|abbr=on}} per second<ref name="turbo"/> |
* [[Core airflow]]: {{convert|275|lb|abbr=on}} per second<ref name="turbo"/> |
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Revision as of 19:18, 11 September 2011
| YJ93 | |
|---|---|
| |
| YJ93-GE-3 engine at National Museum of the United States Air Force | |
| Type | Turbojet |
| National origin | United States |
| Manufacturer | General Electric Aircraft Engines |
| Major applications | XB-70 Valkyrie |
The General Electric YJ93 turbojet engine was designed as the powerplant for both the North American XB-70 Valkyrie bomber and the North American XF-108 Rapier interceptor. The YJ93 was a single-shaft axial-flow turbojet with a variable-stator compressor and a fully variable convergent/divergent exhaust nozzle. The maximum sea-level thrust was 28,800 lbf (128 kN).[1]
Design and development
The YJ93 started life as the General Electric X275, an enlarged version of the J79 turbojet. This evolved to the X279 when Mach 3 cruise became a requirement, and ultimately became the YJ93.[2]
The engine used a special high-temperature JP-6 fuel. The six YJ93 engines in the XB-70 Valkyrie were capable of producing a thrust to weight ratio of 5, allowing for a speed of 2,000 mph (3,200 km/h) (approximately Mach 3) at an altitude of 70,000 feet.[3]
The XF-108 interceptor was cancelled outright and the B-70 project was reoriented to a research project only.[4]
Specifications (GE4/J5P)
General characteristics
- Type: Turbojet
- Length:
- Diameter:
- Dry weight:
Components
Performance
- Maximum thrust: 19,000 lbf (85 kN)[1] (28,800 lbf (128 kN) with afterburner)[1]
- Specific fuel consumption: 0.700 lb/(lbf·h)[5] (1.800 lb/(lbf·h) with afterburner)[5]
Other Specifications
- Core airflow: 275 lb (125 kg) per second[5]
See also
Related development
Comparable engines
Related lists
References
- ^ a b c Jenkins, Dennis R. and Tony R. Landis. North American XB-70A Valkyrie WarbirdTech Volume 34. North Branch, Minnesota: Specialty Press, 2002. ISBN 580070566.
- ^ Jenkins, Dennis R. and Tony R. Landis. Valkyrie: North American's Mach 3 Superbomber. North Branch, Minnesota: Specialty Press, 2005. ISBN 1-58007-072-8.
- ^ National Museum of the USAF
- ^ NB-58A Testbed for General Electric J93
- ^ a b c Military Turbojet/Turbofan Specifications
External links
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