General Electric YJ93: Difference between revisions
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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.<ref name="Jenkins_Landis"/> |
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.<ref name="Jenkins_Landis"/> |
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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 |
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 (approximately Mach 3) at an altitude of 70,000 feet.<ref>[http://www.nationalmuseum.af.mil/factsheets/factsheet.asp?id=876 National Museum of the USAF]</ref> |
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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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Revision as of 11:20, 30 January 2009
| 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.[1]
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 (approximately Mach 3) at an altitude of 70,000 feet.[2]
The XF-108 interceptor was cancelled outright and the B-70 project was reoriented to a research project only.[3]
Specifications
 |
This aircraft article is missing some (or all) of its specifications. If you have a source, you can help Wikipedia by adding them. |
- Thrust dry: 19,000 lbf[1]
- Thrust wet: 28,800 lbf[1]
- SFC dry: 0.700 lb/(lb.h)[4]
- SFC wet: 1.800 lb/(lbf.h)[4]
- Core airflow: 275 lb/s[4]
See also
- General Electric GE4
- Pratt & Whitney J58
- Rolls-Royce/Snecma Olympus 593
- Kuznetsov NK-321
- Tumansky R-15
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.
- ^ National Museum of the USAF
- ^ NB-58A Testbed for General Electric J93
- ^ a b c Military Turbojet/Turbofan Specifications
External links
| This article about aircraft engines is a stub. You can help Wikipedia by expanding it. |