Английская Википедия:General Electric YJ93

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Шаблон:Short description

Шаблон:Infobox Aircraft Engine
Файл:B58j93pod.jpg
YB-58 at Edwards AFB with GE J93 engine pod

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 Шаблон:Convert.[1]

Design and development

The YJ93 started life as the General Electric J79-X275, an enlarged version of the General Electric J79 turbojet with "275" meaning Mach 2.75, the engine's target operating speed.[2] This design evolved into the X279 when Mach 3 cruise became a requirement, and ultimately became the YJ93.[3]

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 5:1 allowing for a speed of Шаблон:Convert (approximately Mach 3) at an altitude of Шаблон:Convert.[4] The first engine went on test in September 1958 and featured advanced technology achievements such as electrolytically drilling longitudinal air cooling holes in the turbine blades.[2]

The XF-108 interceptor was cancelled outright, and the B-70 project was re-oriented to a research project only.[5]

Variants

J93-GE-1
Шаблон:Convert thrust with afterburner.[6]
J93-GE-3
Production variant produced in small numbers for the North American XB-70 Valkyrie program.
J93-GE-3R
Variant with thrust reverser, Шаблон:Convert thrust with afterburner.[7]
J93-GE-3AR
Variant intended for the North American XF-108 Rapier.

Applications

Specifications (J93-GE-3)

Шаблон:Jetspecs

See also

Шаблон:Aircontent

References

Шаблон:Commons category Шаблон:Reflist

Шаблон:GE aeroengines Шаблон:USAF gas turbine engines

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  1. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Jenkins_Landis не указан текст
  2. ↑ 2,0 2,1 Шаблон:Cite book
  3. ↑ Jenkins, Dennis R. and Tony R. Landis. Valkyrie: North American's Mach 3 Superbomber. North Branch, Minnesota: Specialty Press, 2005. Шаблон:ISBN.
  4. ↑ National Museum of the USAF Retrieved: December 21, 2016
  5. ↑ NB-58A Testbed for General Electric J93 Шаблон:Webarchive
  6. ↑ Шаблон:Cite web
  7. ↑ Шаблон:Cite web
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