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Encyclopedia > Westinghouse J40
Westinghouse J40
Westinghouse J40

The Westinghouse J40 was a turbojet engine designed by the Bureau of Aeronautics in early 1946 to power several fighter aircraft. The engine was rated at 7,500 lbs of thrust at sea level static conditions. Turbojets are the simplest and oldest kind of general purpose jet engine. ... The Bureau of Aeronautics (BuAer) was the U.S. Navys material-support organization for Naval Aviation from 1921 to 1959. ... This article or section does not cite its references or sources. ... Thrust is a reaction force described quantitatively by Newtons Second and Third Law. ... For considerations of sea level change, in particular rise associated with possible global warming, see sea level rise. ...


After considering proposals from three other engine companies, the Bureau of Aeronautics contracted with Westinghouse Electric Corporation in June 1947 for its development. The prototype engine first ran in November 1948. According to an article in the April 1949 edition of the Naval Aviation Confidential Bulletin by Lieutenant Commander Neil D. Harkleroad of the Bureau of Aeronautics Power Plant Division, "The engine has been operating successfully to date." As of that writing, the 50-hour flight substantiation test was to have been accomplished by June 1949 and the 150-hour qualification test by December 1949. Westinghouse logo (designed by Paul Rand) The Westinghouse Electric Company, headquartered in Monroeville, Pennsylvania, is an organization founded by George Westinghouse in 1886. ...

The J40-WE-8 with afterburner was to power most of the new Navy single-engine carrier-based fighters, the Grumman XF10F Jaguar variable sweep wing general purpose fighter, the McDonnell F3H Demon interceptor and the Douglas F4D Skyray interceptor. Growth to over 15,000 lbs of thrust in afterburner was projected. A version without afterburner, the J40-WE-6, was to power Douglas’ A3D Skywarrior twin-engine carrier-based bomber. The WE-8 was only a little over 40 inches in diameter but 25 feet long, with accessories and including the afterburner. It weighed almost 3,500 pounds, the -6 being almost seven feet shorter and about 600 pounds lighter since it did not have an afterburner. For other uses of afterburner, see Afterburner (disambiguation). ... The Grumman Aircraft Engineering Corporation, later Grumman Aerospace Corporation, was a leading producer of military and civilian aircraft of the 20th century. ... The Grumman F10F Jaguar was a prototype swing-wing fighter aircraft offered to the US Navy in the early 1950s. ... The McDonnell Aircraft Corporation was an American aerospace manufacturer, based near St. ... The McDonnell F3H Demon was a US Navy carrier-based jet fighter aircraft. ... The Douglas Aircraft Company was founded by Donald Wills Douglas, Sr. ... F4D Skyray The Douglas F4D Skyray was a carrier-based fighter built by the Douglas Aircraft Company. ... The Douglas A-3 Skywarrior was a strategic bomber built for the United States Navy, and among the longest serving; it entered service in the mid 1950s and was not retired until 1991. ...


Unfortunately, development of the big engine was protracted. The all-important 150-hour qualification test that was to have been accomplished in December 1949 was not completed until January 1951, a year behind schedule. The afterburner was particularly troublesome – the afterburner version, the J40-WE-8 did not pass its 150-hour qualification until August 1952. As a result, engines were delivered without afterburners, causing delays in the fighter flight test programs.

The J40 never did become operational, the program being terminated at some point in 1955. All the aircraft it was to power were either canceled or used alternative engines.


  Results from FactBites:
Westinghouse (112 words)
Westinghouse Electric was one of the world's largest steam turbine manufacturers when they were asked to participate (along with General Electric and Allis Chalmers) in the development of a U.S. turbojet.
The first Westinghouse engine was the 19A axial turbojet which first flew in 1944.
In 1953, Westinghouse agreed to collaborate with Rolls-Royce.
Douglas XF4D-1 Skyray (1303 words)
The engine was to be the afterburning Westinghouse J40 turbojet, which was the powerplant of choice for the next generation of high-performance Navy aircraft such as the McDonnell F3H-1 Demon, the Grumman F10F Jaguar, and the Douglas A3D Skywarrior.
Westinghouse XJ40-WE-6 engine that was intended for the XF4D-1 had experienced serious development delays and was not yet ready for flight.
It was a good thing that this decision to replace the J40 was made, because the J40's problems proved to be insoluble, and the entire J40 program had to be cancelled.
  More results at FactBites »



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