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The turbojet is an airbreathing jet engine which is typically used in aircraft. It consists of a gas turbine with a propelling nozzle. The gas turbine has an air inlet which includes inlet guide vanes, a compressor, a combustion chamber, and a turbine. The compressed air from the compressor is heated by burning fuel in the combustion chamber and then allowed to expand through the turbine. The turbine exhaust is then expanded in the propelling nozzle where it is accelerated to high speed to provide thrust. Two engineers, Frank Whittle in the United Kingdom and Hans von Ohain in Germany, developed the concept independently into practical engines during the late 1930s.
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This article briefly describes the components and systems found in jet engines.
The Anti-Concorde Project, founded by environmental activist Richard Wiggs, challenged the idea of supersonic passenger transport, and curtailed Concorde's commercial prospects. When Concorde entered service in 1976, of the 74 options held at the time of the first flight, only those for the state airlines of Britain (BOAC) and France were taken up, so that only 20 were built, although flights were also flown for Braniff International and Singapore Airlines. It triggered research into the factors affecting the creation of sonic booms, which led to the Shaped Sonic Boom Demonstration which achieved their goal of reducing the intensity of sonic booms, and echoed public concern about aircraft noise that resulted in more restrictive noise limits for aircraft and airport operations, as well as changes in both operating procedures and aircraft design to further reduce noise levels.
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References
- ↑ Flight International April 1964
- ↑ Technologies
- ↑ Flight International October 1976
- ↑ Companies House
- ↑ Flight International September 1949
- ↑ Flight International August 1952
- ↑ Flight International February 1977
- ↑ Flight International January 1959
- ↑ Heritage Concorde
- ↑ Flight International March 1965
- ↑ Times, 8 October 1964
- ↑ Cryogenic Engineering Group
- ↑ OFT
- ↑ British Cryogenics Council
- ↑ "Products" (PDF). Archived from the original (PDF) on 19 June 2018. Retrieved 19 June 2018.
