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- Hot_start abstract "In aviation, a hot start is an adverse effect of a reaction engine being improperly started.In a jet engine - be it a pure jet, a turbofan or a turboprop - a great amount of the air ingested by the engine runs around the combustion chamber or around its flame, instead of being mixed with fuel and burned. The purpose of this air is to keep the temperature of the chamber within its limits. If it weren't for this cooling effect, the chamber would get too hot because of the combustion, and it would then be burned or even melted.In a turbofan, the engine is started when compressed air is blown through its high-pressure stages. In a turboprop, the engine is started by the starter-generator, which is the engine's own electric generator - during the start, an electric current runs through it, making it spin, and then making the whole engine turn. In both cases, the engine must be already spinning before igniting the fuel, so as to have the compressors attain enough speed to draw air and make it flow though the engine. When there is a sufficient amount of air flowing, the fuel is injected, and then the engine will be able to run by itself.The critical part is injecting the fuel. If the fuel is ignited before there is enough air flowing around the chamber, its temperature will increase dramatically and exceed the design limits of the combustion chamber and turbine blades, thus causing a failure. This condition is known as a hot start.In some modern jet engines FADEC system prevents such condition from occurring. When FADEC is not present the flight crew has to monitor the engine parameters and manually shut off the fuel valve if the exhaust temperature exceeds its maximum allowed value.".
- Hot_start wikiPageID "30661856".
- Hot_start wikiPageLength "2052".
- Hot_start wikiPageOutDegree "10".
- Hot_start wikiPageRevisionID "645298984".
- Hot_start wikiPageWikiLink Aviation.
- Hot_start wikiPageWikiLink Category:Aircraft_propulsion_components.
- Hot_start wikiPageWikiLink Combustor.
- Hot_start wikiPageWikiLink Electric_generator.
- Hot_start wikiPageWikiLink FADEC.
- Hot_start wikiPageWikiLink Fuel.
- Hot_start wikiPageWikiLink Reaction_engine.
- Hot_start wikiPageWikiLink Turbofan.
- Hot_start wikiPageWikiLink Turbojet.
- Hot_start wikiPageWikiLink Turboprop.
- Hot_start hasPhotoCollection Hot_start.
- Hot_start wikiPageUsesTemplate Template:Aviation-stub.
- Hot_start wikiPageUsesTemplate Template:Reflist.
- Hot_start subject Category:Aircraft_propulsion_components.
- Hot_start hypernym Effect.
- Hot_start type Article.
- Hot_start type Disease.
- Hot_start type Article.
- Hot_start type Component.
- Hot_start comment "In aviation, a hot start is an adverse effect of a reaction engine being improperly started.In a jet engine - be it a pure jet, a turbofan or a turboprop - a great amount of the air ingested by the engine runs around the combustion chamber or around its flame, instead of being mixed with fuel and burned. The purpose of this air is to keep the temperature of the chamber within its limits.".
- Hot_start label "Hot start".
- Hot_start sameAs Hot_start_(aéronautique).
- Hot_start sameAs m.0g9zlxy.
- Hot_start sameAs Q5910841.
- Hot_start sameAs Q5910841.
- Hot_start wasDerivedFrom Hot_start?oldid=645298984.
- Hot_start isPrimaryTopicOf Hot_start.