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THRUST VECTORING APPARATUS FOR A JET ENGINE, CORRESPONDING JET ENGINE, THRUST VECTORING METHOD AND UPGRADING METHOD FOR A JET ENGINE
THRUST VECTORING APPARATUS FOR A JET ENGINE, CORRESPONDING JET ENGINE, THRUST VECTORING METHOD AND UPGRADING METHOD FOR A JET ENGINE
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机译：喷气发动机的推力矢量装置，相应的喷气发动机，喷气发动机的推力矢量方法和升级方法
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摘要
The thrust vectoring apparatus comprises: a housing defining a primary outletfor emitting the primary jet; Coandasurfaces extending from opposing regions of said housing, and radially spacedfrom the primary outlet such that a step is definedbetween each Coanda surface and the primary outlet; ducts leading from a fluidsource to secondary outlets; and flow controlmeans operable to control the mass flow through the secondary outlets. Whenthe jet engine operates to exhaust a primary jetthrough the primary outlet, low pressure regions are formed in the vicinity ofthe steps. Each secondary outlet is located adjacentone of the Coanda surfaces so as to emit a secondary flow into a low pressureregion. On activation of the secondary flow by theflow control means, the primary jet is entrained by the Coanda surfaceopposing the Coanda surface adjacent said the secondaryoutlet from which the secondary flow has been emitted. Method of vectoring thethrust or of upgrading existing jet engines withthe thrust vectoring apparatus and jet engines comprising the thrust vectoringapparatus are disclosed
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