초록

A thrust vectoring exhaust nozzle (6) is provided with a vent bypass (38) and flow control valve (44) to vent a portion (43) of the exhaust gas (2) only during diversion of the exhaust gas (2) into an alternative gas flow path (18).

대표청구항 ▼

In a gas turbine engine having a stream of working fluid exhausted therefrom, said exhausted working fluid entering a nozzle structure having two working fluid discharge paths and means for biasing the flow of working fluid therebetween, said biasing means including means for selectably controlling

In a gas turbine engine having a stream of working fluid exhausted therefrom, said exhausted working fluid entering a nozzle structure having two working fluid discharge paths and means for biasing the flow of working fluid therebetween, said biasing means including means for selectably controlling the discharge flow area of the primary working fluid discharge path and the discharge flow area of the alternative working fluid discharge path such that the alternative discharge path is opened to pass working fluid therethrough only when the flow area of the primary discharge path is less than a preset minimum area, and means, disposed in the alternative discharge path, for selectably vectoring the flow of working fluid passing through the alternative discharge path, said vectoring means having an operating range of orientations and a stowed orientation, the improvement comprising: means, responsive to the orientation of the vectoring means, separate and independent of the alternative discharge path, for venting a portion of the working fluid from the primary discharge path, the venting means being closed to working fluid flow when the vectoring means is in the stowed orientation, and open to working fluid flow when the vectoring means is in at least one of the orientations within the operating range.