NACELLE JET PIPE DEVICES FOR REGULATING PRESSURE

摘要

A nacelle jet pipe is equipped with a device for regulating the pressure of a flow of air leaving the jet pipe. The device includes an annular element surrounding the downstream end of the jet pipe, and an adjuster to adjust the position of part of the annular element in relation to the downstream end of the jet pipe. In particular, the annular element forms, with the downstream end of the jet pipe, a constricted zone the widest part of which is situated upstream of the narrowest part and the profile of which can be varied according to the position of the annular element.

主权项

1. A secondary stream outlet nozzle of a bypass turbojet engine comprising a device for regulating pressure of an air flow at an outlet of the nozzle, said device comprising:
an annular element surrounding the downstream end of the nozzle and at a distance therefrom; and means for adjusting a position of at least one portion of the annular element with respect to the downstream end of the nozzle, wherein the annular element forms, together with the downstream end of the nozzle, a pinch area, a most flared portion of which is located upstream of a narrowest portion thereof, and a profile of which varies depending on a position of the annular element.