초록 ▼

A nonaxisymmetric, variable area, exhaust nozzle is provided with thrust vectoring capabilities in one plane. The nozzle incorporates an upper, thrust vectoring flap to control direction of thrust over various flight conditions, and a lower, area control flap that is pivoted to modify size and locat

A nonaxisymmetric, variable area, exhaust nozzle is provided with thrust vectoring capabilities in one plane. The nozzle incorporates an upper, thrust vectoring flap to control direction of thrust over various flight conditions, and a lower, area control flap that is pivoted to modify size and location of the nozzle throat. The structural aspects of this nozzle provide a unique capability to vector thrust up to 60 degrees while changing the nozzle throat position to a region downstream of the vectoring of the exhaust gases.

대표청구항 ▼

An improved nonaxisymmetric exhaust nozzle for vectoring exhaust gas flow of a gas turbine engine comprising: an upper wall partially defining an exhaust stream flowpath; a first articulated exhaust stream deflector means forming a downstream portion of the upper wall; said deflector means comprisin

An improved nonaxisymmetric exhaust nozzle for vectoring exhaust gas flow of a gas turbine engine comprising: an upper wall partially defining an exhaust stream flowpath; a first articulated exhaust stream deflector means forming a downstream portion of the upper wall; said deflector means comprising a variable position thrust vectoring flap that pivots about an upstream fixed duct portion at a position along the fixed duct of generally lesser internal flowpath area and is adapted to deflect and turn the exhaust stream to selected angles relative to engine axial direction; and a lower wall substantially opposed to the upper wall and further defining the exhaust stream flowpath; a second articulated exhaust stream deflector means forming a downstream portion of the lower wall; said second deflector means comprising a variable position control flap operatively connected to a fixed duct portion and cooperating with the deflector means to form a variable position throat therebetween wherein said throat is disposed downstream of the exhaust gas turning when the vectoring flap is in a deflecting mode, wherein the improvement comprises: an improved control flap having a lower surface defining the exhaust stream flowpath, an upper surface exposed to a pressurized cavity for the purpose of allowing pressure forces on said upper surface to offset pressure forces from the exhaust stream on the lower surface thereby forming a pressure vessel within said control flap.