A Plug Cone Mechanism Realizing Omnidirectional Vector Adjustment of Axisymmetric Nozzle

Abstract

The invention discloses a tapered plug mechanism realizing the axial symmetry spray pipe all-direction vector regulation. The tapered plug mechanism comprises a tapered plug front section, a tapered plug back section, a support frame, an actuator cylinder, a rotating rod, a connecting rod and an actuator cylinder, wherein the tapered plug front section and the tapered plug back section form a center taper structure, the sectional surfaces in the contact positions of the tapered plug front section and the tapered plug back section are concentric spherical surfaces, the tapered plug front section and the tapered plug back section are connected through a rotating pair vertical to the axial line of a spray pipe, in addition, the concentric spherical surfaces of the tapered plug front section and the tapered plug back section passed by the rotating pair are connected for realizing the vector regulation of the fuel gas flow of the spray pipe, meanwhile, the shielding effect on front end heat end components can be realized, the support frame is used as a support component of the center taper structure formed by the tapered plug front section and the tapered plug back section for connecting the center taper onto a tube body of the spray pipe, and the center taper realizes the vector rotation in an all-direction 360-degree range. The tapered plug mechanism has the advantages that the structure is simple, the moving components are few, the outline dimension of the traditional axial symmetry plug type spray pipe can be effectively reduced, and the all-direction vector regulation of the axial symmetry spray pipe can be realized.

Description

technical field [0001] The invention relates to the field of aeroengine nozzles, in particular to a plug cone mechanism for realizing omnidirectional vector adjustment of an axisymmetric nozzle. Background technique [0002] The central cone of the traditional axisymmetric plug nozzle is connected to the barrel of the nozzle through a fixed connection, while the realization of vector adjustment designs the barrel as two spherical segments, which are driven by the actuating system and the connecting mechanism. Segmented spherical segment realizes vector adjustment. The nozzle with this structure has a larger outer dimension and heavier weight. It is not easy to realize the engine with strict outer dimension requirements; while the traditional axisymmetric vector nozzle has many moving components and the control law It is more complicated, and because there is no shielding of the front-end hot-end component by the central cone, the infrared stealth ability of the axisymmetric ...

AI Technical Summary

Problems solved by technology

[0002] The central cone of the traditional axisymmetric plug nozzle is connected to the barrel of the nozzle through a fixed connection, while the realization of vector adjustment designs the barrel as two spherical segments, which are driven by the actuating system and the connecting mechanism. Segmented spherical segment realizes vector adjustment. The nozzle with this structure has a larger outer dimension and heavier weight. It is not easy to realize the engine with strict outer dimension requirements; while the traditional axisymmetric vector nozzle has many moving components and the control law It is more complicated, and because there is no central cone to shield the front-end hot-end components, the infrared stealth ability of the axisymmetric vector nozzle is low

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