Mechanical-pneumatic composite thrust vectoring nozzle with short-distance/vertical take-off and landing functions

Abstract

The invention discloses a mechanical-pneumatic composite thrust vectoring nozzle with a short-distance / vertical take-off and landing functions. The mechanical-pneumatic composite thrust vectoring nozzle comprises a pneumatic steering section and a mechanical steering section. The pneumatic steering section comprises an axisymmetric / quasi-axisymmetric throat offset type pneumatic thrust vectoring nozzle and a transition section. The mechanical steering section comprises a cylinder A, a cylinder B, a bearing A and a bearing B. Along the flow direction of fluid, the cylinder A, the bearing A, thecylinder B, the bearing B, the transition section and an inlet of the axisymmetric / quasi-axisymmetric throat offset type pneumatic thrust vectoring nozzle are connected in sequence. Through relativerotation of the two bearing mechanisms and the pneumatic steering effect of the throat offset type pneumatic thrust vectoring nozzle, the function that airflow deflection exceeds 90 degrees under thecondition that a mechanical structure does not deflect by 90 degrees is achieved, attitude control can be conducted through the pneumatic thrust vectoring nozzle in a hovering state, and the continuous change of key parameters such as lift force, thrust and vector angle of a whole exhaust system is assisted. The nozzle has the characteristics of simple structure, relatively few movement mechanismsand the like.

Description

technical field [0001] The invention relates to a mechanical-pneumatic composite vectoring nozzle with short-distance / vertical take-off and landing functions, and belongs to the technical field of advanced thrust vectoring nozzles of aero-engines. Background technique [0002] With the development of science and technology and the urgent needs of practical applications, short-distance / vertical take-off and landing aircraft have once again entered people's field of vision. The structure of the traditional ST / VTOL nozzle is complex, and the mode switching process is difficult to control and difficult to maintain. Therefore, it is necessary to develop a STOL / VTOL exhaust system with simple structure, light weight, good performance, and meeting the needs of high-speed flight. [0003] At present, the fluid thrust vectoring nozzle has gradually become the research focus and research focus of various countries due to its simple structure and light weight, and will enter engineeri...

AI Technical Summary

Problems solved by technology

The structure of the traditional STOL / VTOL nozzle is complex, and the mode switching process is difficult to control and difficult to maintain

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