The Design And Optimization On The Structure Of Dual Thrust Vectoring Nozzle

In order to achieve the superiority in the air in the modern battlefield, It is very necessary for us to improve the technical and tactics capability of the fighter in the design.The paper designed a dual-engine thrust-vectoring nozzle based on a certain type of the specific working conditions of the engine, the engine nozzle design will be a compose of the conductance, adjust board and the control board. The nozzle structure is good at simple structure, low cost, small engine changes, easy-to-use, and the system's reliability, high maintainability. The paper analysed the various components of the nozzle by using the finite element software and get the character of the composing part。The diversion of the displacement and the stress distribution is different with the distribution of traditional axial-flow nozzle, particularly the largest displacement of a great changes have taken place here。The paper dealing with a thicker and enhanced box on the diversion of local sites, the diversion of the maximum displacement and stress distribution has improved and reduced,the biggest stress and the maximum displacement position has also undergone a change, by improving the implementation of the programmer, the structure can meet the need of the engine on airflow and the safety requirements of the aircraft. This paper designed the control board as a diversion of the triangular and rectangular plates, to take into account the specific working conditions to prevent the emergence of the phenomenon wingtips stall, the United States aircraft reference to the dual thrust vectoring nozzle design。The paper analyse the control board composed of different width heights of the rectangular plates and triangular plate, get the greatest stress and displacement distribution of the control board, then we get the optimized design .