本科毕业摘要修改!(修改英文即可)

灞曞紑鍏ㄩ儴In this paper, including a four-part, the main thrust vector technology is part of the study, regular nozzle simplified model of technology research and vector engine nozzle and the matching problem, first of all, the first chapter on the thrust vector technology research, introced the thrust vector technology development Principle and the application process and the thrust vector technology on the flight after the impact, the final note for the Study of the vector thrust vectoring nozzle in the application of technology, the establishment of vector nozzle simplified model of the need.
Second, it is appropriate nozzle on the simplified model of technical studies, first without loss of the nozzle deflection start modeling, in Laval nozzle of the air flow within the state, the establishment of axisymmetric nozzle to expand - the mathematical model And then extended by the nozzle model - to calculate the vector nozzle modeling need some parameters, and launch accession to the deflection angle after some other parameters, the establishment of vector nozzle simplified model.
Finally, on a deflection of the vector nozzle engine work, from the H = 0km, M = 0 point of the design study on the vector angle of deflection relative thrust engine, high-pressure relative speed, low relative speed fan surge margin , The compressor surge margin, than the tail nozzle pressure, thrust coefficient, flow coefficient, effective vector angle parameters such as the impact. Then with the other two in the state, compared to the situation and come to different height and vector angle deflection at Mach number of parameters of the engine. Show that the vector nozzle in the all-inclusive model line within the scope of adaptation.

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