本科毕业摘要修改!(修改英文即可)

来源：百度知道 编辑：UC知道 时间：2024/05/20 12:01:40
本文包括了四部分，主要部分是推力矢量技术的研究、适量喷管简化模型技术研究以及矢量喷管与发动机的匹配问题，首先第一章是关于推力矢量技术的研究，介绍了推力矢量技术的发展过程和原理以及应用推力矢量技术后对飞行产生的影响，最后说明为研究在矢量喷管中应用推力矢量技术，建立矢量喷管简化模型的必要性。
其次，是关于适量喷管简化模型技术研究，先由不带失量偏转的喷管入手建模，分析了在拉瓦尔喷管内各种气流流动状态，建立轴对称收_扩喷管的数学模型；然后由收_扩喷管模型计算出矢量喷管建模所需要的一些参数，以及推出加入偏转角后的另一些参数，建立矢量喷管简化模型。
最后，研究了矢量喷管偏转对发动机工作的影响，从在H=0km,M=0的设计点研究，研究了矢量角偏转对发动机相对推力、高压相对转速 、低压相对转速风扇喘振裕度、压气机喘振裕度 、尾喷管压比、推力系数、 流量系数、有效矢量角等参数的影响。接着通过与在其他两个状态点的情况相比较，得出不同高度与马赫数时矢量角偏转对发动机参数的影响。验证了该矢量喷管模型在全包线范围内的适应性。

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, introduced 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 tech

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, introduced 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 d