Analysis indicates the " low pressure closed reticular flow region " results in the non - equilibrium of pressure along the primary jet ' s orifice . to obtain as large vectoring angle as possible , the optimal ranges of angles , frequencies , velocity amplitudes , and distances from the microjet actuator to the primary jet exit were discussed . the relationship between the vectoring angle of the primary jet and the phase - difference of two adjacent actuators was analyzed 分析了“拉”模型单作动器模式下，微射流作动器的入射角度、驱动频率、速度幅值及与主射流间的距离对主射流偏转程度的影响，并确定了作动器工作参数的最佳范围;分析了“拉”模型双作动器模式下，不同的相位差对主流偏转程度的影响。
The application background of thrust vectoring technology on aircraft and its advantages are analyzed . the main characteristics of some type of vectoring nozzles are discussed , the expression of thrust vectoring force and moment are set up . then , the nonlinear motion equations of aircraft with three axes of thrust vectoring are deduced 本文主要针对推力矢量飞机非线性飞行控制的理论和应用问题进行了一定的探索和研究，进行的主要工作有： 1 、研究了推力矢量在飞机上的应用背景和收益，分析了现有推力矢量喷管的主要形式和特点，给出了推力矢量力、力矩的数学模型，并在此基础上推导了带三轴推力矢量飞机的非线性运动方程，为控制律的设计奠定基础。
And the technology can also control the vector of a primary jet , the ratio of momentum between the synthetic jet and the primary jet is a main influence factor , and the vectoring control of primary jet is also effected deeply by the position and the frequency of actuators 应用合成射流技术可以有效控制宏观低速流流动方向，其控制强度由宏国防科学技术大学研究生院学位论文观流动与合成射流的动量比决定，而合成射流激励器的工作频率以其布置位置对主流的控制效果影响很大。
This article researches on mathematical model of the control mechanism of the thrust - vectoring nozzle . some reasonable simplification methods are used to build this model because the control mechanism is very complication . this model satisfies the real - time and precision requests of the control system 本文通过对矢量喷管控制机构运动规律的深入分析，采用合理的简化方法，对一些隐函数关系进行了显示化处理，建立了矢量喷管控制机构的运动学数学模型，该模型在计算精度和实时性上满足了控制要求。
The main works and contribution of this paper are as follows : 1 . central type finite volume method proposed by jameson a . is investigated and the boundary condition of the method is improved . compared with the testing data it is proved that the program for 3d viscosity steady flow in thrust vectoring nozzle developed is correct and reasonable 研究了jamson提出了中心型有限体积法，并改进了其在边界上的处理，通过验证计算验证了本文发展的矢量喷管三维有粘流动计算程序的正确性。
Required by the realities , backing on processing of engineering drawing and using the technology of oop , this dissertation analyzes and explains the main processes of scanning , discerning and vectoring of engineering drawing including image foregoing processing , the tracking of vectoring , image discerning , following processing and the transforming of image form . the first , presentating several arithmetic and realizing of image forgoing processing , especially analyzes and explains the arithmetic of image thinning processing 本文从实际需要的角度出发，以机械工程图纸的自动输入处理为应用背景，利用面向对象的可视化编程语言visualc + + ，对扫描识别及矢量化过程中的主要环节工程扫描图形的前处理、矢量化跟踪、图形识别、扫描识别后处理及图形格式转换等进行了研究。
