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通过对背景机加装鸭翼或矢量喷管,采用四种控制方案,研究了矢量喷管控制对飞机起飞性能的改善作用.根据飞机起飞过程,建立了各运动阶段的飞机纵向运动模型.分别设计了各控制方案的综合飞行/矢量喷管控制的综合系统控制律.在已建立的运动模型和非线性推进系统模型上,进行了起飞过程的数学仿真.仿真结果表明,所设计的综合系统控制律较好地完成了起飞任务.主要性能数据表明,矢量喷管与相应舵面协调控制明显改善了飞机的起飞性能.
By adding canard or vector nozzle to background machine, four control schemes are used to study the effect of vector nozzle control on aircraft takeoff performance improvement. According to the take-off process of the aircraft, a model of longitudinal movement of the aircraft at each movement stage is established. The comprehensive system control law of integrated flight / vector nozzle control of each control scheme is designed respectively. On the established model of motion and nonlinear propulsion system, mathematical simulation of take-off process is carried out. The simulation results show that the proposed integrated system control law has completed the take-off mission well. The main performance data show that the coordinated control of the vector nozzle with the corresponding control surface significantly improves the takeoff performance of the aircraft.