Design of Integrated Flight/Vectored Nozzle Control System at Take-Off
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摘要: 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.Abstract: Four kind of configurations are adopted to analyze the improvement of the vectored nozzle control on the flight performances at take-off,where the baseline aircraft is modified to add the horizontal canard or/and vectored nozzle. The models of the aircraft longitudinal motion at the different progresses of the take-off are established. The system controllers of the integrated flight/vectored nozzle control system at take-off are respectively designed according to the configurations. The simulations of the aircraft at take-off are made on the established models and nonlinear propulsion system model. The results prove that the designed system controllers are available to implement the take-off mission. The major specifications prove that the vectored nozzle control can significantly improve the flight performances at take-off when appropriately coordinated with the aerodynamic control effectors.
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Key words:
- flight control systems /
- thrust vector control /
- performance analysis
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1 .张明廉飞行控制系统北京:国防工业出版社,1982 2. Gal-or B Fundamentals and similarity tansformations of vectored aircraft Journal of aircraft,1994,31(1):181~187 3. Gal-or b The fundamental concepts of vectored propulsion Journal of Propulsion and Power,1990,6(6):747~757 4. 姜正行飞机内流空气动力学北京:航空工业出版社,1989 5. Shaw P, Haiges K, Skira C Validation of an integrated flight and propulsion control design for fighter Aircraft.AIAA-87-1928,1987 6. Shaw P, skira C Development and evaluation of an integrated flight and propulsion control system.AIAA-85-1423,1985
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