飞机反区时的操纵策略特性及物理机理研究

针对飞机在低动压飞行(如着舰)时处于阻力曲线反区所采用的Frontside操纵和Backside操纵方式,分别从指令控制、风扰抑制、执行机构影响三种情况对两种操纵策略的性能进行了仿真比较,得出相关结论,并分析了其内在物理原因。研究结果表明,Backside操纵性能优于Frontside操纵,具有响应快、超调小、无初始负调、抗风鲁棒性强,以及俯仰角、迎角和升降舵变化小等特点,但同时速度和推力变化大,且执行机构相位滞后对Backside操纵性能影响较大。

Study on control strategy characteristics and physical mechanism of the aircraft in backside area

In view of the Frontside control strategy and Backside control strategy which are used in aircraft's drag curve's backside area flying in low dynamic pressure such as carrier landing,the performance of the above two kinds of control strategies are simulated and compared,from the three situations:command response,wind disturbance suppression and actuator influence.The relative conclusions are obtained,and the inner physical reasons behind these phenomena are analyzed.Study results show that Backside control strategy is better than Frontside control strategy in control performance.The Backside control strategy has the features of rapid response,small overshoot,no initial undershoot,strong robustness,small change in pitch angle,AOA,elevator,it also has a large change in speed and thrust,and the phase lag of the actuators has a great influence on it.