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执行超低空重装空投任务的大型运输机极易受到扰动风的影响从而威胁飞行安全。根据小扰动线性化方法,从载机安全性出发,提出侧风安全边界的确定方法:载机受扰后的瞬态响应峰值不能过大;稳定飞行时,舵面应能提供足够的操纵力和力矩,以补偿风效应产生的附加气动力和力矩。仿真计算结果表明,该方法对超低空空投条件具有良好的分析预测能力。
Large transport aircraft carrying out the redeployment mission of a ULA are highly susceptible to disturbed winds and threaten flight safety. According to the small perturbation linearization method, the method of determining the safety margin of the crosswind is proposed from the perspective of the safety of the carrier. The peak value of the transient response after the disturbance of the carrier can not be too large. In steady flight, the rudder surface should provide sufficient manipulating force And torque to compensate for the additional aerodynamic forces and moments created by the wind effect. The simulation results show that this method has a good ability of analysis and prediction for the condition of ultra-low-altitude aerial casting.