ice situation meaning in English

冰情

Ice situation and trend over preceding 3 hours
-过去三小时内海冰的情况及趋势
Several icing parameters were imported to calculate the change of drag coefficient and typical derivatives between clean aircraft and iced aircraft , and the aircraft flight envelope change of iced and un - iced situation was computed , and the small disturbance flight dynamics model was modified to study the effect of the ice accretion on the aircraft dynamics by importing the ice parameter to it , and the longitudinal and lateral stability and the elevator , aileron and rudder step response were also studied and simulated
根据这些参数计算了飞机结冰后阻力系数以及典型气动导数的变化，并计算了结冰前后飞机的飞行包线；同时对结冰前后飞机的纵向、横侧动稳定性以及升降舵、副翼和方向舵阶跃操纵响应进行仿真计算。