飞行器离轨瞬间,它的重心相对于导轨的速度叫相对离轨速度(V_(OTH))。为了计算这一速度,必须知道导轨长度,发动机推力随时间变化的规律(R=f(t)——起飞发动机的推力,P=f_1(t)——主发动机的推力),飞行器质量变化规律(m=f_2(t))。通常,在计算轨上运动段时,略去空气动力对飞行器的影响,飞行器的重心运动方程可以 The moment of de-alignment of the aircraft, its center of gravity relative to the speed of the guide rail is called the relative off-track speed (V_ (OTH)). In order to calculate this speed, the length of the guide rail and the thrust of the engine over time must be known (R = f (t) - thrust of takeoff engine, P = f_1 (t) - thrust of main engine) (m = f_2 (t)). In general, when calculating the motion segments on rails, the influence of aerodynamics on the aircraft is omitted and the equation of motion of the center of gravity of the aircraft can be