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相对于地面垂直发射运载火箭,空射运载火箭具有点火姿态可变的优点,不同的点火姿态对火箭的飞行弹道有显著影响,从而引起运载能力的变化。本文采用一个适用于空中发射的飞行程序角,在不同的点火俯仰角下对空射运载火箭的飞行弹道进行了优化,并对得出的优化结果进行了比较分析。研究结果表明,倾斜点火的方案既能避免大攻角飞行造成的载荷问题,又能提高运载能力。
Compared with launching launch vehicle vertically on the ground, the air-launched launch vehicle has the advantage of variable ignition attitude. Different ignition attitude has a significant impact on the flight trajectory of the rocket, which causes the change of carrying capacity. In this paper, a flight program angle suitable for air launch is used to optimize the flight trajectory of air-launched launch vehicle at different firing pitches, and the optimized results are compared and analyzed. The results show that the inclined ignition scheme not only can avoid the problem of load caused by high angle of attack flight, but also can improve the carrying capacity.