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本文给出了适合迫弹大攻角运动的微分方程组,应用数值积分法计算了各种干扰因素对迫弹弹道的影响.从计算结果可以得到:在通常的线性气动力、力矩作用下,迫弹不会发生近弹:如果迫弹在高空遇到较大的横向阵风.在非线性偏航力矩和赤道阻尼力矩作用下迫弹可能发生近弹.本文根据风洞试验结果和大攻角气流分离理论较好地解释近弹产生的原因及其伴随的各种现象.
In this paper, the differential equations for the large angle of attack of the projectile are given, and the influence of various disturbing factors on the projectile trajectory is calculated by the numerical integration method. From the results of the calculation, it can be got that under the action of usual linear aerodynamic force and moment, Projectile will not occur near miss: If the projectile encounters a large horizontal gust at high altitude, it may happen that the projectile is near-miss according to the nonlinear yaw moment and the equatorial damping moment. According to wind tunnel test results and large angle of attack The theory of gas flow separation can better explain the reason of near-miss and the accompanying phenomena.