57—2航箭超前问题分析

Analysis for 57-2Rockets Overshooting

分析了某型外贸机空对地发射５７－２航箭射导弹着点超前的基本原因，并从工程实践出发，提出了解决超前问题的新思路。其基本设想是在武器瞄准方程计算火箭弹道的初始条件中加入一个火箭爬升角增量和火箭虚拟速度增量，使计算弹道逼近实际弹道，避免了重新修正火箭阻力函数，重新计算弹道及弹道拟合的周期长、费用高的常规办法。进而在此基础上修改了平显软件。经验证试飞，获得满意结果。

This article analyses overshooting reason of firing 57-2tockets byone aircraft and from the eng ineering practice point of view,advances new thing king ofovershooting solution。 The assumption increase climb and velocity of rockets in initialcondition of auning equation for calculating rocket balistics ,so as to make the caculatedbalistics f1t the true balistics,thus avoiding hig her cost and long er time required by theconventional method of revising resistance function ,Recalculating balistics and Refit-ting.The modified HUD software and life firing test results are satisfactory.