针对机载发射的空地导弹最小射程 ,把发射后的空地导弹看作一个受重力作用、推力等于阻力并具有水平初速的下滑飞行体 ,提出了一种估计方法并编制了计算机软件 ,对影响空地导弹最小射程的主要因素进行了量化分析。研究结果表明 ,空地导弹的最小射程由启控时机、载机初速、投放高度、下滑高度差及末制导最小距离等因素决定。该方法已用于某型空地导弹总体设计方案的分析与评估 Aiming at the minimum range of air-to-air missiles launched by airborne, the air-to-ground missile after launching is regarded as a gliding flying body under the action of gravity and thrust equal to the resistance and horizontal muzzle velocity. An estimation method and computer software are developed. Missiles minimum range of the main factors were quantified. The results show that the minimum range of air-to-ground missiles is decided by such factors as the timing of start-up, the initial speed of carrier aircraft, the launch height, the difference of sliding height and the minimum distance of final guidance. The method has been used to analyze and evaluate the overall design of a certain type of SAM