发动机推力偏心对地面发射火箭弹射程的影响

Effect of the Rocket Missiles′ Range in Ground Launch Test Due to Rocket Thrust Eccentricity

从理论上分析了发动机推力偏心对地面发射火箭弹射程的影响,并编写了计算程序,给出了计算结果。理论分析和数值计算显示,在发动机推力偏心客观存在的情况下,如果火箭弹地面发射时的仰角取得过小,将可能导致导弹提前坠地,达不到实验的目的。对于静稳定度低的导弹或者在低温下发射导弹,这个问题将会变得更加突出。为了避免地面发射火箭弹的射程太近的现象,必须对火箭弹地面发射的最小仰角进行限制。

An effect of the rocket missiles＇ range in ground launch test due to rocket thrust eccentricity is introduced in theory, and a computer program and the computing result are given. The theoretical analysis and numeric calculation show that in case of the thrust eccentricity, the rocket missile may fall to the ground for the small pitching angle in ground launch test. This problem would be more serious when the missile＇s stability is lower or the ambient temperature is lower. At last, it is pointed out that the minimum pitching angle must be restricted to avoid the short range in ground lanuch test.