降低战略导弹助推段高度的初步研究

美国SDI计划的“多层拦截”中,“助推段拦截”是最主要的一层。降低导弹助推段飞行高度,利用稠密大气层使其免受攻击,是公认的有效的反拦截措施。本文分析了降低助推段高度的困难,并对一个假想的起飞质量为30,000kg的三级固体洲际导弹采用不同方法降低助推段高度进行了初步研究。定量分析表明,将Ⅱ,Ⅲ级燃烧时间缩短一半,从20km以上高度快速推进,可能在导弹飞行条件不太恶化、有效载荷损失约10％的条件下,使导弹熄火高度控制在80～90km.而实现此目的的工程条件,经过一定努力是可以具备的。

PRELIMINARY RESEARCH ON THE LOWERING BURN-OUT ALTITUDE OF STRATEGIC MISSILE

In the "multiple layer intercept" system of the SDI progarm of USA. The "boost phase intercept" is the most essential layer,It' s believed that is an effective counter-intercept measure for lowering burn-out altitude of the missile in the dense atmosphere to prevent it from being attacked.This paper will analyze some difficulties in lowering the burn-out altitude,and make a preliminary research on some different methods to lower the burn-out altitude of a supposed three-stage solid ICBM with a take-off mass 30,000kg,the quantitative analysis shows that the burnout altitude of missile can be controlled within 80-90km,under the condition that the flight condition of the missile is not worse and the loss of playload is about 10% if the burning time of the second and third stage is cut by half and the propulsion is speed up over the altitude 20km, and the engineering condition to achieve this goal can be provided with by making certain efforts.