送交者: steven 于 2005-11-29, 00:42:22:
回答: 带几个微型向量火箭发动机，按程序依次启动实施变轨 由 4U4luC2 于 2005-11-29, 00:09:50:
changing orbit is not like flying a plane, it is not arbitary, especially, what does horizonal means? circular, or tengential? As long as that ICBM come back to earth, it is always parabolic, even after orbital transfer. Otherwise, it either circulates the earth, or escape.