送交者: steven 于 2006-4-04, 13:18:07:
回答: 省掉了发射升空的时间，而升空占整个飞行时间的大部分 由 deadmeat 于 2006-4-04, 08:14:11:
complete round to come back. If the target is in a different plane, you need to first change plane which may take a complete round, then get to the reentry point. This takes hours to complete. There is no benefit. Besides, the ICMB reentry body travals in hypersonics, and you don't need much guiding. The design of ICBM warheads and spaceships are very different, although they are both reentry vehicle. Warhead descends fast, and it is usually smaller, as stratigic weapon, it doesn't have to be very accurate, and you don't want to preserve the warhead. The sphere-cone design is the prefered shape for morden warhead Reentry Vehicle (RV), and it doesn't need much guiding system. For guided warhead, use cruise missile.