送交者: steven 于 2005-11-28, 22:45:30:
Found a very interesting article about Russia's Topol M ICBM, here it says: "据披露，本月初试射的“白杨”导弹能在5倍音速下作变轨飞行，具有很强的突防能力和攻击精度。因为它大部分时间不按抛物线运行，而是沿着稠密的大气层边缘近乎水平飞行，这使得敌方的导弹防御系统无法准确预测它的飞行轨道。" I really want to know how any object can defy the law of gravity, and fligh "near horizonally" at the edge of atmosphere.