弹道式导弹再入飞行器携带核弹头。再入飞行器设计成能使导弹再入地球大气层时伴生的风和大气密度等这样一些环境因素的影响减小到最低程度,而导弹的速度与精度只稍为有所减小。假定弹道为完整的弹道式轨道,如果再入效应不考虑,则再入飞行器理论上能达到,的总精度为:圆概率误差(CEP)小于250英尺。 Ballistic missile reentry aircraft carry nuclear warheads. Reentry vehicles are designed to minimize the effects of environmental factors such as wind and atmospheric densities associated with the reentry into the Earth’s atmosphere, while the missile’s velocity and accuracy are only slightly reduced. Assuming that the trajectory is a complete ballistic orbit, the re-entry vehicle theoretically achieves a total accuracy of less than 250 feet CEP if the re-entry effect is not taken into account.