航天器的再入走廊及其计算方法

THE REENTRY CORRIDOR OF SPACE VEHICLE AND THE CALCULATION METHOD

首先定义了航天器的再入走廊,根据提出的一种新的Loh模型与再入走廊的定义,详细地推导出了再入走廊各边界的计算公式,并证明了两种侧向走廊的数学描述是等价的。计算了以美国航天飞机为模型的再入走廊。最后还对影响再入走廊宽度的因素(如再入初始参数、飞行器升阻比、飞行器表面的耐热材料,所能忍耐的动力学环境等)作了分析。

The reentry corridor of space vehicle is defined. Using a new Loh's hypothesis and the above definition, this paper deduced the calculation formulas of the Loundaries of the longitudinal corridor. The two kinds of crossrange corridors are proved as consistent. The reentry corridor of American Space Shuttle is calculated. This paper also discusses the factors which affect the corridor width, such as the initial parameters of reentry trajectory, the lift-to-drag ratio, tempressure restraint, pressure and load restraint.