负升力返回时航天器的再入走廊与轨迹研究

Reentry Corridor and Trajectory of Space Vehicle Using Negative Lift

研究了较大升阻比航天器采用负升力返回时的再入走廊与最优轨迹，通过数字仿真并与正升力再入时的结果比较，得到结论：采用负升力再入时的返回走廊前１／３段比采用正升力的相应部分宽度有较大增加；离轨点所耗燃料质量与热防护系统质量之和较正升力再入时的情况有一定减少。由此可见，负升力再入概念在提高有效载荷上明显优越于正升力再入概念。

The paper studied the corridor and trajectories of space vehicles usingnegative lift. Numerical results are obtained for the corridors and trajectories using negative and positive lift, respectively. Then the conclusions are obtained as: The first onethird reentry corridor of space vehicle with large lift drag ratio using negative lift iswider than the one using positive lift; the total mass cost (TMC ) by negative lift issmaller than the one by positive lift, where TMC is the total mass of the fuel consumption for the vehicle to deorbit from the mission orbit and Thermal Protection System ofthe vehicle. Therefore, the concept of return flight using negative lift is superior to theone using positive lift.