针对探月返回器再入演示验证试验,提出火箭加上面级的发射轨道设计方案,由上面级两次点火工作满足返回器分离点的轨道参数要求,进而模拟返回器再入条件.采用这种轨道方案,任务飞行时间由原方案的10天缩减为28 h,降低了任务复杂程度,为模拟探月返回器再入条件提供了另一种可供选择的方案.%A launch trajectory design scheme using launch vehicle and upper stage is proposed to cope with the requirements of reentry demonstration of lunar return vehicle. In this scheme, the main engine of the upper stage will be ignited two times to satisfy the orbit requirements for the return vehicle at the separation point, and then simulate the reentry conditions. According to this strategy, the duration of the whole mission is cut down from ten days to 28 hours , and the complexity of the mission is reduced, which provide another scheme for the reentry demonstration of lunar return vehicle.
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