运载火箭末级离轨控制策略优化

Optimization of the De-orbit Control Strategy for the End Stage of Launch Vehicle

面对日益严重的空间碎片和空间环境问题,优化某新一代运载火箭末级离轨控制策略,以减少长期在轨空间碎片的产生。在星箭分离至一定安全距离后,充分利用箭上剩余能源,通过优化调整箭体姿态、推进剂排放时间编排等重要参数,尽可能地降低末级箭体的近地点高度。验证结果表明使用优化后的策略可有效缩短运载火箭末级的在轨寿命,确保星箭分离安全,且简单、可靠,对中国空间碎片减缓技术的研究有重要参考价值。

In view of the increasingly serious problems of space debris and space environmental,a de-orbit control strategy for the end stage of a new generation launch vehicle is optimized to reduce the generation of long-term space debris in orbit.After the satellite is separated to a safe distance,the remaining energy of the launch vehicle is fully utilized to reduce the perigee height of the end stage by optimizing the program angle and the time arrangement of propellant discharge.The verification results show that the optimized strategy can effectively reduce the in-orbit life of the end stage of the launch vehicle,ensure the safe separation of satellite and launch vehicle,and is simple and reliable,which has important reference value for the research of space debris mitigation technology in China.