大升力体空间再入敏捷轨道机动方法研究

Research on Agile Reentry Method for Maneuvering Vehicle

针对高超声速空间再入飞行器的大范围轨道机动方法进行研究,基于飞行器能量平衡策略使用气动辅助的方式开展空间轨道机动。依靠飞行器的大升阻比特性,提升轨道机动过程中的推进剂创新点使用效率,提高机动能力的同时也降低了飞行器在空间被跟踪观测的风险。使用了基于全系数自适应预测——校正技术的气动辅助制导技术,在保证收敛性的情况下降低了制导导航与控制飞控计算机的运算复杂度,提升了工程使用的可行性和综合效能。通过对环境条件的拉偏仿真,实验结果证明该方法相对于传统空间轨道机动方案,具有更高的机动性并大幅降低了推进剂的消耗。

Alarge-scale orbit maneuver method is proposed and analyzed for hypersonic space reentry vehicles, and the air assisted methods are adopted to conduct space orbit maneuvers by complying with the energy balance strategy of the aircraft. By the L/D ratio of aircraft, the efficiency of the propellant use during orbital maneuvers is elevated, and the maneuverability is also enhanced, while the risk of aircraft being tracked in space can be reduced. Aero-assisted guidance technology is applied based on full-coefficient adaptive prediction-correction technology which significantly simplifies the computation of the GNC computer, while such application ensures the convergence and enhances the feasibility and comprehensive efficiency of computer. Simulation is conducted on the basis of multiple environmental conditions. The experimental results show that the proposed method significantly limits the propellant consumption in comparison with the conventional space orbit maneuvering scheme.