某组合动力验证机上升段轨迹设计技术研究

Study on Trajectory Design Technology of Ascent Phase of a Combined Power Vehicle

为解决组合动力验证机上升段轨迹设计技术问题,采用分段式轨迹设计方法。以任务窗口条件为初始状态,根据不同的高度-迎角剖面逆向求解无动力段起点的状态,得到无动力段轨迹簇,以验证机起飞点为初始状态;根据不同的时间-迎角剖面正向解算有动力段末点状态,得到有动力段轨迹簇;通过对比有无动力两段的轨迹簇,择优选取其中各状态量交接最好的两段轨迹合成得到上升段标称轨迹,并通过仿真验证了上升段轨迹的鲁棒性。

A segmented trajectory design method is adopted to solve the problem of trajectory design in the ascending section of the combined power vehicle.Taking the task window as the intial state,the initial state of the unpowered section is reversely solved on the basis of different height-angle of attack sections,and the trajectory cluster is obtained.Taking the take-off point as the initial state of the powered section,the final state is calculated forward according to different time-angle of attack profiles,and the trajectory cluster was obtained.By comparing the trajectory clusters of the two sections,the best connection of each state quantity are selected to synthesize the nominal trajectory of the ascending segment,and the robustness of the ascending segment trajectory is verified by simulation.