Maneuver trajectory design for hypersonic glide vehicles in dive phase

Abstract

In this paper, a planning approach of maneuver trajectory based on dynamic inversion is proposed, which can greatly improve the penetrability of hypersonic glide vehicles in dive phase. Maeuvering and guiding overloads are combined using a weight coefficient, which is designed as the function of altitude. Enough adjust ability is guranteed at the end of dive phase, and more complex maneuver trajectories are achieved. Firstly, four different modes of maneuver trajectories are realized by coordinating the maneuver in longitudinal and lateral sub-planes, respectively. Dynamic inversion is employed to establish the relationship between the designed trajectory and the needed overload. Secondly, the minimum energy loss is selected as the optimization index, and the optimal overload is obtained based on the maximum principle. the final path angle constraint is also considered in this algorithm. Finally, the maneuvering and guiding overloads are combined using a weight coefficient, and the corresponding angle of attack and bank are obtained. The approach is tested using common aero vehicle-H (CAV-H) model, and the results demonstrate that the method proposed in this paper can realize the maneuver trajectory in dive phase with high terminal accuracy and strong penetration ability.