高超声速伸缩式变形飞行器再入制导方法

Reentry guidance method of hypersonic telescopic deformable vehicle

针对高超声速变形飞行器再入制导问题,提出了一种采用伸缩式机翼的高超声速变形飞行器外形方案,建立了含有展长变形量的气动模型和动力学模型。将该变形飞行器的展长变形量扩展为控制变量,分析了倾侧角、展长变形量和终端航程、高度之间的关系。在此基础上,利用倾侧角和展长变形量在线预测剩余航程和终端高度,通过数值方法校正2个控制量以满足航程约束和高度约束,通过航向角走廊确定倾侧角符号。仿真结果表明:该变形飞行器再入制导方法制导精度高,相比于传统固定外形飞行器终端约束能力更强、轨迹更加平滑,且在扰动条件下具有一定鲁棒性。

Aimed at the reentry guidance problem for hypersonic deformable vehicle, firstly, a shaping plan of hypersonic deformable vehicle using telescopic wings is proposed, and the aerodynamic model and dynamic model with elongation deformation are established. Secondly, with the elongation deformation being extended to control variables, the relationships between bank angle, elongation deformation and terminal range, altitude are analyzed. On this basis, the remaining range and terminal altitude are predicted by bank angle and elongation deformation, the two control variables are corrected by numerical algorithm to meet the range and altitude constraints, and the bank angle symbol is determined through the heading angle corridor. Simulated results show that the reentry guidance method of the deformable vehicle has high guidance accuracy, having stronger terminal restraint ability and smoother trajectory compared with the fixedshape vehicle, and it has certain robustness under disturbance conditions.