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Method for directly planning reentry trajectory in height-velocity profile
Method for directly planning reentry trajectory in height-velocity profile
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机译:直接规划高度 - 速度配置文件的轨迹的方法
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摘要
A method for directly planning a reentry trajectory in a height-velocity profile includes the following steps: S1, extracting an actual working parameter of an aircraft, setting the maximum value {dot over (Q)}max of a stagnation point heat flux, the maximum value qmax of dynamic pressure, and the maximum value nmax of overload according to the mission requirement, and solving the height-velocity boundary of the reentry trajectory, that is, a lower boundary of the reentry trajectory in the height-velocity profile; S2, solving a reentry trajectory of an initial descent stage according to differential equations of reentry motion, and determining a starting point of a trajectory of a gliding stage according to the trajectory of the initial descent stage; and S3, planning a trajectory in the height-velocity profile satisfying terminal constraints based on the lower boundary in the height-velocity profile, and calculating a corresponding bank angle, to obtain the reentry trajectory.
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机译:一种用于直接规划高度速度分布中的再入轨迹的方法包括以下步骤:S 1 b>,提取飞机的实际工作参数,将最大值{dot Over(q)} < Sub>最大滞销点热通量,动态压力的最大值q max sum>的最大值,以及根据任务要求的过载的最大值n max sub>并且求解再入轨迹的高度 - 速度边界,即高度速度曲线中再入轨迹的较低边界;小号 2 B>,解决一个初始下降阶段的再入轨迹根据再入运动微分方程,并根据所述初始下降阶段的轨迹的滑行阶段的轨迹的起点;并且S 3 b>规划了满足终端约束的高速速度曲线的轨迹,基于高度速度分布的下边界,并计算相应的银行角度,以获得再入轨迹。
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