The invention discloses an efficient prediction-correction guidance method for burn-up optimal pneumatic-assisted orbit descending, which belongs to the field of aerospace, and comprises the following steps: establishing a spacecraft pneumatic-assisted orbit descending flight dynamics model and a pulse maneuvering model required by a spacecraft entering a target orbit after the spacecraft exits the atmosphere; and decoupling and extracting a simplified longitudinal in-plane motion equation from the kinetic model, performing variable substitution, converting an independent variable into a variable in an energy form, obtaining a mapping relation between a heeling angle control quantity and flight states such as a flight path angle, planning a flight path angle profile based on the trajectory characteristics of the burnup optimal pneumatic auxiliary orbit descent, and finally obtaining a flight path angle profile. And deriving an analytical expression of a guidance instruction, designing a three-stage guidance scheme, and realizing efficient prediction-correction guidance. By the adoption of the method, efficient prediction-correction guidance can be carried out under the pneumatically-assisted orbit descending task scenes with remarkably different conditions, the flexibility and adaptability of the method are embodied, and effective technical guarantee can be provided for maneuvering orbit transfer tasks of spacecrafts.

    本发明公开了一种燃耗最优气动辅助降轨高效预测‑校正制导方法,属于航空航天领域,包括建立航天器气动辅助降轨飞行动力学模型,以及航天器出大气后、进入目标轨道所需的脉冲机动模型,从动力学模型中解耦提取出简化的纵向平面内运动方程并作变量代换,将自变量转换为能量形式的变量,得到倾侧角控制量与航迹角等飞行状态的映射关系,并基于燃耗最优气动辅助降轨的轨迹特征规划航迹角剖面,推导制导指令的解析表达式,设计三阶段制导方案,实现高效预测‑校正制导。本发明采用上述方法,在条件显著不同的气动辅助降轨任务场景下都能进行高效预测‑校正制导,体现出方法的灵活性和适应性,可以为航天器机动变轨任务提供有效技术保障。


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    Titel :

    Burnup optimal pneumatic auxiliary orbit descending efficient prediction-correction guidance method


    Weitere Titelangaben:

    一种燃耗最优气动辅助降轨高效预测-校正制导方法


    Beteiligte:
    HAN HONGWEI (Autor:in) / CHEN JILIN (Autor:in) / QIAO DONG (Autor:in)

    Erscheinungsdatum :

    06.05.2025


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B64G Raumfahrt , COSMONAUTICS



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