The invention discloses an axisymmetric reentry vehicle thermal protection method based on magnetofluid flow control. The magnetic field of the near-wall area of an axisymmetric reentry vehicle is generated by utilizing a coil network formed by combining electrified polygonal coils. The coil network covers the inner surface of the shell of the reentry vehicle, the topological structure of the local magnetic field is jointly determined by the number and geometrical shape of the coils in the area, and the intensity of the local magnetic field can be adjusted by changing the current intensity ofthe coils. The Lorentz force generated by the designed magnetic field changes the motion of ionized gas after shock waves of the reentry vehicle, and reduces the heat flow on the surface of the reentry vehicle, thereby improving the thermal protection capability of the vehicle. The corresponding coil network can be flexibly designed according to the geometrical shape of the reentry vehicle, the required magnetic field is generated on the whole surface of the reentry vehicle, and the fine adjustment of the local magnetic field intensity can be realized by changing the current intensity of the local coil, so that the adjustment of the heat flow distribution of the wall surface of the reentry vehicle is realized. The aerodynamic force borne by the reentry vehicle can be changed by changing the on-off states of the coils in different areas on the surface of the reentry vehicle, and then the attitude and flight path of the reentry vehicle are adjusted. In addition, the coil network is arranged on the inner surface of the reentry vehicle, so that the reentry vehicle has the advantages of low space occupancy rate, no damage to the original geometrical shape of the vehicle and the like.

    本发明公开了一种基于磁流体流动控制的轴对称再入飞行器热防护方法。本发明利用通电多边形线圈组合成的线圈网络生成轴对称再入飞行器近壁面区域的磁场。线圈网络覆盖再入飞行器外壳的内表面,局部磁场的拓扑结构由该区域的线圈数量、几何形状共同决定,局部磁场的强度可通过改变线圈的电流强度进行调节。设计的磁场产生的洛伦兹力改变了再入飞行器激波后电离气体的运动,减小了再入飞行器表面的热流,从而提高了飞行器的热防护能力。本发明可以根据再入飞行器的几何形状灵活设计对应的线圈网络,并在再入飞行器的全表面生成所需的磁场,通过改变局部线圈的电流强度可以实现对局部磁场强度的精细调节,从而实现对飞行器壁面热流分布的调节。通过改变飞行器表面不同区域线圈的开关状态可以改变飞行器所受的气动力,进而对飞行器的姿态和飞行轨迹进行调节。此外,由于线圈网络布置于再入飞行器的内表面,因此具有空间占用率低、不破坏飞行器原有几何外形等优势。


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    Titel :

    Axisymmetric reentry vehicle thermal protection method based on magnetofluid flow control


    Weitere Titelangaben:

    基于磁流体流动控制的轴对称再入飞行器热防护方法


    Beteiligte:
    WANG JIANGFENG (Autor:in) / WANG DING (Autor:in) / LI LONGFEI (Autor:in) / YANG TIANPENG (Autor:in) / KANG MING (Autor:in) / ZHANG LENGYIN (Autor:in)

    Erscheinungsdatum :

    2021-03-16


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B64C AEROPLANES , Flugzeuge / H01F MAGNETS , Magnete



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