The invention discloses a telescopic thermal protection bow part of an aerospace craft, which comprises an aerospace craft nose cone, a telescopic rod, a pneumatic table and a shock wave needle; the telescopic rod is telescopically arranged on the front portion of the aerospace craft nose cone and coincides with the axis of the aerospace craft nose cone; one end of the pneumatic table is connected with the other end of the telescopic rod, and the shock wave needle is perpendicularly fixed to the center of the other end of the pneumatic table. The telescopic bow is arranged on the nose cone and can retract on the ground, in the takeoff process and in the outer space, so that the resistance in the takeoff process can be reduced, and accidental damage can be avoided; the telescopic bow extends out before the aerospace craft reenters the atmosphere, so that arched attached shock waves of a blunt body of the aircraft can be pushed forwards and converted into weaker oblique shock waves, the flow rate of gas reaching the nose cone is effectively reduced, the strength of the reattached shock waves is weakened, and the aim of heat protection is achieved; the pneumatic table and the shock wave needle are arranged at the top end of the telescopic rod in a layered mode, so that burning loss can be obviously reduced, the time of reentering the atmosphere is prolonged, and the maneuvering flexibility is improved; and the telescopic thermal protection bow part has the advantages of being simple in structure, small in takeoff resistance, good in heat protection effect and slow in burning loss.

    本发明公开了一种航天飞行器伸缩式热防护艏部,包括航天飞行器头锥、伸缩杆、气动台、激波针,伸缩杆可伸缩的设于航天飞行器头锥前部且与其轴线重合,气动台一端与伸缩杆另一端连接,激波针垂直固定于气动台另一端中心。本发明在头锥设置可伸缩的艏部,可在地面、起飞及太空时缩回,既能减小起飞时的阻力,又能避免意外损坏;而在再入大气层前伸出,可将飞行器钝头体的弓形附体激波前推并转化为较弱的斜激波,有效降低到达头锥气体的流速以减弱再附激波强度,达到防热目的;且在伸缩杆顶端分层设置气动台及激波针,可显著减缓烧损,从而延长再入大气层的时间以提高机动灵活性,具有结构简单、起飞阻力小、防热效果好、烧损缓慢的特点。


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    Title :

    Telescopic thermal protection bow part of aerospace craft


    Additional title:

    一种航天飞行器伸缩式热防护艏部


    Contributors:
    HE DAYONG (author)

    Publication date :

    2021-10-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64G Raumfahrt , COSMONAUTICS



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