The invention discloses an entry brake parachute with hinged fairing petals, and belongs to the technical field of spaceflight. According to the entry brake parachute with the hinged fairing petals, the ready-made beneficial condition of a large fairing is ingeniously utilized, all the hinged fairing petals are driven to be synchronously unfolded outwards, the heat-resistant fabric brake parachute cover flexibly connected with the hinged fairing petals is rigidly supported, and the brake parachute with the especially huge aerodynamic resistance area is formed. And when entering the upper rarefied atmosphere at an orbital velocity, the large resistance area can generate large shock wave pneumatic dynamic pressure resistance. Therefore, the upper-stage rocket can be fully braked and decelerated in advance for a long time. And returning in an ultra-low ballistic coefficient mode. When the rocket body reaches the dense atmosphere at the lower layer, the flight speed is slowed down to be very slow, so that the purposes of greatly reducing the pneumatic heating load and the pneumatic dynamic pressure load and effectively protecting the fragile rocket body structure are achieved. And finally, the upper-stage rocket is recycled in an intact manner. And the whole fairing with high value is also recovered. Similarly, the first-stage core of the first-stage half rocket can be completely recycled.

    本发明公开了铰接式整流罩瓣的进入减速伞,涉属于航天技术领域。该铰接式整流罩瓣的进入减速伞十分巧妙地利用了大型整流罩“现成之有利条件”,通过驱动各片铰接式整流罩瓣同步向外展开,刚性支撑与之柔性连接的耐热织物减速伞伞面,形成一具气动阻力面积特别巨大的减速伞。以轨道速度再入上层稀薄大气层,巨大阻力面积即可产生很大的激波气动动压阻力。因而能够“长时间、提前、充分地”制动减速上面级火箭。使其以“超低弹道系数”方式再入返回。那么抵达下层稠密大气层时飞行速度已经减慢至非常慢,从而达到极大幅度降低气动加热负荷和气动动压载荷,有效保护脆弱箭体结构之目的。最终完好无损地回收了上面级火箭。并且还顺带回收了整个价值不菲的整流罩。同理,亦可以完全回收一级半火箭之芯一级。


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    Title :

    Entering brake parachute with hinged fairing petals


    Additional title:

    铰接式整流罩瓣的进入减速伞


    Contributors:
    MU QIAN (author)

    Publication date :

    2024-05-03


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64G Raumfahrt , COSMONAUTICS



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