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    Improvements in rocket motors or gas generators
    4.
    发明公开
    Improvements in rocket motors or gas generators 失效
    或火箭发动机，气体发生器。

    公开(公告)号：EP0028150A1

    公开(公告)日：1981-05-06

    申请号：EP80303794.4

    申请日：1980-10-24

    申请人： MORTON THIOKOL, INC.

    发明人： Whitesides, Roger H.Jr.

    IPC分类号： F02K9/36 ,  F02K9/26 ,  F02K9/34

    CPC分类号： F02K9/346 ,  F02K9/26 ,  F02K9/36

    摘要： A solid propellant rocket motor or gas generator of the type having retractable filaments (18) embedded in the propellant (13) for the purpose of controlling the overall thrust or mass flow output is combined with a channeled separator (14) located between the propellant (13) and its casing (10) with the channels (16) open to the combustion chamber via ports (17). This results in distribution of combustion chamber pressure and temperatures over the exterior of the propellant grain (13) so that distortion of the grain will not occur sufficiently to cause binding or sticking of the filaments (18) in their holes in the propellant nor will the holes be enlarged to cause uncontrolled burning between the filament and the hole.

    Hybrid rocket motor solid fuel grain
    8.
    发明公开
    Hybrid rocket motor solid fuel grain 失效
    Fester Brennstoffblock eines Hybridtriebwerks。

    公开(公告)号：EP0683312A1

    公开(公告)日：1995-11-22

    申请号：EP94303354.8

    申请日：1994-05-10

    申请人： AMERICAN ROCKET COMPANY

    发明人： McKinney, Bevin C. ,  Kniffen, Roy J., Jr.

    IPC分类号： F02K9/72 ,  F02K9/36

    CPC分类号： C06D5/10 ,  F02K9/14 ,  F02K9/36 ,  F02K9/72

    摘要： A hybrid rocket motor includes a solid propellant fuel grain component which incorporates fuel strengthening agents or mechanical retention devices. In one embodiment, the hybrid fuel formulation is a modified elastomeric polyurethane reaction product based on a liquid hydroxyl-terminated homopolymer of butadiene. A reinforcing agent is added which increases the tensile and tear strength of the grain by 50%. By so strengthening the grain, separation of the grain during the last portion of the burn is minimized. In a second exemplary embodiment, mechanical web stiffeners are provided in the form of a core configuration about which the fuel grain is cast. The web stiffeners are in the form of an open tetrahexagonal truss structure which mechanically traps and adheres to the fuel and becomes an integral part of the fuel grain geometry. In both embodiments, the integrity of the webs is maintained throughout the burn. Foam slivers may be added to the radially inner ends of web stiffeners to further inhibit undesired separation during the last part of the burn.

    摘要翻译： 混合火箭发动机包括固体推进剂燃料颗粒组分，其包含燃料强化剂或机械保持装置。 在一个实施方案中，混合燃料配方是基于液体羟基封端的丁二烯均聚物的改性弹性聚氨酯反应产物。 添加增强剂，其将谷物的拉伸和撕裂强度提高50％。 通过如此强化晶粒，在烧伤的最后部分期间颗粒的分离被最小化。 在第二示例性实施例中，机械腹板加强件以核心构造的形式提供，燃料颗粒围绕该构造铸造。 腹板加强件是开放的四边形桁架结构的形式，其机械地捕获并粘附到燃料上并且成为燃料颗粒几何形状的组成部分。 在两个实施方案中，在整个烧伤过程中维持幅材的完整性。 可以将泡沫条子添加到幅材加强件的径向内端，以进一步抑制在烧伤的最后部分期间的不期望的分离。