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    Hybrid-LO2-LH2 low cost launch vehicle
    4.
    发明授权
    Hybrid-LO2-LH2 low cost launch vehicle 失效
    混合LO2-LH2低成本运载火箭

    公开(公告)号：US5765361A

    公开(公告)日：1998-06-16

    申请号：US701938

    申请日：1996-08-23

    申请人： Herbert Stephen Jones ,  Harry Phillip Williams

    发明人： Herbert Stephen Jones ,  Harry Phillip Williams

    IPC分类号： F02K9/26 ,  F02K9/34 ,  F02K9/72 ,  F02K9/28

    CPC分类号： F02K9/26 ,  F02K9/34 ,  F02K9/72

    摘要： A low-cost rocket or thruster has a low-cost propellant injector, in which fluid fuel and oxidizer are injected into a combustion chamber. The walls of the combustion chamber are protected from the high temperatures of the combustion by a grain of solid propellant, the surface of which tends to melt andor vaporize in the presence of combustion temperatures, and thereby protects the walls of the chamber. The low-cost propellant injector may not mix the fluid fuel and oxidizer effectively, so that pockets of noncombusted gas may occur within the chamber. The ratio of fluid fuel and oxidizer is selected to be slightly oxidizer-rich, so that any pockets of unburned gas tend to be oxygen-rich. When the pockets come into contact with the solid fuel, the excess oxygen combusts with the gaseous solid fuel, and when the mixture is near stoichiometric, the fluid fuel combusts. Thus, an inexpensive bipropellant injector together with a solid fuel grain simultaneously allows use of solid fuel instead of insulation to protect the combustion chamber walls, and the combustion is stabilized by the presence of the solid fuel. Ideally, the amount of excess oxidizer should be sufficient to completely combust the solid fuel. The preferred propellants are LO2 and LH2, and the preferred solid fuel is HTPB.

    摘要翻译： 低成本火箭或推进器具有低成本的推进剂喷射器，其中将流体燃料和氧化剂注入到燃烧室中。 通过一定固体推进剂颗粒保护燃烧室壁免受高温燃烧，其表面在燃烧温度存在的情况下倾向于熔化和蒸发，从而保护室壁。 低成本的推进剂喷射器可能不会有效地混合流体燃料和氧化剂，从而在室内可能会发生一些未燃气体。 液体燃料和氧化剂的比例选择为略微氧化剂丰富，使得任何未燃烧气体的气体倾向于富氧。 当口袋与固体燃料接触时，过量的氧气与气体固体燃料燃烧，当混合物接近化学计量时，流体燃料燃烧。 因此，便宜的双组元推进剂注射器与固体燃料颗粒同时允许使用固体燃料代替绝缘以保护燃烧室壁，并且燃烧通过固体燃料的存在来稳定。 理想情况下，过量氧化剂的量应足以完全燃烧固体燃料。 优选的推进剂是LO2和LH2，优选的固体燃料是HTPB。

    Auriferous gravel interceptor
    7.
    发明授权
    Auriferous gravel interceptor 失效
    砾石拦截器

    公开(公告)号：US4397503A

    公开(公告)日：1983-08-09

    申请号：US272087

    申请日：1981-06-10

    申请人： Harry K. Williams

    发明人： Harry K. Williams

    IPC分类号： E02F7/00 ,  E21C45/00 ,  E21C50/00

    CPC分类号： E02F7/005 ,  E21C41/26 ,  E21C50/00

    摘要： A continuous belt traverses a river through channels on the river bed and carries intercepted material to the river banks for separation of precious metals and gemstones therefrom. Method and apparatus claimed.

    摘要翻译： 连续带穿过河床上的河道，将截取的物料运送到河岸，分离贵金属和宝石。 所要求的方法和装置。