Universal fluid-dynamic body for aircraft and watercraft
    1.
    发明授权
    Universal fluid-dynamic body for aircraft and watercraft 失效
    用于飞机和船舶的通用流体动力体

    公开(公告)号:US5730391A

    公开(公告)日:1998-03-24

    申请号:US458868

    申请日:1995-06-05

    摘要: A body configuration for improving the fluid-dynamic performance efficiency of aircraft and watercraft comprises a generally conical upper segment (54) and a generally conical lower segment (56) that are joined at a common base plane (53), achieved by inverting the conical lower segment (56). The slopes of the conical surfaces are determined by the prescribed planform of the craft or vehicle and by the height of the conical segments wherein the height of the conical upper segment (h.sub.u) is less than and typically two-thirds that of the conical lower segment (h.sub.L). Although not limited to elliptical planforms, a generally circular planform (52) is preferred for a vertical takeoff and landing aircraft operating in the subsonic flight regime and an elliptical planform (68), with a large aspect ratio for takeoff and low-speed flight, then rotating to a low-aspect-ratio orientation for supersonic flight operation, is preferred for supersonic transport and single-stage-to-orbit type aircraft. The unique conical configuration allows the aircraft to take off and operate at low-speeds with the high lift and efficiency of the large aspect ratio orientation, operate as an oblique all-wing aircraft during climb and acceleration to higher flight speeds, and then fully transition to the low aspect ratio orientation for high-speed operation, including transonic, supersonic, and hypersonic flight. Allowable modifications are defined to optimize and adapt the universal fluid-dynamic body to satisfy unique functional requirements of potential vehicle applications, including submersible and surface-effects type watercraft.

    摘要翻译: 用于改善飞行器和船只的流体动力性能效率的主体构造包括大致圆锥形的上部段(54)和大致圆锥形的下部段(56),其在共同的基础平面(53)处接合,通过将锥形 下段(56)。 锥形表面的斜面由飞行器或车辆的规定平面图以及锥形段的高度确定,其中锥形上段(hu)的高度小于锥形下段(hu)的高度,典型地为锥形下段的高度的三分之二 (hL)。 虽然不限于椭圆形平面,但是对于在亚音速飞行状态下运行的垂直起飞和着陆飞机以及起飞和低速飞行的大纵横比的椭圆平面(68),优选一般为圆形的平面形式(52) 然后对于超音速飞行操作旋转到低纵横比方向,对于超音速运输和单级到轨道式飞机是优选的。 独特的锥形配置允许飞机以高速提升和高纵横比方向的效率以低速起飞和操作,在爬升和加速到更高的飞行速度时作为倾斜的全翼飞机起作用,然后完全过渡 对于高速操作的低纵横比取向,包括跨音速,超音速和超音速飞行。 定义允许的修改以优化和调整通用流体动力体,以满足潜在的车辆应用的独特功能要求,包括潜水和表面效应型船只。

    Liquid-propellant management apparatus
    2.
    发明授权
    Liquid-propellant management apparatus 失效
    液体推进剂管理装置

    公开(公告)号:US4901762A

    公开(公告)日:1990-02-20

    申请号:US251736

    申请日:1988-10-03

    IPC分类号: B64G1/40 F17C13/00

    摘要: A liquid-propellant tank for a spacecraft is symmetric about a longitudinal axis, and has a transverse partition (15) and a truncated conical partition (16), which divide the interior of the tank into a remote chamber (20), a proximate peripheral chamber (21) and a proximate axial chamber (22). Communication between the remote chamber (20) and the proximate peripheral chamber (21) is provided by a port structure (23), and communication between the proximate peripheral chamber (21) and the proximate axial chamber (22) is provided by a port structure (24). As liquid propellant is withdrawn from the tank, pressurant gas in the remote chamber (20) causes liquid propellant to pass from the remote chamber (20) into the proximate peripheral chamber (21) to replace liquid propellant thereby forced from the proximate peripheral chamber (21) into the proximate axial chamber (22), which replaces the liquid propellant withdrawn from the tank. Emptying of the three chambers in sequence limits the extent of migration of liquid propellant within the tank, thereby minimizing the effects of liquid-propellant migration on attitude stability of the spacecraft.

    摘要翻译: 用于航天器的液体推进剂罐关于纵向轴线对称,并且具有横向分隔件(15)和截头圆锥形分隔件(16),其将罐的内部分成远程室(20),邻近的外围 室(21)和邻近的轴向室(22)。 远程室(20)和邻近周边室(21)之间的通信由端口结构(23)提供,并且邻近的外围室(21)和邻近轴向室(22)之间的连通由端口结构 (24)。 当液体推进剂从罐中取出时,远程室(20)中的加压气体使得液体推进剂从远程室(20)进入邻近的周边室(21),以更换液体推进剂,从而迫使其从邻近的外围室 21)进入邻近的轴向室(22),其代替从罐排出的液体推进剂。 这三个舱室依次排空限制了液体推进剂在罐内的迁移程度,从而使液体推进剂迁移对航天器姿态稳定性的影响最小化。

    Apparatus for cleaning threaded pipe ends
    3.
    发明授权
    Apparatus for cleaning threaded pipe ends 失效
    用于清洁螺纹管端的装置

    公开(公告)号:US4157096A

    公开(公告)日:1979-06-05

    申请号:US916684

    申请日:1978-06-19

    IPC分类号: B08B9/02 B08B9/023 B08B3/02

    CPC分类号: B08B9/021

    摘要: Apparatus for cleaning pipe ends having a closed system, for recycling cleaning fluid by removing contaminants, which includes independently positionable pin end and box end wash heads each of which can be used alone or simultaneously with the other; each wash head providing a high pressure spray of cleaning fluid impinging on the exposed threads of the pipe end being washed within a sealed wash chamber formed by the wash head.

    摘要翻译: 用于清洁具有封闭系统的管端的设备,用于通过去除污染物来循环清洁流体,所述污染物包括独立定位的销端和箱端清洗头,每个可以单独使用或同时使用; 每个洗涤头提供冲洗在被清洗头形成的密封洗涤室内的管端的暴露螺纹上的高压喷射的清洁流体。