METHOD AND APPARATUS FOR MEASURING RIGIDITY DISTRIBUTION

    公开(公告)号:US20200263970A1

    公开(公告)日:2020-08-20

    申请号:US16061537

    申请日:2016-12-16

    Abstract: An apparatus for measuring a deformation distribution of an object having a longitudinal dimension comprises a structure for supporting the object. A sensor unit comprises a base, a contact member having a body connected to the base by a rotational joint such rotational degrees of freedom are provided between the base and the contact member, an end of the body configured to contact and move along the object, and at least one sensor for determining an orientation of the body relative to the base. A displacement module enables relative movement between the sensor unit and the structure for the sensor unit to relatively move along the object in the longitudinal dimension. A method and system for measuring a rigidity distribution of an object having a longitudinal dimension are also provided.

    A SKI HAVING A STABILIZING SECTION, A PAIR OF SKIS AND A STABILIZATION DEVICE

    公开(公告)号:US20240424382A1

    公开(公告)日:2024-12-26

    申请号:US18690301

    申请日:2022-09-01

    Abstract: A ski has an upwardly rising front tip, a rear tail, and a midsection extending along a longitudinal axis of the ski between the front tip and the rear tail, the midsection including a waist section adapted for mounting a binding thereon. At least one stabilizing section is located between the front tip and the waist section or between the waist section and the rear tail. The at least one stabilizing section is offset from the longitudinal axis of the ski toward a first side of the ski. The stabilizing section may offset, toward and inside or an outside of the ski, a center of mass, a level of stiffness, or a damping effect of the stabilizing section. A pair of skis comprises such left and right skis. A stabilization device may be mounted on an ordinary ski.

    Method and apparatus for measuring rigidity distribution

    公开(公告)号:US11118892B2

    公开(公告)日:2021-09-14

    申请号:US16061537

    申请日:2016-12-16

    Abstract: An apparatus for measuring a deformation distribution of an object having a longitudinal dimension comprises a structure for supporting the object. A sensor unit comprises a base, a contact member having a body connected to the base by a rotational joint such rotational degrees of freedom are provided between the base and the contact member, an end of the body configured to contact and move along the object, and at least one sensor for determining an orientation of the body relative to the base. A displacement module enables relative movement between the sensor unit and the structure for the sensor unit to relatively move along the object in the longitudinal dimension. A method and system for measuring a rigidity distribution of an object having a longitudinal dimension are also provided.

    COMBUSTION SYSTEMS AND COMBUSTION SYSTEM COMPONENTS FOR ROTARY RAMJET ENGINES
    7.
    发明申请
    COMBUSTION SYSTEMS AND COMBUSTION SYSTEM COMPONENTS FOR ROTARY RAMJET ENGINES 有权
    用于旋转拉杆发动机的燃烧系统和燃烧系统组件

    公开(公告)号:US20140290259A1

    公开(公告)日:2014-10-02

    申请号:US14126782

    申请日:2012-05-25

    Abstract: A combustion systems and components for rotary ramjet engines. An injection system, optionally stratified for ease of engine startup, provides an air and fuel mixture to a combustion chamber. An ignition system ignites the mixture. A flameholding system may be positioned for communication with the combustion chamber to force an ignited flow of the air and fuel mixture toward a center of rotation within the ramjet engine. The ramjet engine may have a diverging stator for improved exhaust efficiency. The ignition may take place in the engine air intake. Alternatively, the ignition may take place within the combustion chamber using a dual-hub electrically charged system. An impulse turbine may use recirculation of injected fuel to cool a rim-rotor and/or to reduce windage on the rim-rotor. A sealing system may reduce gas leaks from a fuel conduit into the engine air intake.

    Abstract translation: 用于旋转冲压喷气发动机的燃烧系统和部件。 为了便于发动机起动,可选地分层的喷射系统为燃烧室提供空气和燃料混合物。 点火系统点燃混合物。 火焰保持系统可以被定位成与燃烧室连通以迫使空气和燃料混合物的点燃流动朝向冲压喷气发动机内的旋转中心。 冲压式喷气发动机可以具有发散定子,以提高排气效率。 点火可能发生在发动机进气口。 或者,可以使用双毂式带电系统在燃烧室内进行点火。 脉冲涡轮机可以使用喷射燃料的再循环来冷却轮辋转子和/或减少轮辋转子上的风向。 密封系统可以减少从燃料管道到发动机进气口的气体泄漏。

    PIEZOELECTRIC SENSORS AND SENSOR ARRAYS FOR THE MEASUREMENT OF WAVE PARAMETERS IN A FLUID, AND METHOD OF MANUFACTURING THEREFOR
    8.
    发明申请
    PIEZOELECTRIC SENSORS AND SENSOR ARRAYS FOR THE MEASUREMENT OF WAVE PARAMETERS IN A FLUID, AND METHOD OF MANUFACTURING THEREFOR 审中-公开
    用于测量流体中的波形参数的压电传感器和传感器阵列及其制造方法

    公开(公告)号:US20140224019A1

    公开(公告)日:2014-08-14

    申请号:US14234170

    申请日:2012-08-06

    CPC classification number: G01L9/08 G01H11/08 H01L41/1132 H01L41/22 H01L41/332

    Abstract: The present disclosure relates to piezoelectric sensors and piezoelectric sensor arrays, to methods of manufacturing therefor, and to a method of measuring characteristics of a mechanical wave using a piezoelectric sensor array. A piezoelectric sensor is formed of a silicon substrate on which an electrical barrier is added. A patterned bottom electrode layer is added on top of the electrical barrier. A patterned bottom electrode layer is added on top of the electrical barrier. A piezoelectric layer and then a patterned top electrode layer are added on top of the electrical barrier.

    Abstract translation: 本公开涉及压电传感器和压电传感器阵列,其制造方法以及使用压电传感器阵列来测量机械波特性的方法。 压电传感器由其上添加有电屏障的硅基板形成。 图案化的底部电极层被添加在电气屏障的顶部。 图案化的底部电极层被添加在电气屏障的顶部。 将压电层,然后将图案化的顶部电极层添加到电气屏障的顶部。

    Method and apparatus for controlling tonal noise from subsonic fans
    10.
    发明授权
    Method and apparatus for controlling tonal noise from subsonic fans 失效
    用于控制亚音速风扇的音调噪声的方法和装置

    公开(公告)号:US08777560B2

    公开(公告)日:2014-07-15

    申请号:US12821799

    申请日:2010-06-23

    CPC classification number: F04D29/522 B64C11/00 F02C7/045 F04D29/667

    Abstract: A method and apparatus for reducing a selected tonal noise generated by a fan operating in a non-uniform flow by locating at least one obstruction in the non-uniform flow such that the at least one obstruction generates a noise that is out of phase with the selected tonal noise. The noise generated by the at least one obstruction interferes with the selected tonal noise, thus reducing the selected tonal noise. It is also contemplated to use additional obstructions to reduce other tonal noises generated by the fan.

    Abstract translation: 一种用于通过在非均匀流中定位至少一个障碍物来减少由非均匀流动操作的风扇产生的所选择的音调噪声的方法和装置,使得所述至少一个障碍物产生与所述非均匀流异相的噪声 选择音调噪音。 由至少一个障碍物产生的噪声干扰所选择的音调噪声,从而减少所选择的音调噪声。 还可以设想使用附加的障碍物来减少风扇产生的其它音调噪声。

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