Pneumatic roughness measurer
    1.
    发明授权
    Pneumatic roughness measurer 失效
    气动粗糙度测量仪

    公开(公告)号:US4019379A

    公开(公告)日:1977-04-26

    申请号:US676341

    申请日:1976-04-12

    IPC分类号: G01B13/22 G01B5/28

    CPC分类号: G01B13/22

    摘要: A method for measuring the surface roughness of a workpiece, comprising filling two capacitors with a compressed gas at specific pressures; applying to the rough surface of the workpiece to be studied the open end of a bell-form sensor connected to a second one of the capacitors; evacuating simultaneously and individually to atmosphere the two capacitors, the first through a calibrated throttle, the second through the leak existing between the edge of said sensor bell and the rough surface of the workpiece; measuring, during evacuation, the difference between the pressures in the two capacitors; and deducing from this pressure differential, by standardization with sample pieces of known roughness, the roughness of the piece studied.

    摘要翻译: 一种用于测量工件的表面粗糙度的方法,包括在特定压力下用压缩气体填充两个电容器; 施加到要研究的工件的粗糙表面上,连接到第二电容器的钟形传感器的开口端; 同时和单独排气到两个电容器的空气中,第一个通过校准的节流阀,第二个通过在传感器钟形的边缘和工件的粗糙表面之间存在的泄漏; 在抽真空时测量两个电容器之间的压力差; 并从该压差推断出,通过标准化已知粗糙度的样品片,研究了该片的粗糙度。

    Array antenna with shaped reflector(s), highly reconfigurable in orbit
    2.
    发明授权
    Array antenna with shaped reflector(s), highly reconfigurable in orbit 有权
    具有成形反射器的阵列天线,在轨道上高度可重构

    公开(公告)号:US07714792B2

    公开(公告)日:2010-05-11

    申请号:US11995525

    申请日:2006-07-11

    IPC分类号: H01Q13/00

    CPC分类号: H01Q15/16 H01Q19/17 H01Q21/06

    摘要: An array antenna with reflector(s) (AR) comprises i) an array (RS) of at least two feeds (S1-S5), including a central feed (S1), arranged and positioned so as to transmit and/or receive beams (F1-F5) in chosen directions, ii) beam-forming means responsible for controlling the amplitude and phase of each of the feeds by means of amplitude/phase laws applied to their ports and providing an appropriate amplification level, in order for each feed (S1-S5) to transmit a chosen radiation pattern (forming a beam and comprising a main lobe) intended to cover a chosen zone (Z1-Z5), and iii) at least one reflector (RC) provided with a surface (SU) specifically for reflecting the beams delivered by the feeds and/or intended for the latter, and shaped tree-dimensionally so as to reflect the beam delivered by each feed (S1-S5) by spreading its energy such that it covers the chosen associated zone, that the main lobe of the radiation pattern associated with the central feed (S1) defines a primary coverage (CP) fully including each active coverage zone (ZC1,ZC2) of the antenna (AR), of chosen shape and dimensions, and that the main lobe of the radiation pattern associated with each non-central feed (S2-S5) at least partially overlaps the primary cover (CP).

    摘要翻译: 具有反射器(AR)的阵列天线包括:i)包括中心馈送(S1)的至少两个馈送(S1-S5)的阵列(RS),其布置和定位成发射和/或接收光束 (F1-F5),ii)波束形成装置,负责通过施加到其端口的幅度/相位定律来控制每个馈送的幅度和相位,并提供适当的放大电平,以便每个馈送 (S1-S5),以传送旨在覆盖所选择的区域(Z1-Z5)的所选择的辐射图案(形成束并​​包括主瓣),以及iii)至少一个设置有表面(SU)的反射器(RC) 专门用于反射由馈送器传送的和/或用于后者的光束,并以树形尺寸成形,以便通过展开其能量使其覆盖所选择的相关区域来反射由每个馈送器传递的光束(S1-S5) 与中央进给(S1)相关联的辐射图的主瓣定义了主要的cov 完全包括所选形状和尺寸的天线(AR)的每个有效覆盖区域(ZC1,ZC2)的消耗(CP),以及与每个非中心馈送(S2-S5)相关联的辐射图的主瓣 最小部分与主盖(CP)重叠。

    Array Antenna with Shaped Reflector(S), Highly Reconfigurable in Orbit
    3.
    发明申请
    Array Antenna with Shaped Reflector(S), Highly Reconfigurable in Orbit 有权
    阵列天线与形状反射器(S),在轨道高度重新配置

    公开(公告)号:US20080303736A1

    公开(公告)日:2008-12-11

    申请号:US11995525

    申请日:2006-07-11

    IPC分类号: H01Q19/10

    CPC分类号: H01Q15/16 H01Q19/17 H01Q21/06

    摘要: An array antenna with reflector(s) (AR) comprises i) an array (RS) of at least two feeds (S1-S5), including a central feed (S1), arranged and positioned so as to transmit and/or receive beams (F1-F5) in chosen directions, ii) beam-forming means responsible for controlling the amplitude and phase of each of the feeds by means of amplitude/phase laws applied to their ports and providing an appropriate amplification level, in order for each feed (S1-S5) to transmit a chosen radiation pattern (forming a beam and comprising a main lobe) intended to cover a chosen zone (Z1-Z5), and iii) at least one reflector (RC) provided with a surface (SU) specifically for reflecting the beams delivered by the feeds and/or intended for the latter, and shaped tree-dimensionally so as to reflect the beam delivered by each feed (S1-S5) by spreading its energy such that it covers the chosen associated zone, that the main lobe of the radiation pattern associated with the central feed (S1) defines a primary coverage (CP) fully including each active coverage zone (ZC1,ZC2) of the antenna (AR), of chosen shape and dimensions, and that the main lobe of the radiation pattern associated with each non-central feed (S2-S5) at least partially overlaps the primary cover (CP).

    摘要翻译: 具有反射器(AR)的阵列天线包括:i)包括中心馈送(S1)的至少两个馈送(S1-S5)的阵列(RS),其布置和定位成发射和/或接收光束 (F1-F5),ii)波束形成装置,负责通过施加到其端口的幅度/相位定律来控制每个馈送的振幅和相位,并提供适当的放大电平,以便每个馈送 (S1-S5),以传送旨在覆盖所选择的区域(Z1-Z5)的所选择的辐射图案(形成束并​​包括主瓣),以及iii)至少一个设置有表面(SU)的反射器(RC) 专门用于反射由馈送器传送的和/或用于后者的光束,并以树形尺寸成形,以便通过展开其能量使其覆盖所选择的相关区域来反射由每个馈送器传递的光束(S1-S5) 与中央进给(S1)相关联的辐射图的主瓣定义了一个主cov 完全包括所选形状和尺寸的天线(AR)的每个有效覆盖区域(ZC1,ZC2)的消耗(CP),以及与每个非中心馈送(S2-S5)相关联的辐射图的主瓣 最小部分与主盖(CP)重叠。