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    • 62. 发明授权
    • Aerospace laser ignition/ablation variable high precision thruster
    • 航空激光点火/消融变量高精度推进器
    • US09021782B1
    • 2015-05-05
    • US12862510
    • 2010-08-24
    • Jonathan W. CampbellDavid L. EdwardsJason J. Campbell
    • Jonathan W. CampbellDavid L. EdwardsJason J. Campbell
    • F03H1/00B64G1/40G21D5/02
    • B64G1/406B64G1/402F03H1/00G21D5/02
    • A laser ignition/ablation propulsion system that captures the advantages of both liquid and solid propulsion. A reel system is used to move a propellant tape containing a plurality of propellant material targets through an ignition chamber. When a propellant target is in the ignition chamber, a laser beam from a laser positioned above the ignition chamber strikes the propellant target, igniting the propellant material and resulting in a thrust impulse. The propellant tape is advanced, carrying another propellant target into the ignition chamber. The propellant tape and ignition chamber are designed to ensure that each ignition event is isolated from the remaining propellant targets. Thrust and specific impulse may by precisely controlled by varying the synchronized propellant tape/laser speed. The laser ignition/ablation propulsion system may be scaled for use in small and large applications.
    • 激光点火/消融推进系统,捕捉液体和固体推进的优点。 卷轴系统用于将包含多个推进剂材料靶的推进剂带移动通过点火室。 当推进剂靶位于点火室中时,来自位于点火室上方的激光器的激光束撞击推进剂靶,点燃推进剂材料并产生推力冲击。 推进剂胶带前进,将另一个推进剂目标载入点火室。 推进剂胶带和点火室旨在确保每个点火事件与剩余的推进剂目标隔离。 可以通过改变同步的推进剂带/激光器速度来精确地控制推力和比冲量。 激光点火/消融推进系统可以缩放以用于小型和大型应用中。
    • 67. 发明授权
    • Circuit board cam-action standoff connector
    • 电路板凸轮动作支座连接器
    • US07394666B2
    • 2008-07-01
    • US10904276
    • 2004-11-02
    • David L. EdwardsRonald L. HeringDavid C. LongJason S. MillerCarl R. Peterson
    • David L. EdwardsRonald L. HeringDavid C. LongJason S. MillerCarl R. Peterson
    • H05K1/11
    • H05K7/142
    • A cam-action expanding standoff connector and related method are disclosed for mounting a circuit board. The standoff connector includes a body and a plurality of mounting members having interior longitudinally-extending camming portions for engagement by a cam. A cam is configured to be positioned within the mounting members in a first position in which the mounting members are not expanded against the interior of a mounting opening and in a second position in which the cam engages the camming portions to expand the plurality of mounting members against the interior of the mounting opening. Since the camming action is horizontal only (purely radial), practically no vertical forces are applied to the circuit board and a best-fit alignment between a circuit board and heatsink can be established and maintained.
    • 公开了一种用于安装电路板的凸轮动作扩展型支座连接器及相关方法。 支座连接器包括主体和多个安装构件,其具有用于由凸轮接合的内部纵向延伸的凸轮部分。 凸轮构造成在安装构件内定位在第一位置,在第一位置,安装构件不会抵靠安装开口的内部膨胀,并且在第二位置中凸轮接合凸轮部分以使多个安装构件 抵靠安装开口的内部。 由于凸轮作用仅仅是水平的(纯径向的),实际上没有垂直力施加到电路板上,并且可以建立和维持电路板和散热器之间的最佳配合。