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    • 2. 发明授权
    • Integrated pulsed propulsion system for microsatellite
    • 用于微卫星的集成脉冲推进系统
    • US6131385A
    • 2000-10-17
    • US912709
    • 1997-08-18
    • David H. Lewis, Jr.Erik K. Antonsson
    • David H. Lewis, Jr.Erik K. Antonsson
    • B64G1/00F02K9/94F02K99/00F03H99/00F15B15/14F03H5/00
    • F02K9/94F15B15/1471
    • A propulsion system and, in particular, a microthruster for a microsatellite. The microthruster may be formed as a resistojet type thruster formed with a chamber, closed by a diaphragm which acts as a blow-out disk. A fluid, such as an inert gas, is disposed within the chamber. Heating of the gas causes the gas pressure to increase until the diaphragm ruptures, which, in turn, causes the gas to flow out of the chamber, acting as a propellant, and providing a small unit force. The microthruster is adapted to be formed by known batch processing methods with 10.sup.4 -10.sup.6 microthrusters per wafer. The unit of force can be easily scaled by varying the number of microthruster 20 used for an application, the geometry of the chamber 22, as well as the type of fluid used within the chamber, to suit the microsatellite application.
    • 推进系统,特别是用于微卫星的微型推进器。 微型推进器可以形成为形成有腔室的再喷射式推进器,该室由作为吹出盘的隔膜封闭。 诸如惰性气体的流体设置在室内。 气体的加热导致气体压力增加,直到膜片破裂,这又导致气体流出室,用作推进剂,并提供小的单位力。 微型推杆适用于通过已知的批量处理方法形成,每个晶片具有104-106个微型推进器。 可以通过改变用于应用的微推力器20的数量,室22的几何形状以及室内使用的流体的类型来适应微卫星应用来容易地缩放力单位。
    • 5. 发明授权
    • Mems arm fire and safe and arm devices
    • 手臂防火,安全和手臂装置
    • US06431071B1
    • 2002-08-13
    • US09665230
    • 2000-09-18
    • Kathleen F. HodgeDavid H. Lewis, Jr.Steven D. NelsonVictor W. Ruwe
    • Kathleen F. HodgeDavid H. Lewis, Jr.Steven D. NelsonVictor W. Ruwe
    • F42C1526
    • F42C15/36F42C15/184F42C15/34F42C15/40
    • Miniature arm fire and safe and arm devices include an electrically operated pyrotechnic initiation device (5) to generate a detonation wave upon command and a movable pressure barrier (9) that blocks propagation of the detonation wave if the device is not intended to be fired and opens a window (12) to transfer the detonation wave externally of the device. The detonation wave may in alternate embodiments be a subsonic flame front and pressure wave or a supersonic shock wave, respectively. An electromagnet (7) may serve to move the pressure barrier. Detonation waves output from the device have application in igniting an explosive train, either directly or indirectly, the latter by operating an electrical switch. In the arm fire device, the barrier automatically prevents a detonation output when electrical power is removed from the device. In the safe and arm device, the barrier, once moved out of the way, remains out of the way, even when electrical power is removed. Various forms of miniature single operate electrical switches are described that may be operated by the foregoing devices.
    • 微型手臂式防火和安全和手臂装置包括电动式烟火引发装置(5),用于在命令时产生爆震波;以及可移动压力屏障(9),其阻止爆震波的传播,如果该装置不打算被点燃, 打开窗口(12)以将设备外部的爆震波转移。 在替代实施例中,爆震波分别是亚音速火焰前和压力波或超音速冲击波。 电磁体(7)可用于移动压力屏障。 从设备输出的爆震波可以通过操作电气开关直接或间接点燃爆炸火车。 在手臂消防装置中,当从设备中取出电力时,屏障自动防止爆震输出。 在安全和手臂装置中,障碍物一旦被移开,即使在电力消除的情况下仍然存在。 描述了可由前述装置操作的各种形式的微型单操作电开关。
    • 6. 发明授权
    • Micro pulsed plasma thruster and method of operating same
    • 微脉冲等离子体推进器及其运行方法
    • US06216445B1
    • 2001-04-17
    • US09315211
    • 1999-05-19
    • David C. ByersDavid H. Lewis, Jr.
    • David C. ByersDavid H. Lewis, Jr.
    • G21D100
    • F03H1/0087F03H1/0012
    • A pulse plasma thruster (50) utilizes a vapor producing solid (54) and a micro-sized heater (52) to produce a high pressure vapor that is directed into an ignition chamber (58) and to a thrust discharge chamber (70). The thrust discharge chamber (70) comprises two oppositely disposed electrode plates (72, 74) and oppositely disposed fuel propellants sources (60, 62). The passageway (56) leading from vapor producing solid (54) to the thrust discharge chamber (70) is configured to permit uniform feeding of the vapors to the thrust discharge chamber (70). A pair of electrode terminals (82, 84) extend from the electrode plates (72, 74) and through a housing (88). A power source (100) is coupled to the terminals (82, 84) and provides the ignition signals necessary to cause a spark and a breakdown to a useful plasma arc by controlling the voltage-current shape of the ignition signal.
    • 脉冲等离子体推进器(50)利用蒸汽产生固体(54)和微型加热器(52)来产生被引导到点火室(58)和推力释放室(70)中的高压蒸汽。 推力排放室(70)包括两个相对设置的电极板(72,74)和相对设置的燃料推进剂源(60,62)。 从产生气体的固体(54)引导到推力排出室(70)的通道(56)被构造成允许蒸汽均匀地进给推力排出室(70)。 一对电极端子(82,84)从电极板(72,74)延伸并穿过壳体(88)。 电源(100)耦合到端子(82,84),并且通过控制点火信号的电压 - 电流形状来提供引起火花和击穿有用等离子体电弧所必需的点火信号。