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    • 2. 发明申请
    • CONTROL SYSTEM FOR CONTROLLING PROPELLER AIRCRAFT ENGINE DURING TAKEOFF
    • 起飞时控制螺旋桨飞机发动机的控制系统
    • WO2008105907A3
    • 2008-12-31
    • PCT/US2007074342
    • 2007-07-25
    • LOCKHEED CORPJOHNSON JAMES R
    • JOHNSON JAMES R
    • B64D31/06F02C9/28F02D29/02
    • F02C9/28
    • A control system 10 and method of controlling a propeller aircraft engine 20 during takeoff limits the amount of engine power developed at the very beginning of the takeoff in order to maximize thrust and minimize rollout distances. The control system 10 limits the amount of power developed by the engine 20, even in the face of a nominal demand by the pilot for maximum engine power. Instead, the control system provides something significantly less than full power at the beginning of takeoff and gradually increases the power developed by the engine 20 to full power as the airspeed increases. This gradual increase from partial engine power toward full power helps prevent stalling of the propeller, thereby maximizing the effectiveness of the propeller and engine 20 in assisting the aircraft to takeoff quickly. The control system 10 is particularly helpful for taking off from high-altitude runways.
    • 在起飞期间控制螺旋桨式飞机发动机20的控制系统10和方法限制了在起飞的最初开始时发动的发动机功率的量,以便使推力最大化并使推出距离最小化。 即使面对飞行员对最大发动机功率的名义需求,控制系统10也限制由发动机20产生的动力量。 相反,控制系统在起飞开始时提供显着小于全功率的功率,并随着空速增加逐渐将发动机20产生的功率增加到全功率。 从部分发动机功率逐渐增加到全功率有助于防止螺旋桨失速,从而最大化螺旋桨和发动机20在协助飞机快速起飞方面的有效性。 控制系统10特别有助于从高空跑道起飞。
    • 10. 发明申请
    • INTERFEROMETRIC ANTENNA ARRAY FOR WIRELESS DEVICES
    • 用于无线设备的干涉天线阵列
    • WO03090312A8
    • 2005-05-06
    • PCT/US0210686
    • 2002-04-05
    • MYERS JOHNSON INCMYERS STEVEN LJOHNSON JAMES R
    • MYERS STEVEN LJOHNSON JAMES R
    • H01Q1/24H01Q3/24H01Q21/29H04B1/38
    • H01Q3/24H01Q1/245H01Q21/29
    • An interferometric antenna array for use with a wireless communications device in reducing electromagnetic energy in a region proximate to the antenna array. The antenna array comprises two or more radiating elements coupled through circuitry to the wireless communications device. The circuitry operates to appropriately divide a signal from the communications device into a plurality of signals and to phase-shift the plurality of signals such that the electromagnetic wave pattern formed proximate to the antenna array by the two or more radiating elements, which are fed by the phase-shifted plurality of signals, includes a spatial null. The spatial null is located at a region where sensitive electronic equipment, or some portion of a user of the communications device is also located.
    • 一种与无线通信设备一起使用以减少靠近天线阵列的区域中的电磁能量的干涉天线阵列。 天线阵列包括通过电路耦合到无线通信设备的两个或多个辐射元件。 电路操作以将来自通信设备的信号适当地划分为多个信号并且相移多个信号,使得由两个或更多个辐射元件靠近天线阵列形成的电磁波图案由两个或更多个辐射元件馈送, 相移的多个信号包括空间零点。 空间空白位于敏感电子设备或通信设备的用户的某些部分也位于的区域。