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    • 116. 发明授权
    • Laser range estimation aid
    • 激光距离估计辅助
    • US06693702B2
    • 2004-02-17
    • US09953583
    • 2001-09-11
    • Mark Rogers
    • Mark Rogers
    • G01C300
    • G01C3/10
    • In order to judge range with the laser range estimation aid the lasers (1, 2 and 3) should be activated via the switch (8) and directed at the target of range desired. The lasers (1, 2 and 3) should produce a triangle pattern of dots. If there is an upright triangle (10, 11), then the target is below or closer that the zero range. If there is a single dot, then target is substantially at the zero range (12). If there is an inverted triangle (13, 14), then the target is above or further away from the zero range. Also, the size of the pattern produced can be found relative to the terrain which allows for further range calculation.
    • 为了通过激光距离估计辅助来判断范围,激光器(1,2和3)应该通过开关(8)被激活并且指向所需范围的目标。 激光器(1,2和3)应该产生一个点的三角形图案。 如果有一个直立的三角形(10,11),则目标在零范围之下或更近。 如果有一个点,则目标基本上在零范围(12)。 如果存在倒三角形(13,14),则目标在零范围之上或更远。 此外,可以相对于允许进一步范围计算的地形找到所生成的图案的尺寸。
    • 117. 发明授权
    • Overspeed detection techniques for gas turbine engine
    • 燃气轮机超速检测技术
    • US06321525B1
    • 2001-11-27
    • US09497558
    • 2000-02-03
    • David Mark Rogers
    • David Mark Rogers
    • F02C928
    • F02C9/28F01D17/06F05D2270/02F05D2270/021F05D2270/042G05B23/0235
    • Unique systems and methods are disclosed to detect and remediate an overspeed condition of a gas turbine engine. Such techniques include sensing rotational speed of a rotating member of a gas turbine engine and providing a first speed threshold that varies with rotational acceleration of this member over a predefined range. An overspeed condition of the gas turbine engine is detected if the rotational speed exceeds this first speed threshold and a second speed threshold. This second speed threshold is greater than or equal to the first speed threshold when the overspeed condition is detected. In response to the overspeed detection, a fuel valve may be actuated to adjust fuel flow to the engine. In one embodiment, an analog circuit compares the first and second speed thresholds to the rotational speed and controls current flow through an actuator for an overspeed fuel valve associated with the engine.
    • 公开了独特的系统和方法来检测和修复燃气涡轮发动机的超速状况。 这样的技术包括感测燃气涡轮发动机的旋转构件的旋转速度,并且提供随着该构件在预定范围内的旋转加速度而变化的第一速度阈值。 如果转速超过该第一速度阈值和第二速度阈值,则检测燃气涡轮发动机的超速状况。 当检测到超速状况时,该第二速度阈值大于或等于第一速度阈值。 响应于超速检测,可以启动燃料阀以调节到发动机的燃料流量。 在一个实施例中,模拟电路将第一和第二速度阈值与转速进行比较,并且控制通过用于与发动机相关联的超速燃料阀的致动器的电流。