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公开(公告)号：EP3922830A1
公开(公告)日：2021-12-15
申请号：EP21175541.8
申请日：2021-05-24
发明人： ZIELINSKI, Edward , DUTKA, Martin
摘要： A fuel metering system includes a metering valve having a first inlet fluidly coupled to a source of fluid at a first pressure, a second inlet, a first outlet and a second outlet. The metering valve includes a slot, and a valve body movable to control an amount of fluid supplied to the first and second outlet. The fuel metering system includes a servo valve fluidly coupled to the second inlet and to a second source of fluid at a second pressure. The servo valve is in fluid communication with the second inlet and a body of the servo valve is movable to supply a fluid to move the valve body. The slot is configured to variably restrict the flow of the fluid through the second outlet to balance a force applied by a biasing member. The fuel metering system includes a fixed flow restriction downstream of the second outlet.
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公开(公告)号：EP3290332A1
公开(公告)日：2018-03-07
申请号：EP17186225.3
申请日：2017-08-14
IPC分类号： B64C11/38 , B64C27/64 , F16K31/122
CPC分类号： B64C11/38 , B64C11/385 , B64C27/64
摘要： A propeller pitch control actuation system includes a relatively lightweight, relatively inexpensive means for selectively preventing the propeller pitch control actuator from commanding reverse pitch positions.
摘要翻译： 螺旋桨桨距控制致动系统包括用于选择性地防止螺旋桨桨距控制致动器命令反向俯仰位置的相对轻量，相对便宜的装置。
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公开(公告)号：EP3290332B1
公开(公告)日：2018-09-12
申请号：EP17186225.3
申请日：2017-08-14
IPC分类号： B64C11/38 , B64C27/64 , F16K31/122
CPC分类号： B64C11/38 , B64C11/385 , B64C27/64
摘要： A propeller pitch control actuation system includes a relatively lightweight, relatively inexpensive means for selectively preventing the propeller pitch control actuator from commanding reverse pitch positions.
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