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    • 1. 发明申请
    • VECTORING NOZZLE CONTROL SYSTEM
    • 传感器喷嘴控制系统
    • WO00005496A1
    • 2000-02-03
    • PCT/US1999/010560
    • 1999-05-13
    • F02K1/00F02K1/12F02K1/15
    • F02K1/1292F02K1/008F02K1/15F05D2200/26
    • A method controls the stroke of three circumferentially spaced apart actuators attached at respective joints to an actuation ring positionable to vector thrust in a gas turbine engine exhaust nozzle. The circumferential angular location of each of the actuator joints is specified and, the stroke for each of the actuators is independently calculated using the joint locations in response to pitch and yaw commands. The actuators are then operated to effect the respective strokes therefor to position the nozzle. In a preferred embodiment, the angular locations are specified once, and trigonometric functions thereof are calculated and stored in memory. The stored values may then be used subsequently in calculating stroke as the pitch and yaw commands change.
    • 一种方法控制附接在各个接头处的三个周向间隔开的致动器的行程,以致可定位成在燃气涡轮发动机排气喷嘴中矢量推力的致动环。 规定每个致动器接头的周向角位置,并且根据俯仰和偏航指令,使用接合位置独立地计算每个致动器的行程。 然后操作致动器以实现相应的行程以定位喷嘴。 在优选实施例中,角度位置被指定一次,并且其三角函数被计算并存储在存储器中。 随后随着俯仰和偏航指令的改变,随后可以使用所存储的值来计算行程。
    • 3. 发明申请
    • SECONDARY NOZZLE FOR JET ENGINE
    • 喷气发动机二次喷嘴
    • WO2015012920A2
    • 2015-01-29
    • PCT/US2014035499
    • 2014-04-25
    • GEN ELECTRIC
    • DAWSON DAVID LYNNLARIVIERE ERIN LEEPETERSEN BRIAN JOSEPHELLERHORST ROBERT JEROME
    • F02K3/075
    • F02K3/077F02K1/1292F02K1/822F02K3/025F02K3/075Y02T50/672Y02T50/675
    • A third stream duct producing a third air stream at reduced pressure that is exhausted through a separate nozzle that is concentric with the main or primary engine nozzle. The third stream exhaust air from the separate concentric, nozzle is exhausted to a location at which pressure is ambient or sub-ambient. The location at which the third stream air is exhausted contributes to the thrust of the aircraft. The airstream from the third air duct is exhausted through an exhaust nozzle of the third duct that is positioned at the interface between the aft of the airframe and the leading edge of the engine outer flaps. This location is a low pressure region that has a recirculation zone. The exhaust of third stream air to this low pressure region substantially reduces or eliminates this recirculation zone and associated boat tail drag, thereby improving the efficiency of the engine.
    • 第三流管道,其在减压下产生通过与主发动机喷嘴或主发动机喷嘴同心的单独喷嘴排出的第三气流。 来自分离的同心喷嘴的第三流排气被排出到压力为环境或亚环境的位置。 第三流空气排出的位置有助于飞机的推力。 来自第三空气管道的气流通过位于机身后部与发动机外翼片前缘之间的界面处的第三管道的排气喷嘴排出。 该位置是具有再循环区域的低压区域。 向该低压区域排出第三流空气基本上减少或消除了该再循环区域和相关联的船尾阻力,从而提高了发动机的效率。
    • 4. 发明申请
    • TURBOFAN ENGINE INCLUDING THIRD FLOWPATH EXHAUST NOZZLE
    • 涡轮发动机,包括第三个流量排气喷嘴
    • WO2014130361A1
    • 2014-08-28
    • PCT/US2014/016509
    • 2014-02-14
    • UNITED TECHNOLOGIES CORPORATION
    • ROBERGE, Gary D.
    • F02K1/12F02K1/38F02K3/02F01D17/14
    • F02K1/1207F02K1/008F02K1/1292F02K1/38F02K3/02F02K3/075F02K3/077F05D2240/128F05D2250/36
    • A turbofan engine that includes a first flowpath, a second flowpath, a third flowpath, and a third flowpath exhaust nozzle is provided. The first flowpath is radially inboard of the second flowpath at a location upstream of a core section of the turbofan engine. The third flowpath is radially outboard of the second flowpath at the location upstream of the core section. The third flowpath exhaust nozzle defines a plurality of third flowpath exhaust exit ports through which gas traveling along the third flowpath may be discharged. An area or a geometry of each of the plurality of third flowpath exhaust exit ports is independently and selectively adjustable. A method for operating the turbofan engine includes independently and selectively adjusting an area or a geometry of at least one of the plurality of third flowpath exhaust exit ports to achieve a desired engine operation.
    • 提供了包括第一流路,第二流路,第三流路和第三流路排气喷嘴的涡轮风扇发动机。 第一流路在涡轮风扇发动机的核心部分的上游的位置处径向地位于第二流动路径的内侧。 第三流路径位于第二流路径的外侧,位于核心部分的上游位置处。 第三流路排气喷嘴限定了多个第三流路排气出口,通过该排出口可以排出沿第三流路行进的气体。 多个第三流路排出口中的每一个的区域或几何形状是可独立且有选择地调节的。 用于操作涡扇风扇发动机的方法包括独立地和选择性地调节多个第三流路排气出口中的至少一个的面积或几何形状,以实现期望的发动机操作。