A turbofan (100) has a nacelle (102) delimiting a duct (204) for a bypass flow (208) and comprises a fixed structure (206) comprising a guide vane support (218) with guide vanes (219), a mobile cowl (216) able to move in translation between an advanced position and a retracted position, arms (250), each one being mobile in rotation between a stowed position and a deployed position and comprising a distal end and a proximal end, a flexible screen (252) , of which an exterior edge is attached to the guide vane support (218) rearward of the guide vanes (221), and wherein the distal end of each arm (250) is fixed along the interior edge, actuators to cause the mobile cowl (216) to move, and an operating system which moves each arm (250). Replacing the reversal doors and their drive mechanisms with the flexible screen and the set of rotationally-mobile arms allows a reduction in weight.
一种涡轮风扇发动机(100),其具有界定用于旁通流(208)的管道(204)的发动机短舱(102),并且发动机短舱包括固定结构(206),该固定结构包括具有引导叶片(219)的引导叶片支撑件(218);能够在前进位置和缩回位置之间平移运动的移动风罩(216);多个臂(250),每个臂在收起位置和展开位置之间可旋转移动,并且包括远端和近端;柔性罩(252),其外边缘附连到在引导叶片(221)后面的引导叶片支撑件(218),并且其中每个臂(250)的远端沿着内边缘固定;致动器,用于使移动风罩(216)运动;以及操作系统,该操作系统使每个臂(250)运动。用柔性罩和成组的旋转移动臂替换反向门及其驱动机构实现了重量的减少。
TURBOFAN COMPRISING A SYSTEM COMPRISING A SCREEN FOR CLOSING OFF THE BYPASS DUCT
包括具有用于封闭旁通管道的罩系统的涡轮风扇发动机
2021-07-06
Patent
Electronic Resource
Chinese
IPC: | B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT |
Turbofan comprising a set of rotatable blades for blocking off the bypass flow duct
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