TURBOFAN COMPRISING A SYSTEM COMPRISING SCREENS FOR CLOSING OFF THE BYPASS DUCT

    公开(公告)号:US20210207557A1

    公开(公告)日:2021-07-08

    申请号:US17140717

    申请日:2021-01-04

    Abstract: A turbofan having a nacelle delimiting a duct for a bypass flow and including a fixed structure including a guide vane support with guide vanes, a mobile cowl movable in translation between an advanced position and a retracted position, arms, each one being mobile in rotation on the guide vane support between a stowed position and a deployed position and comprising a distal end and a proximal end, for each pair of adjacent arms, a flexible screen extending angularly between the two arms, and of which an exterior edge is attached to the guide vane support, and wherein the distal end of each arm is fixed along the interior edge, a link rod mounted articulated between the distal ends, actuators to cause the mobile cowl to move, and an operating system which moves each arm. Such an arrangement allows a reduction in weight.

    TURBOFAN COMPRISING A SYSTEM COMPRISING A SCREEN FOR CLOSING OFF THE BYPASS DUCT

    公开(公告)号:US20210207556A1

    公开(公告)日:2021-07-08

    申请号:US17140707

    申请日:2021-01-04

    Abstract: A turbofan has a nacelle delimiting a duct for a bypass flow and comprises a fixed structure comprising a guide vane support with guide vanes, a mobile cowl able to move in translation between an advanced position and a retracted position, arms, 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, of which an exterior edge is attached to the guide vane support rearward of the guide vanes, and wherein the distal end of each arm is fixed along the interior edge, actuators to cause the mobile cowl to move, and an operating system which moves each arm. Replacing the reversal doors and their drive mechanisms with the flexible screen and the set of rotationally-mobile arms allows a reduction in weight.

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