TURBOFAN ENGINE COMPRISING A SYSTEM FOR BLOCKING THE FLOW PATH OF THE BYPASS STREAM COMPRISING VEILS

    公开(公告)号:US20220228541A1

    公开(公告)日:2022-07-21

    申请号:US17580110

    申请日:2022-01-20

    Abstract: A turbofan engine with a nacelle and a flow path, in which the nacelle comprises a movable cowl that makes it possible to define a window between the flow path and the outside, veils with a first edge fixed to the movable cowl and alternately assuming a folded position or a deployed position across the flow path, and a pneumatic system displacing a second edge of the veils from the folded position to the deployed position and vice versa. The pneumatic system comprises a rigid main roll, for each veil, at least one extendable secondary roll fixed to a second edge of the veil, and a pressurization and depressurization system which, alternately, generates a pressure or a depression in each secondary roll. Replacing the reverse doors and their driving mechanisms with flexible veils and a pneumatic system allows for a weight reduction.

    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.

    JET ENGINE COMPRISING A NACELLE EQUIPPED WITH A THRUST REVERSING SYSTEM COMPRISING DOORS

    公开(公告)号:US20190178206A1

    公开(公告)日:2019-06-13

    申请号:US16209413

    申请日:2018-12-04

    Abstract: A engine comprising a fan casing and a nacelle, the nacelle comprising a fixed structure and a thrust reversing system having a mobile assembly with a mobile cowl and a frame. The mobile assembly is translationally mobile on the fixed structure between an advanced position and a retracted position to define a window between the secondary jet and the outside of the nacelle. Inner and outer doors are mounted articulated between a stowed position and a deployed position. For each pair of doors, a runner is translationally mobile between a first and a second position. The switching from the stowed position to the deployed position of each door is mechanically associated with the switching of the runner from the first position to the second position and vice versa. For each runner, an actuator ensures the translational displacement of the runner from the first position to the second position.

    PROPULSION ASSEMBLY FOR AN AIRCRAFT

    公开(公告)号:US20250027452A1

    公开(公告)日:2025-01-23

    申请号:US18772636

    申请日:2024-07-15

    Abstract: A propulsion assembly having a combustion chamber and a turbine, a nacelle with a front cowl facing the turbine, with a window passing through it, and a rear cowl to the rear of the turbine, a fire barrier between the front cowl and the rear cowl, a dihydrogen supply pipe meandering from the inside of the rear cowl, then in a sealed manner through the fire barrier, then through the window as far as the combustion chamber, wherein the supply pipe has an intermediate section between the fire barrier and the window, and a plate fastened in a sealed manner to the intermediate section and fastened in a sealed manner to the front cowl around the window.

    DIHYDROGEN SUPPLY SYSTEM FOR AN AIRCRAFT ENGINE

    公开(公告)号:US20240150033A1

    公开(公告)日:2024-05-09

    申请号:US18356655

    申请日:2023-07-21

    CPC classification number: B64D37/30 B64D37/005 F02C7/232

    Abstract: A supply system for an aircraft, wherein the supply system has a supply module with outlet pipes, feed pipes connected to dihydrogen tanks, and means for channeling the dihydrogen in the feed pipes towards the outlet pipes, a distribution module having introduction pipes connected to the outlet pipes via heaters, distribution pipes connected to an engine, and means for channeling the dihydrogen in the introduction pipes towards the distribution pipes, and a control unit which commands the means of the supply module and of the distribution module depending on the information provided by the detection means. Also an aircraft with such a supply system.

    POWERPLANT FOR AN AIRCRAFT
    30.
    发明公开

    公开(公告)号:US20240067355A1

    公开(公告)日:2024-02-29

    申请号:US18456587

    申请日:2023-08-28

    CPC classification number: B64D37/30 B64D27/12 B64D37/04

    Abstract: A powerplant for an aircraft, comprising a frame, a propulsion system comprising a core enclosed in a casing and comprising a combustion chamber and a turbine, a supply pipe for conveying dihydrogen to the combustion chamber and that snakes outside the casing running along the turbine before dropping down into the combustion chamber through the casing, and a protective cylinder fastened to the frame or to the casing by fastening means and positioned around the casing and between the supply pipe and the turbine. With such an arrangement, if a blade of the turbine became detached it would meet the protective cylinder blocking its path to the dihydrogen pipe and would thus be diverted or stopped.

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