TURBOFAN COMPRISING A SERIES OF ROTATABLE BLADES FOR BLOCKING OFF THE BYPASS FLOW DUCT

    公开(公告)号:US20190284952A1

    公开(公告)日:2019-09-19

    申请号:US16281593

    申请日:2019-02-21

    IPC分类号: F01D17/16 F02C3/06

    摘要: A turbofan with a fan casing and a nacelle which comprises a fixed structure, a movable assembly with a movable cowl and a slide, which is translationally movable between an advanced position and a retreated position in which the movable cowl is moved away from the fan casing in order to define a window open between a duct and the outside of the nacelle, a plurality of blades, each being mounted rotatably on the slide, where each blade is movable between a retracted position in which the blade is outside of the duct and a deployed position in which the blade is across the duct, a set of actuators for moving the slide and an operating system configured to move each blade from the retracted position to the deployed position, and vice versa.

    AIRCRAFT TURBOFAN HAVING A COWL ARTICULATED IN ROTATION AND A SYSTEM FOR DEPLOYING SAID COWL

    公开(公告)号:US20220106927A1

    公开(公告)日:2022-04-07

    申请号:US17488725

    申请日:2021-09-29

    IPC分类号: F02K7/08 F04D29/52

    摘要: A turbofan having a fixed structure, a fan, a fan casing surrounding the fan, an outer cowl disposed around the fan casing and mounted so as to be articulated on the fixed structure, and a deployment system that moves the outer cowl from a closed position to an open position. The deployment system has a guide rail fastened around the fan casing, a slider that is able to move along the guide rail and has a shoe. An activation system of the deployment system moves the slider and the shoe alternately in one direction or the other along the guide rail. One end of an arm of the deployment system is mounted to be articulated on the shoe and another end is mounted to be articulated on the outer cowl. Such a motorized deployment system makes it possible to save space and mass in the turbofan.

    TURBOFAN ENGINE COMPRISING A SET OF ROTATABLE BLADES FOR BLOCKING OFF THE BYPASS FLOW DUCT AND REDIRECTING THE AIR FLOW

    公开(公告)号:US20210285372A1

    公开(公告)日:2021-09-16

    申请号:US17199960

    申请日:2021-03-12

    IPC分类号: F02C6/20 F02C9/18 F04D29/52

    摘要: An engine including a motor and a nacelle and a duct between the nacelle and the motor. The nacelle includes a fixed structure, a mobile assembly that is mobile between an advanced position and a retracted position to define a window between the duct and the outside, and a plurality of blades that are mobile in rotation between a stowed position and a deployed position, each one extending on either side of its axis of rotation with a first arm and a second arm. In the stowed position, the first arm is outside the duct and the second arm is inside the nacelle, and where, in the deployed position, the first arm is across the duct and the second arm projects out of the nacelle. With such blades, the flow of air is optimally directed towards the front without it being necessary to provide cascades.

    TURBOFAN COMPRISING A SET OF ROTATABLE BLADES FOR BLOCKING OFF THE BYPASS FLOW DUCT

    公开(公告)号:US20200325785A1

    公开(公告)日:2020-10-15

    申请号:US16839437

    申请日:2020-04-03

    IPC分类号: F01D7/00 F01D25/24 F01D5/02

    摘要: A turbofan having a nacelle comprising a slider mobile in translation between advanced position and retracted positions to open a window between a duct and the exterior, a plurality of blades, each one being rotatably mobile on the slider between stowed and deployed positions, and a maneuvering system moving each blade and comprising for each blade, a shaft rotatably mobile on the slider and onto which the blade is fixed, for each shaft, a balance beam fixed to the shaft and having first and second ends, for three consecutive balance beams, two connecting rods where the first connecting rod is mounted articulated between the first balance beam and the second balance beam, and where the second connecting rod is mounted articulated between the second balance beam and the third balance beam, and an actuation system rotating one of the connecting rods in one direction and in the other.

    TURBOJET ENGINE COMPRISING A NACELLE EQUIPPED WITH A FAN CASE AND WITH A FIXED STRUCTURE

    公开(公告)号:US20190283892A1

    公开(公告)日:2019-09-19

    申请号:US16274601

    申请日:2019-02-13

    IPC分类号: B64D29/06 B64D27/18 F02K3/06

    摘要: A turbojet engine comprising an engine, a nacelle comprising a fan case, an intermediate case having a part forming a hub and an outer shroud radially spaced away from the hub by a secondary, or bypass, flow path and fixed to the hub via arms, in which the outer shroud is situated to the rear and in the continuity of the fan case, a fixed structure fixed to the outer shroud, a mobile assembly mounted with the ability to effect translational movement on the fixed structure, and a ramp fixed to the outer shroud and configured to direct the secondary or bypass flow to exit the outer shroud. Such a turbojet engine makes it possible to simplify assembly and among other things, makes it possible to fix the ramp directly to the outer shroud.

    TURBOFAN COMPRISING A SET OF ROTATABLE BLADES FOR BLOCKING OFF THE BYPASS FLOW DUCT

    公开(公告)号:US20200325848A1

    公开(公告)日:2020-10-15

    申请号:US16845224

    申请日:2020-04-10

    IPC分类号: F02K1/09 F02C7/057 F02C7/042

    摘要: A turbofan having a nacelle including a slider translationally mobile to open a window between a duct and the exterior, a plurality of blades, each rotationally mobile on the slider, and a maneuvering system moving each blade and comprising for each blade, a shaft rotationally mobile on the slider and onto which the blade is fixed, an arm having a first end fixed to the shaft, an arc coaxial with the longitudinal axis, mounted rotationally mobile on the slider about the longitudinal axis, a rectilinear rod fixed by its base to the arc, the rectilinear rod inserted into a through-bore of a stock, wherein the stock is mounted translationally free relative to the rectilinear rod, and the stock is mounted rotationally free on the arm at its second end about a rocking axis parallel to the rotational axis, and an actuation system producing arc rotation in two opposite directions.

    TURBOFAN COMPRISING A NACELLE EQUIPPED WITH A REVERSER SYSTEM AND A MOBILE CASCADE GRILL

    公开(公告)号:US20200318574A1

    公开(公告)日:2020-10-08

    申请号:US16832344

    申请日:2020-03-27

    IPC分类号: F02K1/72

    摘要: A turbofan with a secondary duct and including a fixed structure and a mobile assembly including a frame with openwork regions. The mobile assembly is translatable between advanced and retracted positions. The openwork regions are positioned across the window in the retracted position. A plurality of blocking doors is provided, each being mobile between stowed and deployed positions. An array of rams move the mobile assembly. A cascade grille mounts on the frame across the openwork region. The grille slides on the frame parallel to the translational direction. For each grille, a rear stop limits rearward movement, and a compression spring pushes the grille to the rear for abutment against a rear stop. For each grille, the fixed structure comprises a stop element against which the grille abuts upon movement from the advanced position to the retracted position.

    JET ENGINE COMPRISING A NACELLE EQUIPPED WITH REVERSER FLAPS PROVIDED WITH VORTEX-GENERATING MEANS

    公开(公告)号:US20200025141A1

    公开(公告)日:2020-01-23

    申请号:US16431173

    申请日:2019-06-04

    IPC分类号: F02K1/72 F02K1/76

    摘要: A turbofan comprising a motor and a nacelle, surrounding the motor, where a duct for a bypass flow is delimited between the nacelle and the motor and in which a flow of air flows. The nacelle comprises reverser flaps where each one is articulated between a stowed position in which it is not in the bypass duct and a deployed position in which it is across the bypass duct. The turbofan has at least one reverser flap with at least one leakage window configured to allow airflow in the deployed position. The at least one reverser flap has at least one fin extending across the leakage window.