AIRCRAFT PROPULSION SYSTEM COMPRISING A NACELLE EQUIPPED WITH AN IMPROVED ARTICULATION SYSTEM

    公开(公告)号:US20240239508A1

    公开(公告)日:2024-07-18

    申请号:US18411190

    申请日:2024-01-12

    CPC classification number: B64D29/06

    Abstract: A propulsion system comprising a chassis, a fan cowl, an articulation system fixed between the chassis and the fan cowl and comprising a shaft with two offset cylinders in which a central cylinder is movably mounted in rotation on the chassis and wherein a lateral cylinder is movably mounted in rotation on the fan cowl, a blocking device limits the rotation of the central cylinder relative to the chassis between a closed position and an intermediate position, and a stopping device allows rotation of the fan cowl between the intermediate position and the open position and preventing rotation of the fan cowl beyond the intermediate position.

    INTERNAL STRUCTURE OF A PRIMARY EXHAUST DUCT

    公开(公告)号:US20200232344A1

    公开(公告)日:2020-07-23

    申请号:US16743077

    申请日:2020-01-15

    Abstract: An internal structure of a primary exhaust duct of a turbomachine, the internal structure comprising a primary wall comprising a surface of revolution about a longitudinal axis, allowing the air to pass through orifices and forming an internal surface of the primary exhaust duct, an interior skin comprising a surface of revolution about the longitudinal axis, arranged inside the primary wall, an upstream flange and a downstream flange which attach the interior skin to the interior of the primary wall, at least one separator which is attached to the interior skin and which extends from the interior skin towards the primary wall, the, or each, separator extends in a plane generally parallel to the longitudinal axis, between the two flanges, and the, or each, separator is not attached to the primary wall.

    INTERNAL STRUCTURE OF A PRIMARY EXHAUST DUCT HAVING A SEPARATOR OF WHICH THE GEOMETRY VARIES DEPENDING ON THE TEMPERATURE

    公开(公告)号:US20210262364A1

    公开(公告)日:2021-08-26

    申请号:US17181566

    申请日:2021-02-22

    Abstract: An internal structure of a primary exhaust duct of a turbomachine, which has a primary wall allowing air to pass through orifices and forming an internal surface of the primary exhaust duct, an interior skin arranged inside the primary wall, and at least one separator of which a first edge region is attached to the interior skin and which has two geometries. A change from the first geometry to the second takes place when the temperature of the separator exceeds a first temperature, and the change from the second to the first takes place when the temperature of the separator drops below a second temperature. The coefficient of expansion of the separator is greater than that of the interior skin. The variation in the geometry of the separators depending on the temperature of the engine eases assembly at ambient temperature due to the compression of the separators.

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