LAYUP OF TAIL ROTOR DRIVE SHAFT TUBES

    公开(公告)号:US20210156415A1

    公开(公告)日:2021-05-27

    申请号:US16694638

    申请日:2019-11-25

    Abstract: A composite shaft has a fiber orientation that is a combination of fibers perpendicular to each other and a longitudinal axis of the shaft; and a second composite layer disposed at an angle ranging between 25 to 45 degrees+/−3 degrees from the fibers in the first composite layer; a third composite layer disposed at an angle ranging between 7 to 13 degrees+/−3 degrees from the fibers in the second composite layer and each subsequent transition layer(s); a fourth composite layer disposed at an angle ranging between 25 to 45 degrees+/−3 degrees from the fibers in the third composite layer(s); and a fifth composite generally perpendicular +/−3 degrees to each other and the fibers in the fourth composite layer.

    Deployable Apparatus to Prevent Helicopter Rollover

    公开(公告)号:US20210024226A1

    公开(公告)日:2021-01-28

    申请号:US17069413

    申请日:2020-10-13

    Abstract: The present invention includes an apparatus for preventing aircraft rollover upon a water landing comprising: a deployable first and/or second boom affixed by a first end to the aircraft and capable of deployment substantially perpendicular to a longitudinal axis of the aircraft; and a first and/or second air bladder attached to a second end of the first and/or second boom, wherein the first and/or second air bladders are configured to inflate when an aircraft lands in the water, wherein deployment of the first and second boom and air bladder prevents aircraft rollover upon water landing; or a deployable keel affixed by a first end to the aircraft and capable of deployment substantially perpendicular to a longitudinal axis and opposite a rotor of the aircraft upon a water landing, wherein the keel is sized to prevent aircraft rollover upon deployment; or both.

    Deployable apparatus to prevent helicopter rollover

    公开(公告)号:US11618588B2

    公开(公告)日:2023-04-04

    申请号:US17069413

    申请日:2020-10-13

    Abstract: The present invention includes an apparatus for preventing aircraft rollover upon a water landing comprising: a deployable first and/or second boom affixed by a first end to the aircraft and capable of deployment substantially perpendicular to a longitudinal axis of the aircraft; and a first and/or second air bladder attached to a second end of the first and/or second boom, wherein the first and/or second air bladders are configured to inflate when an aircraft lands in the water, wherein deployment of the first and second boom and air bladder prevents aircraft rollover upon water landing; or a deployable keel affixed by a first end to the aircraft and capable of deployment substantially perpendicular to a longitudinal axis and opposite a rotor of the aircraft upon a water landing, wherein the keel is sized to prevent aircraft rollover upon deployment; or both.

    Gearbox internal sensor integration

    公开(公告)号:US11341790B2

    公开(公告)日:2022-05-24

    申请号:US16743988

    申请日:2020-01-15

    Abstract: An exemplary internal wireless sensor monitoring system includes a wireless sensor positioned inside of an enclosed housing to monitor a condition in the housing, a wireless gateway positioned outside of the housing, a gateway antenna located in the housing configured to wirelessly communicate with the wireless sensor, and a conductor extending through a penetration in the housing and connecting the gateway antenna and the wireless gateway.

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