Puck cover
    41.
    发明授权

    公开(公告)号:US10926861B2

    公开(公告)日:2021-02-23

    申请号:US15997547

    申请日:2018-06-04

    Abstract: In an example, a puck configured to be embedded in a structure of a rotorcraft creates a cavity in the structure and includes an attachment post for coupling a component to the structure in which the puck is embedded. A puck cover can be configured to cover the cavity in the structure and the puck cover can include a top cover surface to cover the cavity, a center support, and plurality of extensions, where the plurality of extensions coupled with the attachment post.

    Conversion actuator and downstop striker fitting for a tiltrotor aircraft

    公开(公告)号:US10913542B2

    公开(公告)日:2021-02-09

    申请号:US16047503

    申请日:2018-07-27

    Abstract: A wing is provided in one example embodiment and may include an outboard rib; a proprotor gearbox, wherein the proprotor gearbox is located inboard of the outboard rib; a fitting attached to the proprotor gearbox; and a conversion actuator, wherein the conversion actuator is attached to the wing and is mechanically coupled to the fitting. The wing may further include a downstop striker in which the downstop striker may be mounted to the fitting and the downstop striker may be between the proprotor gearbox and the conversion actuator. The wing may further include a downstop mounted on a top side of the outboard rib, wherein the downstop and the downstop striker are aligned to be in contact when the proprotor gearbox is positioned in an airplane mode.

    Methods for forming composite structures

    公开(公告)号:US10899084B2

    公开(公告)日:2021-01-26

    申请号:US16036228

    申请日:2018-07-16

    Abstract: A method is provided in one example embodiment and may include forming a ply stack comprising a plurality of uncured composite plies, wherein one or more uncured composite ply of the plurality of uncured composite plies comprises a plurality of perforations that extend, at least partially, through a thickness of the one or more uncured composite ply; and compacting the ply stack to form a composite structure. The plurality of perforations may provide paths for volatiles to be removed through the thickness of the one or more uncured composite ply of the ply stack during the compacting. Volatiles may also be removed through edges of the ply stack during the compacting. In some instances, all uncured composite plies of the ply stack may include a plurality of perforations that extend, at least partially, through the thickness of each uncured composite ply.

    Method of blade fold for tiltrotor aircraft

    公开(公告)号:US10858094B2

    公开(公告)日:2020-12-08

    申请号:US16030406

    申请日:2018-07-09

    Abstract: A method of blade fold for a tiltrotor aircraft includes configuring the tiltrotor aircraft in a flight ready position with a rotor system in an inverted-Y position, unlocking a first rotor blade of the rotor system to permit the first rotor blade to pivot relative to a yoke of the rotor system, restraining the first rotor blade to allow the first rotor blade to pivot relative to the yoke as the yoke is rotated, rotating the rotor system in a first direction so that the first rotor blade pivots closer to a second rotor blade, rotating the rotor system in a second direction to orient the rotor system into a modified inverted-Y position, unlocking a third rotor blade to allow the third rotor blade to pivot relative to the yoke as the yoke is rotated, and rotating the rotor system in the second direction so that the third rotor blade pivots closer to the second rotor blade.

    Helicopter skid landing gear
    46.
    发明授权

    公开(公告)号:US10858091B2

    公开(公告)日:2020-12-08

    申请号:US16047907

    申请日:2018-07-27

    Abstract: In a first aspect, there is a helicopter skid landing gear assembly including a front cross tube configured to interconnect two skid tubes; and a rear cross tube configured to interconnect two skid tubes; wherein at least one of the cross tubes comprises a monolithic metallic tube having a cross-section with a round exterior shape and an elliptical hollow portion therein. In a second aspect, there is a method for retrofitting a helicopter with a landing gear assembly; the method including providing a front cross tube and a rear cross tube, at least one of the front cross tube and the rear cross tube comprises a monolithic metallic tube having a cross-section with a substantially round exterior shape and an elliptical hollow portion therein; and connecting the front cross tube and rear cross tube to a fuselage.

    Angle-Of-Attack Flight Computer Systems and Methods

    公开(公告)号:US20200348695A1

    公开(公告)日:2020-11-05

    申请号:US16399893

    申请日:2019-04-30

    Abstract: According to one implementation of the present disclosure, a method for determining angle-of-attack for an unpowered vehicle is disclosed. The method includes: determining a monotonic portion of a look-up curve of an angle-of-attack operating plot; during flight, determining, by an accelerometer disposed on the unpowered vehicle, first and second accelerometer outputs, where the first and second accelerometer outputs correspond to first and second body-fixed load factor measurements, respectively; determining an operating point on the monotonic portion by applying a quotient of the first and second accelerometer outputs to the angle-of-attack operating plot; and determining an angle-of-attack parameter corresponding to the determined operating point.

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