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    Sleeved bolt assemblies for aircraft engine mount assemblies
    1.
    发明授权
    Sleeved bolt assemblies for aircraft engine mount assemblies 有权

    公开(公告)号：US10220951B2

    公开(公告)日：2019-03-05

    申请号：US15410706

    申请日：2017-01-19

    Applicant: Bell Helicopter Textron Inc.

    Inventor： Bruce Bennett Bacon ,  Michael Edwin Rinehart ,  Thomas Boudreau

    IPC: B64D27/26 ,  B64C29/00 ,  F02C7/20 ,  F16F15/06 ,  B64C27/00 ,  B64D27/00 ,  B64D29/02 ,  F16B2/06 ,  B64D27/10 ,  F16F1/16

    Abstract: A rotorcraft, such as a tiltrotor aircraft having helicopter and airplane modes, includes an airframe, an engine and an engine mount assembly for coupling the engine to the airframe. The engine includes an engine lug forming an aperture. The engine mount assembly includes a mount having an aperture substantially aligned with the engine lug aperture. A sleeved bolt assembly extends through the apertures to secure the engine lug to the mount. The sleeved bolt assembly includes a bolt undersized relative to the apertures forming a circumferential gap within the apertures, a sleeve disposed around at least a portion of the bolt substantially filling the circumferential gap and a nut adapted to thread onto a threaded portion of the bolt. The use of the undersized bolt within the sleeve permits increased clearance between the sleeved bolt assembly and the engine while maintaining strength requirements in high load environments.

    Engine Mount Assemblies for Aircraft
    2.
    发明申请
    Engine Mount Assemblies for Aircraft 审中-公开

    公开(公告)号：US20170217595A1

    公开(公告)日：2017-08-03

    申请号：US15409971

    申请日：2017-01-19

    Applicant: Bell Helicopter Textron Inc.

    Inventor： Tyler Wayne Baldwin ,  John Elton Brunken, JR. ,  Matthew Carl VanBuskirk ,  Bart Marcus Shafer ,  Bruce Bennett Bacon

    IPC: B64D27/26 ,  B64D27/12 ,  B64C29/00

    CPC classification number: B64D27/26 ,  B64C27/28 ,  B64C29/0033 ,  B64D27/12 ,  B64D2027/262

    Abstract: An engine mount assembly for coupling an engine to an airframe includes a torsion bar, a lateral movement control assembly and a vertical movement control assembly. The torsion bar has a torsional stiffness and is coupled between the engine and the airframe such that torsional movement of the engine causes torsion in the torsion bar. The lateral movement control assembly has a lateral stiffness and is coupled between the torsion bar and the airframe such that lateral movement of the engine causes rotation of the torsion bar which reacts on lateral movement control assembly. The vertical movement control assembly has a vertical stiffness and is coupled between the engine and the airframe such that vertical movement of the engine reacts on the vertical movement control assembly. The engine mount assembly, thereby enables torsional, lateral and vertical movement of the engine to be independently controlled.

    Engine mount assemblies for aircraft
    7.
    发明授权
    Engine mount assemblies for aircraft 有权

    公开(公告)号：US10384790B2

    公开(公告)日：2019-08-20

    申请号：US15409971

    申请日：2017-01-19

    Applicant: Bell Helicopter Textron Inc.

    Inventor： Tyler Wayne Baldwin ,  John Elton Brunken, Jr. ,  Matthew Carl VanBuskirk ,  Bart Marcus Shafer ,  Bruce Bennett Bacon

    IPC: B64D27/26 ,  B64C29/00 ,  B64D27/12 ,  B64C27/28

    Abstract: An engine mount assembly for coupling an engine to an airframe includes a torsion bar, a lateral movement control assembly and a vertical movement control assembly. The torsion bar has a torsional stiffness and is coupled between the engine and the airframe such that torsional movement of the engine causes torsion in the torsion bar. The lateral movement control assembly has a lateral stiffness and is coupled between the torsion bar and the airframe such that lateral movement of the engine causes rotation of the torsion bar which reacts on lateral movement control assembly. The vertical movement control assembly has a vertical stiffness and is coupled between the engine and the airframe such that vertical movement of the engine reacts on the vertical movement control assembly. The engine mount assembly, thereby enables torsional, lateral and vertical movement of the engine to be independently controlled.

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