公开(公告)号：US20170297685A1

公开(公告)日：2017-10-19

申请号：US15277756

申请日：2016-09-27

Applicant: Textron Innovations Inc.

Inventor： David Heverly ,  David A. Popelka ,  Frank B. Stamps

IPC: B64C27/00 ,  B64C11/00 ,  B64C29/00

CPC classification number: B64C27/001 ,  B64C11/008 ,  B64C29/0033 ,  B64C2027/003 ,  B64C2027/004 ,  B64C2027/005

Abstract: A vibration attenuator for an aircraft has at least one weight mounted in a rotating system of a rotor hub of the aircraft, each weight being rotatable about an axis of rotation of the hub relative to the hub and to each other weight. Drive means are provided for rotating each weight about the axis of rotation at a selected speed for creating oscillatory shear forces that oppose and attenuate rotor-induced vibrations having a selected frequency. A vertically oriented vibration attenuator is configured to oppose and attenuate vertical rotor induced oscillatory forces that would otherwise travel vertical down the rotor mast and into the airframe. A vibration attenuator having weights rotating about separate axes offset from each other.

公开(公告)号：US09452828B2

公开(公告)日：2016-09-27

申请号：US14231940

申请日：2014-04-01

Applicant: Textron Innovations Inc.

Inventor： David Heverly ,  David A. Popelka ,  Frank B. Stamps

IPC: B64C27/00 ,  B64C11/00 ,  B64C29/00

CPC classification number: B64C27/001 ,  B64C11/008 ,  B64C29/0033 ,  B64C2027/003 ,  B64C2027/004

Abstract: A vibration attenuator for an aircraft has at least one weight mounted in a rotating system of a rotor hub of the aircraft, each weight being rotatable about an axis of rotation of the hub relative to the hub and to each other weight. Drive means are provided for rotating each weight about the axis of rotation at a selected speed for creating oscillatory shear forces that oppose and attenuate rotor-induced vibrations having a selected frequency. A vertically oriented vibration attenuator is configured to oppose and attenuate vertical rotor induced oscillatory forces that would otherwise travel vertical down the rotor mast and into the airframe. A vibration attenuator having weights rotating about separate axes offset from each other.

Abstract translation: 用于飞行器的振动衰减器具有安装在飞行器的转子轮毂的旋转系统中的至少一个重量，每个重量可围绕毂相对于轮毂的旋转轴线和彼此的重量旋转。 提供驱动装置，用于以选定的速度围绕旋转轴线旋转每个重量，以产生相对于和衰减具有所选频率的转子引起的振动的振荡剪切力。 垂直取向的振动衰减器被配置为抵抗和衰减垂直的转子诱导的振荡力，否则其将沿着转子桅杆向下垂直移动并进入机体。 振动衰减器，其具有围绕彼此偏移的分离轴线旋转的重物。

公开(公告)号：US20140360830A1

公开(公告)日：2014-12-11

申请号：US14231940

申请日：2014-04-01

Applicant: Textron Innovations Inc.

Inventor： David Heverly ,  David A. Popelka ,  Frank B. Stamps

IPC: B64C27/00

CPC classification number: B64C27/001 ,  B64C11/008 ,  B64C29/0033 ,  B64C2027/003 ,  B64C2027/004

Abstract: A vibration attenuator for an aircraft has at least one weight mounted in a rotating system of a rotor hub of the aircraft, each weight being rotatable about an axis of rotation of the hub relative to the hub and to each other weight. Drive means are provided for rotating each weight about the axis of rotation at a selected speed for creating oscillatory shear forces that oppose and attenuate rotor-induced vibrations having a selected frequency. A vertically oriented vibration attenuator is configured to oppose and attenuate vertical rotor induced oscillatory forces that would otherwise travel vertical down the rotor mast and into the airframe. A vibration attenuator having weights rotating about separate axes offset from each other.

Abstract translation: 用于飞行器的振动衰减器具有安装在飞行器的转子轮毂的旋转系统中的至少一个重量，每个重量可围绕毂相对于轮毂的旋转轴线和彼此的重量旋转。 提供驱动装置，用于以选定的速度围绕旋转轴线旋转每个重量，以产生相对于和衰减具有所选频率的转子引起的振动的振荡剪切力。 垂直取向的振动衰减器被配置为抵抗和衰减垂直的转子诱导的振荡力，否则其将沿着转子桅杆向下垂直移动并进入机体。 振动衰减器，其具有围绕彼此偏移的分离轴线旋转的重物。

公开(公告)号：US10526076B2

公开(公告)日：2020-01-07

申请号：US15277756

申请日：2016-09-27

Applicant: Textron Innovations Inc.

Inventor： David Heverly ,  David A. Popelka ,  Frank B. Stamps

IPC: B64C27/00 ,  B64C11/00 ,  B64C29/00

Abstract: A vibration attenuator for an aircraft has at least one weight mounted in a rotating system of a rotor hub of the aircraft, each weight being rotatable about an axis of rotation of the hub relative to the hub and to each other weight. Drive means are provided for rotating each weight about the axis of rotation at a selected speed for creating oscillatory shear forces that oppose and attenuate rotor-induced vibrations having a selected frequency. A vertically oriented vibration attenuator is configured to oppose and attenuate vertical rotor induced oscillatory forces that would otherwise travel vertical down the rotor mast and into the airframe. A vibration attenuator having weights rotating about separate axes offset from each other.

公开(公告)号：US09139296B2

公开(公告)日：2015-09-22

申请号：US13933888

申请日：2013-07-02

Applicant: Textron Innovations Inc.

Inventor： David A. Popelka ,  Frank B. Stamps

IPC: B64C27/00 ,  B64C11/00 ,  B64C29/00

CPC classification number: B64C27/001 ,  B64C11/008 ,  B64C29/0033 ,  B64C2027/003

Abstract: A vibration attenuator for an aircraft has at least one weight mounted in a rotating system of a rotor hub of the aircraft, each weight being rotatable about an axis of rotation of the hub relative to the hub and to each other weight. Drive means are provided for rotating each weight about the axis of rotation at a selected speed for creating oscillatory shear forces that oppose and attenuate rotor-induced vibrations having a selected frequency. A vertically oriented vibration attenuator is configured to oppose and attenuate vertical rotor induced oscillatory forces that would otherwise travel vertical down the rotor mast and into the airframe.

Abstract translation: 用于飞行器的振动衰减器具有安装在飞行器的转子轮毂的旋转系统中的至少一个重量，每个重量可围绕毂相对于轮毂的旋转轴线和彼此的重量旋转。 提供驱动装置，用于以选定的速度围绕旋转轴线旋转每个重量，以产生相对于和衰减具有所选频率的转子引起的振动的振荡剪切力。 垂直取向的振动衰减器被配置为抵抗和衰减垂直的转子诱导的振荡力，否则其将沿着转子桅杆向下垂直移动并进入机体。

公开(公告)号：US20140286772A1

公开(公告)日：2014-09-25

申请号：US13933888

申请日：2013-07-02

Applicant: Textron Innovations Inc.

Inventor： David A. Popelka ,  Frank B. Stamps

IPC: B64C27/00

CPC classification number: B64C27/001 ,  B64C11/008 ,  B64C29/0033 ,  B64C2027/003

Abstract: A vibration attenuator for an aircraft has at least one weight mounted in a rotating system of a rotor hub of the aircraft, each weight being rotatable about an axis of rotation of the hub relative to the hub and to each other weight. Drive means are provided for rotating each weight about the axis of rotation at a selected speed for creating oscillatory shear forces that oppose and attenuate rotor-induced vibrations having a selected frequency. A vertically oriented vibration attenuator is configured to oppose and attenuate vertical rotor induced oscillatory forces that would otherwise travel vertical down the rotor mast and into the airframe.

Abstract translation: 用于飞行器的振动衰减器具有安装在飞行器的转子轮毂的旋转系统中的至少一个重量，每个重量可围绕毂相对于轮毂的旋转轴线和彼此的重量旋转。 提供驱动装置，用于以选定的速度围绕旋转轴线旋转每个重量，以产生相对于和衰减具有所选频率的转子引起的振动的振荡剪切力。 垂直取向的振动衰减器被配置为抵抗和衰减垂直的转子诱导的振荡力，否则其将沿着转子桅杆向下垂直移动并进入机体。