公开(公告)号：US20180194462A1

公开(公告)日：2018-07-12

申请号：US15401233

申请日：2017-01-09

Applicant: Bell Helicopter Textron Inc.

Inventor： Drew Alan Sutton ,  Frank Brad Stamps

IPC: B64C27/72 ,  B64C27/78 ,  B64C27/48 ,  B64C27/82 ,  B64C27/59

CPC classification number: B64C27/72 ,  B64C27/43 ,  B64C27/48 ,  B64C27/59 ,  B64C27/78 ,  B64C27/82 ,  B64C2027/8227

Abstract: The present invention includes a rotor hub system, comprising: a teetering rotor hub disposed about a mast, the teetering rotor hub comprising: a first and a second yoke; each connected to a set of rotor blades, wherein the second set of rotor blades and the first set of rotor blades are disposed in a common plane, but the first and the second yoke do not come in contact.

公开(公告)号：US10550907B2

公开(公告)日：2020-02-04

申请号：US15240797

申请日：2016-08-18

Applicant: Bell Helicopter Textron, Inc.

Inventor： Michael Scott Seifert ,  Frederick Sullivan Gay ,  Dalton T. Hampton ,  Frank Brad Stamps

IPC: F16F7/10 ,  B64C27/00 ,  B64D35/00

Abstract: A liquid inertia vibration elimination (LIVE) system having an upper end cap, a lower end cap, a spindle located between the upper end cap and the lower end cap, and an external tube connected between the upper end cap and the lower end cap.

公开(公告)号：US20180051765A1

公开(公告)日：2018-02-22

申请号：US15240797

申请日：2016-08-18

Applicant: Bell Helicopter Textron, Inc.

Inventor： Michael Scott Seifert ,  Frederick Sullivan Gay ,  Dalton T. Hampton ,  Frank Brad Stamps

IPC: F16F7/10 ,  B64C27/00 ,  B64D35/00

Abstract: A liquid inertia vibration elimination (LIVE) system having an upper end cap, a lower end cap, a spindle located between the upper end cap and the lower end cap, and an external tube connected between the upper end cap and the lower end cap.

公开(公告)号：US10562617B2

公开(公告)日：2020-02-18

申请号：US15350073

申请日：2016-11-13

Applicant: Bell Helicopter Textron, Inc.

Inventor： Jouyoung Jason Choi ,  David Heverly ,  Michael Seifert ,  Michael Smith ,  Frank Brad Stamps ,  Thomas Parham, Jr. ,  Amarjit Olenchery Kizhakkepat

IPC: B64C27/00 ,  B64C29/00

Abstract: A vibration attenuation system for attenuating vibrations in a mast of an aircraft includes a weight attached to the mast but free to orbit about the mast. The weight can be comprised of one or more weight assemblies. Embodiments can include a single weight, or plural weight assemblies wherein each weight assembly can include a mechanical interconnecting mechanism so that each weight assembly receives feedback regarding the position and movement of one or more other weight assemblies. Each weight can be associated with a spring that urges the weight towards a neutral position. Rotation of the mast can cause the weight to orbit about the mast and self-excite such that the weight acts against the urging of the spring towards an attenuating position.

公开(公告)号：US20170259911A1

公开(公告)日：2017-09-14

申请号：US15350073

申请日：2016-11-13

Applicant: Bell Helicopter Textron, Inc.

Inventor： Jouyoung Jason Choi ,  David Heverly ,  Michael Seifert ,  Michael Smith ,  Frank Brad Stamps ,  Thomas Parham, JR. ,  Amarjit Olenchery Kizhakkepat

IPC: B64C27/00

Abstract: A vibration attenuation system for attenuating vibrations in a mast of an aircraft includes a weight attached to the mast but free to orbit about the mast. The weight can be comprised of one or more weight assemblies. Embodiments can include a single weight, or plural weight assemblies wherein each weight assembly can include a mechanical interconnecting mechanism so that each weight assembly receives feedback regarding the position and movement of one or more other weight assemblies. Each weight can be associated with a spring that urges the weight towards a neutral position. Rotation of the mast can cause the weight to orbit about the mast and self-excite such that the weight acts against the urging of the spring towards an attenuating position.