公开(公告)号：US20180370621A1

公开(公告)日：2018-12-27

申请号：US16054606

申请日：2018-08-03

Applicant: Bell Helicopter Textron Inc.

Inventor： David E. Heverly, II ,  Jeremy DeWaters ,  Frank B. Stamps

IPC: B64C27/00 ,  B64C29/00

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

Abstract: A vibration control system for a rotor hub provides vibration attenuation in an aircraft by reducing the magnitude of rotor induced vibratory. The system can include a force generating device attached to a rotor hub which rotates along with the rotor at the rotational speed of the rotor. Vibratory shear force is generated by rotating unbalanced weights each about an axis non-concentric with the rotor hub axis at high speed to create large centrifugal forces. The rotational speed of the weights can be a multiple of the rotor rotational speed to create shear forces for canceling rotor induced vibrations. The amplitude of the generated shear force is controlled by indexing the positions of the unbalanced weights relative to each other, while the phase of the shear force is adjusted by equally phasing each weight relative to the rotor.

公开(公告)号：US20150203196A1

公开(公告)日：2015-07-23

申请号：US14600180

申请日：2015-01-20

Applicant: Bell Helicopter Textron Inc.

Inventor： David E. Heverly, II ,  Jeremy DeWaters ,  Frank B. Stamps

IPC: B64C27/00

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

Abstract: A vibration control system for a rotor hub provides vibration attenuation in an aircraft by reducing the magnitude of rotor induced vibratory. The system can include a force generating device attached to a rotor hub which rotates along with the rotor at the rotational speed of the rotor. Vibratory shear force is generated by rotating unbalanced weights each about an axis non-concentric with the rotor hub axis at high speed to create large centrifugal forces. The rotational speed of the weights can be a multiple of the rotor rotational speed to create shear forces for canceling rotor induced vibrations. The amplitude of the generated shear force is controlled by indexing the positions of the unbalanced weights relative to each other, while the phase of the shear force is adjusted by equally phasing each weight relative to the rotor.

Abstract translation: 用于转子毂的振动控制系统通过减小转子感应振动的大小来提供飞行器中的振动衰减。 该系统可以包括附接到转子毂的力产生装置，该转子毂在转子的旋转速度下与转子一起旋转。 振动剪切力通过围绕与转子轮毂轴线不同轴的轴线以高速度旋转不平衡的重量而产生，以产生大的离心力。 重量的转速可以是转子转速的倍数，以产生用于抵消转子诱发的振动的剪切力。 所产生的剪切力的振幅通过使不平衡重量相对于彼此的位置分度来控制，而剪切力的相位通过相对于转子的每个重量相等地相位调整。

公开(公告)号：US10814963B2

公开(公告)日：2020-10-27

申请号：US16054606

申请日：2018-08-03

Applicant: Bell Helicopter Textron Inc.

Inventor： David E. Heverly, II ,  Jeremy DeWaters ,  Frank B. Stamps

IPC: B64C27/00 ,  B64C29/00

Abstract: A vibration control system for a rotor hub provides vibration attenuation in an aircraft by reducing the magnitude of rotor induced vibratory. The system can include a force generating device attached to a rotor hub which rotates along with the rotor at the rotational speed of the rotor. Vibratory shear force is generated by rotating unbalanced weights each about an axis non-concentric with the rotor hub axis at high speed to create large centrifugal forces. The rotational speed of the weights can be a multiple of the rotor rotational speed to create shear forces for canceling rotor induced vibrations. The amplitude of the generated shear force is controlled by indexing the positions of the unbalanced weights relative to each other, while the phase of the shear force is adjusted by equally phasing each weight relative to the rotor.

公开(公告)号：US10065730B2

公开(公告)日：2018-09-04

申请号：US14600180

申请日：2015-01-20

Applicant: Bell Helicopter Textron Inc.

Inventor： David E. Heverly, II ,  Jeremy DeWaters ,  Frank B. Stamps

IPC: B64C27/00 ,  B64C29/00

Abstract: A vibration control system for a rotor hub provides vibration attenuation in an aircraft by reducing the magnitude of rotor induced vibratory. The system can include a force generating device attached to a rotor hub which rotates along with the rotor at the rotational speed of the rotor. Vibratory shear force is generated by rotating unbalanced weights each about an axis non-concentric with the rotor hub axis at high speed to create large centrifugal forces. The rotational speed of the weights can be a multiple of the rotor rotational speed to create shear forces for canceling rotor induced vibrations. The amplitude of the generated shear force is controlled by indexing the positions of the unbalanced weights relative to each other, while the phase of the shear force is adjusted by equally phasing each weight relative to the rotor.