Invention Grant
US08764398B2 Concentrated-mass device for reducing vibration generated by a rotorcraft lift rotor, and a rotor hub fitted with such a device
有权
用于减少由旋翼飞船提升转子产生的振动的集中质量装置，以及装配有这种装置的转子毂
- Patent Title: Concentrated-mass device for reducing vibration generated by a rotorcraft lift rotor, and a rotor hub fitted with such a device
- Patent Title (中): 用于减少由旋翼飞船提升转子产生的振动的集中质量装置，以及装配有这种装置的转子毂
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Application No.: US12762579Application Date: 2010-04-19
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Publication No.: US08764398B2Publication Date: 2014-07-01
- Inventor: Vincent Girard , Stéphane Mazet
- Applicant: Vincent Girard , Stéphane Mazet
- Applicant Address: FR Marignane Cedex
- Assignee: Airbus Helicopters
- Current Assignee: Airbus Helicopters
- Current Assignee Address: FR Marignane Cedex
- Agency: Brooks Kushman P.C.
- Priority: FR0902454 20090520
- Main IPC: F01D5/00
- IPC: F01D5/00 ; B63H5/125 ; F03B3/12 ; F04D29/34
Abstract:
A concentrated-mass device including a main oscillating mass held radially in a horizontal plane by main resilient means inside a casing suitable for being secured to the hub is provided. The device includes a secondary main oscillating mass suspended by secondary resilient means inside a recess in said main oscillating mass to oscillate along a vertical axis perpendicular to the horizontal plane, the secondary oscillating mass being constrained to move in translation together with the main oscillating mass in the horizontal plane.
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