Invention Grant
- Patent Title: Magnetic squeeze film damper system for a gas turbine engine
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Application No.: US14841754Application Date: 2015-09-01
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Publication No.: US10465557B2Publication Date: 2019-11-05
- Inventor: Andrew D. Copeland , Donald W. Burns , Stanford O. Clemens , Alan B. Cookerly
- Applicant: Rolls-Royce North American Technologies, Inc.
- Applicant Address: US IN Indianapolis
- Assignee: Rolls-Royce North American Technologies, Inc.
- Current Assignee: Rolls-Royce North American Technologies, Inc.
- Current Assignee Address: US IN Indianapolis
- Agency: Maginot, Moore & Beck, LLP
- Main IPC: F01D25/16
- IPC: F01D25/16 ; F02C7/06 ; F04D29/32

Abstract:
A magnetic squeeze film damper system comprises a bearing assembly having an outer race with a first outer surface and a first inner surface and a bearing located along the first inner surface. The system further comprises a squeeze film damper housing having a second outer surface and a second inner surface that is contiguous with the first outer surface. A channel having a forward end and an aft end is defined within the housing along the second inner surface, the channel bordered by the first outer surface. The system further includes a first seal gland located along the forward end of the channel and a second seal gland located along the aft end of the channel. Both seal glands comprise a reservoir for holding a magneto-rheological fluid, the reservoir encased in an elastomer. At least one electromagnet is arranged in close proximity to each of the seal glands.
Public/Granted literature
- US20170058697A1 MAGNETIC SQUEEZE FILM DAMPER SYSTEM FOR A GAS TURBINE ENGINE Public/Granted day:2017-03-02
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