Whirl plus tilt

Technical Report · Wed Oct 12 00:00:00 EDT 1994

DOI:https://doi.org/10.2172/10121834· OSTI ID:10121834

Fowler, T K

It is shown that, for an idealized rotor with identical magnetic bearings of negligible mass, precession and rotation are decoupled from the center-of-mass motion so that stabilization of whirl instabilities can be designed independent of tilt. The bearing torques that cause whirl also apply torques on the free-body- rotational motion in a tilted state. The rotational equations of motion including these torques are given in the paper. An approximate solution for a special case suggests the possibility of tilt instability above a critical frequency.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 10121834
• Report Number(s): UCRL-ID-118981; ON: DE95007948; TRN: 95:002373
• Resource Relation: Other Information: PBD: 12 Oct 1994
• Country of Publication: United States
• Language: English

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