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Improvements for rotary viscous dampers used in spacecraft deployment mechanismsDuring component level thermal-vacuum deployment testing of eight rotary viscous dampers for the Tropical Rainfall Measuring Mission (TRMM) satellite, all the dampers failed to provide damping during a region of the deployment. Radiographic examination showed that air in the damping fluid caused the undamped motion when the dampers were operated in a vacuum environment. Improvements in the procedure used to fill the dampers with damping fluid, the installation of a Viton vacuum seal in the damper cover, and improved screening techniques eliminated the problem.
Document ID
Document Type
Conference Paper
Stewart, Alphonso
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Powers, Charles
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Lyons, Ron
(DEB Mfg., Inc. LakeWood, NJ United States)
Date Acquired
August 18, 2013
Publication Date
May 1, 1998
Publication Information
Publication: 32nd Aerospace Mechanisms Symposium
Subject Category
Spacecraft Design, Testing And Performance
Distribution Limits
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19980193156Analytic Primary32nd Aerospace Mechanisms Symposium
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