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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
19980193165
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Alphonso Stewart (Goddard Space Flight Center Greenbelt, United States)
Charles Powers (Goddard Space Flight Center Greenbelt, United States)
Ron Lyons (DEB Manufacturing LakeWood, NJ United States)
Date Acquired
August 18, 2013
Publication Date
May 1, 1998
Publication Information
Publication: 32nd Aerospace Mechanisms Symposium
Publisher: National Aeronautics and Space Administration
Volume: NASA/CP-1998-207191
Issue Publication Date: May 1, 1998
Subject Category
Spacecraft Design, Testing And Performance
Meeting Information
Meeting: 40th Anniversary Pioneering the Future 32nd Aerospace Mechanisms Symposium
Location: Cocoa Beach, FL
Country: US
Start Date: May 13, 1998
End Date: May 15, 1998
Sponsors: Lockheed Martin (United States)
Distribution Limits
Public
Copyright
Public Use Permitted.
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