Accession Number : ADP004730

Title :   Sizing of Discrete Viscous Dampers on a Flexible Body in the Presence of a Fixed Controller,

Corporate Author : MARTIN MARIETTA AEROSPACE DENVER CO

Personal Author(s) : Rapacki,G. R. ; Rice,R. B.

Report Date : NOV 1984

Pagination or Media Count : 28

Abstract : The authors investigated the effects of discrete viscous dampers on a spacecraft's rigid body control loop. The damper's affect on the open loop gain and phase margins, the shape of the open loop gain-phase plot and the flexible body dynamics were determined as a function of the viscous damper's strength and the mass connected to the damper. The damper was sized for those configurations where the added damper improved the system robustness. (Author)

Descriptors :   *DAMPING, *OPEN LOOP SYSTEMS, *SPACECRAFT, *STABILIZATION SYSTEMS, VISCOSITY, FLEXIBLE STRUCTURES, RIGIDITY

Distribution Statement : APPROVED FOR PUBLIC RELEASE