Papers Published

1. Davis, L. P. and Wilson, J. F. and Jewell, R. E., WORKSHOP ON STRUCTURAL DYNAMICS AND CONTROL INTERACTION OF FLEXIBLE STRUCTURES., NASA Conference Publication no. pt 1 (1987), pp. 669 - 690 .
   (last updated on 2007/04/09)

   Abstract:
   The Hubble Space Telescope features the most exacting line of sight jitter requirement thus far imposed on a spacecraft pointing system. Consideration of the fine pointing requirements prompted an attempt to isolate the telescope from the low level vibration disturbances generated by the attitude control system reaction wheels. The primary goal was to provide isolation from axial component of wheel disturbance without compromising the control system bandwidth. At Sperry Corporation, a passive isolation system employing metal springs in parallel with viscous fluid dampers was designed, fabricated, and space qualified. Vibration attenuation goals were obtained and ground test of the vehicle has demonstrated the isolators are transparent to the attitude control system.

   Keywords:
   SPACE RESEARCH - Surveillance;VIBRATIONS - Absorption;SPRINGS - Vibrations;