AAS 97-730
FLIGHT CONTROL, DYNAMICS, AND STRUCTURAL INTERACTION ON THE SECOND HUBBLE SPACE TELESCOPE SERVICING MISSION
L.L. Sackett, C.B. Kirchwey, M.C. Johnson, R.D. Barrington - The Charles Stark Draper Laboratory, Inc.
Abstract
The second Hubble Space Telescope (HST) Servicing Mission (SM) occurred in February 1997 on STS-82. Throughout the servicing, the fragile HST solar arrays were deployed and loads on the solar arrays caused by the Space Shuttle control jet firings were of great concern. Extensive pre-flight analyses of possible solar array loads and deflections were performed and flight control system constraints and operational procedures were recommended to mitigate the effect of jet firings. Because of the concern about using the large primary shuttle jets for a reboost maneuver, a scheme was developed to use the smaller vernier jets to perform orbit raising maneuvers. Flight control system stability with a large flexible payload was also considered.