Photogrammetric Assessment of the Hubble Space Telescope Solar Arrays During the Second Servicing Mission

This report documents the photogrammetric assessment of the Hubble Space Telescope (HST) solar arrays conducted by the NASA c Center Image Science and Analysis Group during Second Servicing Mission 2 (SM-2) on STS-82 in February 1997. Two type solar array analyses were conducted during the mission using Space Shuttle payload bay video: (1) measurement of solar array motion due to induced loads, and (2) measurement of the solar array static or geometric twist caused by the cumulative array loading. The report describes pre-mission planning and analysis technique development activities conducted to acquire and analyze solar array imagery data during SM-2. This includes analysis of array motion obtained during SM-1 as a proof-of-concept of the SM-2 measurement techniques. The report documents the results of real-time analysis conducted during the mission and subsequent analysis conducted post-flight. This report also provides a summary of lessons learned on solar array imagery analysis from SM-2 and recommendations for future on-orbit measurements applicable to HST SM-3 and to the International Space Station. This work was performed under the direction of the Goddard Space Flight Center HST Flight Systems and Servicing Project. Sapp, C. A. and Dragg, J. L. and Snyder, M. W. and Gaunce, M. T. and Decker, J. E. Goddard Space Flight Center; Johnson Space Center HUBBLE SPACE TELESCOPE; SOLAR ARRAYS; PHOTOGRAMMETRY; SPACE SHUTTLE MISSIONS; ORBITAL SERVICING; PAYLOAD RETRIEVAL (STS); SOLAR DYNAMIC POWER SYSTEMS; PHOTOVOLTAIC CONVERSION; SPACE SHUTTLE PAYLOADS; SPACE TRANSPORTATION SYSTEM; NASA PROGRAMS; SPACE TRANSPORTATION SYSTEM FLIGHTS; SPACE PLATFORMS; MAN TENDED FREE FLYERS; SOLAR COLLECTORS; PHOTOTHERMAL CONVERSION; SOLAR ENERGY CONVERSION...