A chronology of the on-orbit pointing control system changes on the Hubble Space Telescope and associated pointing improvements

Details A chronology of the on-orbit pointing control system changes on the Hubble Space Telescope and associated pointing improvements A chronology of the on-orbit pointing control system changes on the Hubble Space Telescope and associated pointing improvements

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992gnc..conf.1418s&link_type=abstract

IN: AIAA Guidance, Navigation and Control Conference, Hilton Head Island, SC, Aug. 10-12, 1992, Technical Papers. Pt. 3 (A92-551

Physics

Optics

Cassegrain Optics, Control Systems Design, Hubble Space Telescope, Pointing Control Systems, Solar Arrays, Controllers, Dynamic Structural Analysis, Software Tools, Transfer Functions

Scientific paper

The pointing control system on the Hubble Space Telescope was designed to keep an image stable in the focal plane to 0.007 arc seconds (rms) for observations lasting from seconds to hours. Following the on-orbit deployment, this level of pointing performance was achieved only for short intervals during each orbit because of unexpected disturbances originating in the Solar Arrays. Since this problem was first recognized, several control system redesigns have been carried out and uplinked to the spacecraft with increasing degrees of success. This paper presents a chronology of those activities. In addition, sufficient background material is included regarding the pointing control system and the Solar Array disturbance so that the contents can be understood without reverting to the details in the reference material.

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