A System For Load Isolation And Precision Pointing

Claude R. Keckler; Brian J. Hamilton

doi:10.1117/12.937969

3 November 1983 A System For Load Isolation And Precision Pointing

Claude R. Keckler, Brian J. Hamilton

Proceedings Volume 0444, Advanced Technology Optical Telescopes II; (1983) https://doi.org/10.1117/12.937969
Event: 1983 Astronomy Conferences, 1983, London, United Kingdom

Abstract

A system capable of satisfying the accuracy and stability requirements dictated by Shuttle-borne payloads utilizing large optics has been under joint NASA/Sperry development. This device, denoted the Annular Suspension and Pointing System, employs a unique combination of conventional gimbals and magnetic bearing actuators, thereby providing for the "complete" isolation of the payload from its external environment, as well as for extremely accurate and stable pointing (≈0.01 arcseconds). This effort has been pursued through the fabrication and laboratory evaluation of engineering model hardware. Results from these tests have been instrumental in generating high fidelity computer simulations of this load isolation and precision pointing system, and in permitting confident predictions of the system's on-orbit performance. Applicability of this system to the Solar Optical Telescope mission has been examined using the computer simulation. The worst case pointing error predicted for this payload while subjected to vernier reaction control system thruster firings and crew motions aboard Shuttle was approximately 0.006 arcseconds.

Citation Download Citation

Claude R. Keckler and Brian J. Hamilton "A System For Load Isolation And Precision Pointing", Proc. SPIE 0444, Advanced Technology Optical Telescopes II, (3 November 1983); https://doi.org/10.1117/12.937969

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