29 July 2016 APERTURE: a precise extremely large reflective telescope using re-configurable elements
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Abstract
One of the pressing needs for the UV-Vis is a design to allow even larger mirrors than the JWST primary at an affordable cost. We report here the results of a NASA Innovative Advanced Concepts phase 1 study. Our project is called A Precise Extremely large Reflective Telescope Using Reconfigurable Elements (APERTURE). The idea is to deploy a continuous membrane-like mirror. The mirror figure will be corrected after deployment to bring it into better or equal lambda/20 deviations from the prescribed mirror shape. The basic concept is not new. What is new is to use a different approach from the classical piezoelectric-patch technology. Instead, our concept is based on a contiguous coating of a so called magnetic smart material (MSM). After deployment a magnetic write head will move on the non-reflecting side of the mirror and will generate a magnetic field that will produce a stress in the MSM that will correct the mirror deviations from the prescribed shape.
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M. P. Ulmer, M. P. Ulmer, V. L. Coverstone, V. L. Coverstone, J. Cao, J. Cao, Y.-W. Chung, Y.-W. Chung, M.-C. Corbineau, M.-C. Corbineau, A. Case, A. Case, B. Murchison, B. Murchison, C. Lorenz, C. Lorenz, G. Luo, G. Luo, J. Pekosh, J. Pekosh, J. Sepulveda, J. Sepulveda, A. Schneider, A. Schneider, X. Yan, X. Yan, S. Ye, S. Ye, } "APERTURE: a precise extremely large reflective telescope using re-configurable elements", Proc. SPIE 9904, Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave, 99041I (29 July 2016); doi: 10.1117/12.2231679; https://doi.org/10.1117/12.2231679
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