3 July 2000 Semirigid and adjustable CFRP membrane for radio telescope applications
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High accuracy, light-weight carbon fiber reinforced plastic (CFRP), membrane reflectors have been demonstrated by Composite Optics, Inc. (COI) for applications in ground based, millimeter wave radio astronomy. The surface figure of a semi- rigid membrane can be significantly improved by adjustment with an array of passive adjusters the support the membrane. A factor of ten contour improvement is possible. First, the surface is measured and analyzed for distortion from the desired shape. Then adjustment instructions are calculated by a customized software program and applied to the adjusters. This process is repeated to produce dimensionally stable reflectors, several meters in diameter at or below 25 micrometers RMS.
© (2000) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Daron C. Giles, Daron C. Giles, J. Kibler, J. Kibler, } "Semirigid and adjustable CFRP membrane for radio telescope applications", Proc. SPIE 4015, Radio Telescopes, (3 July 2000); doi: 10.1117/12.390445; https://doi.org/10.1117/12.390445

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