Semirigid and adjustable CFRP membrane for radio telescope applications

Details Semirigid and adjustable CFRP membrane for radio telescope applications Semirigid and adjustable CFRP membrane for radio telescope applications

Jul 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000spie.4015..523g&link_type=abstract

Proc. SPIE Vol. 4015, p. 523-530, Radio Telescopes, Harvey R. Butcher; Ed.

Physics

Optics

Scientific paper

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.

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