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Shaping of parabolic cylindrical membrane reflectors for the Dart Precision Test BedThe DART is a new telescope architecture consisting of a single aperture formed from two cylindrical parabolic reflectors. The system is ideally suited to using tensioned membranes for the reflective surfaces, owing to the zero Gaussian curvature of a cylindrical parabola. In this paper, we present experimental measurements for shaping the membranes by using curved boundary elements to achieve coarse shaping, and a pair of precision rails shaped by moments and forces at the ends, and lightly pushed into the surface, to provide fine shape control.
Document ID
20060046268
Document Type
Conference Paper
External Source(s)
Authors
Morgan, R.
Agnes, Gregory S.
Dragovan, M.
Barber, D.
Marcin, M.
White, C.
Dooley, J.
Hatheway, A.
Date Acquired
August 23, 2013
Publication Date
April 1, 2004
Subject Category
Structural Mechanics
Meeting Information
AIAA Structures, Structural Dynamics, and Materials Conference(Palm Springs, CA)
Distribution Limits
Public
Copyright
Other
Keywords
telescope
large aperture
membrane