The application of the Pactruss deployable structure to the support of large paraboloidal reflectors of very high precision was studied. The Pactruss concept, originally conceived for the Space Station truss, is shown to be suitable for use in a triangular arrangement to support a reflector surface composed of hexagonal reflector panels. A hybrid of Pactruss structural and deployable single-fold beams is shown to accommodate a center body. A minor alteration in the geometry is in order to avoid lockup during deployment. To assess the capability of the hybrid Pactruss structure, an example truss supporting a full-scale (20 meter diameter) infrared telescope was analyzed for static and dynamic performance. A truss structure weighing 800 kilograms gave adequate support to a reflector surface weighing 3,000 kilograms.
Pactruss Support Structure for Precision Segmented Reflectors
1989
75 pages
Report
No indication
English
Manned Spacecraft , Astrophysics , Large deployable reflector , Parabolic reflectors , Supports , Trusses , Beams (Supports) , Deployment , Hybrid structures , Orbital assembly , Space erectable structures , Space station structures , Applications programs (Computers) , Dynamic stability , Folding structures , Longerons , Performance tests , Static stability , Stowage (Onboard equipment) , Structural vibration
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