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Extendable Frame
Half-scissor joints are arranged in a circle and supplemented with further hinged bars. When extended, the structure provides a cylindrical frame. Northrop-Grumman deploys similar geometry in its AstroMesh Reflector, which is used in various space projects.




"Extendable Frame" from The Wolfram Demonstrations Project
 http://demonstrations.wolfram.com/ExtendableFrame/
Contributed by: Sándor Kabai
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