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Deployable structure
A deployable structure is a structure that can change shape so as to significantly change its size.〔( S. Pellegrino (Ed.), ''Deployable Structures,'' CISM International Center for Mechanical Sciences, Springer, 2002 )〕〔http://www-civ.eng.cam.ac.uk/dsl/〕
Examples of deployable structures are umbrellas, some tensegrity structures, bistable structures, some Origami shapes and scissor-like structures. Deployable structures are also used on spacecraft for deploying solar panels and solar sails.
Space-based deployable structures can be categorized into three primary classes: the first is the articulated structure class wherein rigid members contain sliding contact joints or are folded at hinge points and pivot to deploy, often locking into place. The second class consists of on-orbit assembly where a device is fabricated and/or mechanically joined in space to form the structure. The final class is high strain structures (often composed of High strain composites) wherein the device is dramatically flexed from one configuration to another during deployment.
==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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