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Vol. 52 (2011) No. 2 June n. 168

2D-Deployable Flat-Panel Structure

< Table of Contents for Vol. 52 (2011) No. 2 June n. 168
  • Journal Name: Journal of the International Association for Shell and Spatial Structures (J. IASS)
  • ISSN: (Electronic Version) 1996-9015
  • ISSN: (Print Version) 1028-365X
  • Issue: Vol. 52 (2011) No. 2 June n. 168
  • Pages: 109-120
  • Title: 2D-Deployable Flat-Panel Structure
  • Author(s): M. Takatsuka and H. Ohmori
  • Keywords: deployable structures, space structures, solar power satellite, solar cell panels, scissors mechanism, two-dimensional deployment, stabilization, snap-through phenomenon
This paper proposes a new deployable structure for huge flat constructs such as a Solar Power Satellite (SPS). The SPS, which was proposed by Dr. Peter Glaser in 1968, is a working concept to construct huge solar cell panels in space, the scale of which ranges from several hundred meters to kilometers. The present study focuses on some problems related to transportation and construction of such structures and proposes a new method to fold and deploy them two-dimensionally. We assume that the plane is divided into some small square panels, and propose a new method to lay them one on top of one another two-dimensionally, with masts made of a scissors mechanism, tilted rotational axis, and springs. The tilted rotational axis is originally used to rotate a panel two-dimensionally in a local coordinate system, and to stretch a spring for stabilization of an unstable scissors mechanism. The first half of this paper presents a numerical analysis of its stable structure. The second half shows a three-dimensional simulation of its rigid body motion as an unstable structure without springs, where the thickness of panels and size of joints are taken into consideration.

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