DEPLOYABLE REFLECTOR

摘要

An expansion-type reflection mirror has connecting members that are installe d between extendable members constructing an expansion truss. Each connection member connects a portion corresponding to an antinode of and a portion corresponding to a node of a bucking mode occurring in extendable members wh en tensile force is applied to surface cable. Further, the surface cable is composed of inner surface cable and outer periphery surface cable that is joined to the outer periphery of the inner surface cable. Cable having high rigidity and whose length varies a little when tensile force varies is used as the inner surface cable. As the outer periphery surface cable, cable having lower rigidity than the inner surface cable and whose tensile force varies less than the inner surface cable when the length varies is used. Tensile force is applied from the expansion truss to the inner surface cable through the outer periphery surface cable to form a predetermined mirror surface sha pe.