The Solar Blade Heliogyro Nanosatellite has the appearance of a Dutch windmill and employs sail control akin to a helicopter. Four solar reflecting blades, each 30 meters long by 1 meter wide and constructed from ultrathin polyimide film, are attached to a central spacecraft bus and are pitched along their radial axis. Embedded Kevlar and battens provide added stiffness and resistance to tears. The satellite uses collective and cyclic pitch of these solar blades relative to the sun's rays to control attitude and thrust. The spacecraft weighs less than 5 kilograms, and, when stowed, is a package approximately the size of a golf bag. Total launch mass, including stowage carriage, is 35 kilograms.