宮﨑 康行

The Spinning solar sail is expected to be a future space exploration system. Considering the dynamic deformation ofthe sail membrane is an indispensable factor in designing the spacecraft. But the mathematical model of the sail membrane is complex. Computational analysis is difficult and time consuming. Therefore this has a negative impact on simulation, design and control problems. The model reduction technique is required to shorten the design period. It is a necessary step in order to put the gossamer structure to practical use. In this presentation, the dynamic property of the square type spinning solar sail is revealed, and the requirements for constructing a reduction model are revealed. Then, empirical model reduction techniques are applied to gossamer structures, and the issue of constructing a low-order model is summarized.

Space Inflatable Membrane structures Pioneering Long-term Experiments (SIMPLE) unit is one of ISS Japanese Experimental Module (JEM) Kibo's exposed facility payloads scheduled to be launched in 2012. Manufacturing and function testing phase of the engineering model (EM) has been completed and the proto-flight model (PFM) is now underway. The SIMPLE mission consists of three experimental verifications using Inflatable Extension Mast (IEM), Inflatable Space Terrarium (IST) and Inflatable Material Experimental Panel (IMP). The combination of the experiments is aimed to demonstrate the usefulness and viability of the inflatable structures and to acquire the basic operational data of the systems. The brief descriptions of each component of the SIMPLE experiments are presented and the idea of the verification project is summarized.

This paper gives an overview of the currently planned on-orbit space verification experimental device complex composed of multiple inflatable demonstration units, proposed by the authors' group. The compact device named SIMPLE is designed to be suitable for one of the shared experimental installations that constitute a single experimental block attached to the Exposed Facility of Kibo Japanese Experimental Module (JEM) of ISS. The SIMPLE mission was accepted by JAXA as the candidate of the secondary application of the Exposed Facility of JEM at the end of last year.