The small sattelites become popular due to the development of electrical parts and frequent launch opportunities. In this sudy, we will introduce one of our missions on orbit by 1U size small satellite Waseda-SAT3. This satellite have two main missions. One is thermal active control by soft matter and the other is measurement of shpe of membrane expanded from spiral folded shape supported by hinge-less mast. The membrane installed in this satellite has parabolic surface and painted innerside to measure shape by lattice projection method and equips solor cell outside to show effectiveness of spiral folding theory considering thickness effect of the membrane.