大型実験体による無重力実験

概要

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A system for microgravity experiments by using a stratospheric balloons has been developed since 1980. In the experiment performed in 1983,a microgravity chamber was released at a balloon altitude of 32km. A scientific instrument for the microgravity experiment was equipped inside the chamber together with accelerometers, attitude sensors, two telemetry transmitters, a sequence timer and parachutes. The experiment was to observe the behavior of fishes under microgravity environment by taking movies using two 8mm cameras. Also, a brain wave of a fish was sent to the ground by a telemetry. The observations were successful. The observed gravity inside the body was less than 3×10^<-3>G approximately for 10sec. The body was decelerated by a reefed parachute system after the microgravity experiment of 20 seconds. The observed opening shocks of reefed and disreefed parachute were both about 3.5G. This parachute system will be applied to the recovery of a rocket.
宇宙航空研究開発機構の論文