Parachute inflation aid utilizing liquid vapor pressure has been investigated in order to improve the reliability of the parachute deployment of the S-160 rocket at altitudes of 70～80km. The report describes the results of the laboratory experiments on the inflation characteristics of the model parachutes having torus to be expanded by liquid vapor pressure at the edge of the canopy, the balloon experiments at 29km altitude to test the inflations of the full-scale parachutes with two types of torus configuration, and the final deployment test with the S-160-3 rocket at 68km altitude. The paper includes also the theoretical considerations on the mechanism of the parachute deployment forced by the inflation of the torus and the time for the parachute inflation, and the discussions on the torus configuration and the choice of the liquid to be used in the torus
液体蒸気圧を利用したパラシュート強制開傘方式
SA0125488.pdf
(3.52MB)
