This study develops a methodology of direct measurement of attitude motions of parts of a stratospheric balloon flight system and of estimation of deformations of the parts, in order to reveal characteristics of the motion of the balloon flight system and disturbance forces. For some balloon missions, design and development of attitude or pointing control system of a gondola or a mission devices on the gondola requires basic knowledge how the attitude of the gondola and the balloon envelope will move. However, such the knowledge has not been gathered enough: vibration modes of balloon flight systems were studied, but the transient of the motion have not been fully understood yet. This study developed a special attitude logger to gather attitude motions of some parts of balloon flight systems for understandings of transient of the motions. This attitude logger can be mounted on six points on a balloon flight system including the top of the balloon and a gondola, the bottom of the flight system. Each logger measures three dimensional vectors of the acceleration, the angular velocity and the geo-magnetic field at 10 Hz. Also, it records time and location by receiving the GPS signal at the same frequency. The demonstrations were conducted three times in the JAXA's balloon flight campaigns in 2017 and 2018. All the loggers were successfully recovered, and the attitude motions were revealed. The motions were synchronized with GPS time, which enabled to estimate the deformation of the parts of the flight system with the relative motions of the loggers.
内容記述
形態: カラー図版あり
内容記述（英）
Physical characteristics: Original contains color illustrations
成層圏気球フライトシステム各部の姿勢運動計測手法の開発とフライト実証実験結果
AA1830023001.pdf
(12.59MB)
