@techreport{oai:jaxa.repo.nii.ac.jp:00006210,
 author = {並木, 道義 and Namiki, Michiyoshi},
 month = {Jan},
 note = {Launching a large balloon at a limited launching field is a long standing subject in Japan. The volume of the largest balloon ever launched successfully was 200,000 cubic meters. This type of balloon was firstly launched in 1973. A larger balloon with a volume of 500,000 cubic meters was tried to launch in 1980; however it did not succeed because of burst during the ascending phase. For launching a large balloon with a total lift more than 1 ton, the static launching method, we have used for more than 20 years, has several weak points that may result in failure. We developed a semi-dynamic launching method using a new launcher, which is fixed on the ground and has a freedom of rotation around the vertical axis and an elevation system up to 5 m, as well as a leap-up spooler system for holding a balloon bubble, in 1999. We have launched several balloons using the method. In 2003, a balloon with a volume of 500,000 cubic meters, which was made of polyethylene films of 20 micrometers in thickness, was successfully launched with the semi-dynamic launching method. It is the largest balloon ever launched in Japan., 資料番号: AA0049057001, レポート番号: JAXA-SP-05-011},
 title = {超大型科学観測気球の放球},
 year = {2006}
}