Author/Authors :
H. Fuke، نويسنده , , N. Izutsu، نويسنده , , D. Akita، نويسنده , , I. Iijima، نويسنده , , Y. Kato، نويسنده , , J. Kawada، نويسنده , , K. Matsushima، نويسنده , , Y. Matsuzaka، نويسنده , , E. Mizuta، نويسنده , , M. Namiki، نويسنده , , N. Nonaka، نويسنده , , S. Ohta، نويسنده , , Y. Saito، نويسنده , , T. Sato، نويسنده , , M. Seo، نويسنده , , Y. Shoji، نويسنده , , A. Takada، نويسنده , , K. Tamura، نويسنده , , M. Toriumi، نويسنده , , K. Yamada، نويسنده , , et al.، نويسنده ,
Abstract :
The super-pressure balloon (SPB) has been expected to be a flight vehicle that can provide a long flight duration to science. Since 1997, we have developed the SPB. Now we are at the phase of developing an SPB of a practical size. In 2009, we carried out a test flight of a pumpkin-shaped SPB with a 60,000 m3 volume. The undesirable result of this flight aroused us to resolve the deployment instability of the pumpkin-shaped SPB, which has been known as one of the most challenging issues confronting SPB development. To explore this deployment issue, in 2010, we carried out a series of ground tests. From results of these tests, we found that an SPB design modified from pumpkin, named “tawara”, can be a good candidate to greatly improve the deployment stability of the lobed SPB.
Keywords :
Stratosphere , Scientific balloon , Super-pressure , Tawara , Deployment stability , Membrane structure
