SUPERPRESSURE BALLOON TEST

Balloon launched on: 5/15/1999 at 7:14 jst
Launch site: Sanriku Balloon Center, Iwate, Japan  
Balloon launched by: Institute of Space and Astronautical Science (ISAS)
Balloon manufacturer/size/composition: Super Pressure Balloon 3.000 m3
Flight identification number: B3-1
End of flight (L for landing time, W for last contact, otherwise termination time): 5/15/1999 at ~ 12:00 jst
Balloon flight duration (F: time at float only, otherwise total flight time in d:days / h:hours or m:minutes - ): 4 h 58 m

After nominal launch using the elevated plataform estatic method, the balloon reached the ceiling at 19Km.

After that the balloon burst due to the broke of a load tape in a gore.

Altought the burst of the balloon, the flight was considered succesful

• Scientific ballooning in Japan Advances in Space Research, Volume 30, Issue 5, 2002, Pag.1095
• Scientific observations with balloons Institute of Space and Astronautical Science Annual Handbook 1999 (In Japanese)