Ne moram priznat da mi je prema slikama za 15 km bilo prenisko ali me i iznenadio i podatak o 150 km. Ako malo dalje čitate članak imate podatak o recordima sa balonima :
"Unmanned gas balloon In 1893 French scientist Jules Richard constructied sounding balloons. These unmanned balloons, carrying light, but very precise instruments, approached an altitude of 50,000 feet (15,240 meters).
[20]The altitude record for unmanned balloons was (1991 edition of Guinness Book) 51.8 km (170,000 ft). The vehicle was a Winzen-Balloon with a volume of 1.35 million cubic metres, which was launched in October 1972 in
Chico, California, USA.[
citation needed]
In 2002 Japan achieved a new record: an ultra-thin-film balloon named BU60-1 made of polyethylene film 3.4 µm thick with a volume of 60,000 m³ was launched from Sanriku Balloon Center at 6:35 on May 23, 2002. The balloon kept ascending slowly at a speed of 260 m per minute and successfully reached the altitude of 53.0 km (173,900 ft), establishing a new world record for the first time in 30 years."Kažem možda su podaci već zastarjeli...
Želim vam puno uspjeha sa novim projektom, tema je jako zanimljiva, volio bi da vodite nekakav build log o vašem napretku u projektu, još jednom želim vam puno uspjeha.
pozz