NASA tests super-high altitude balloon
DOI: 10.1063/PT.5.022974
CNET News : NASA said Thursday it has performed a test of a prototype super pressure balloon that could carry as much as a ton of research equipment to heights of 110,000 feet or more for up to 100 days.
The balloon, which was launched on December 28, 2008, from McMurdo Station in Antarctica, is 7 million cubic feet and is said to be the largest single-cell, super-pressure, fully sealed balloon ever flown. When the project--which NASA is conducting in coordination with the National Science Foundation--is completed, the space agency should have a 22 million cubic foot balloon to work with.
NASA said that long-duration high-altitude balloon missions are far more cost-effective than satellites and that a chief benefit is that the instruments used can be easily retrieved and re-used.
