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Service Balloon |
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Service Balloon
a free balloon that, with a volume of up to 150 cu m, is designed to lift a person to an altitude of 100–150 m. The lifting force of the service balloon at the earth’s surface is equal to the weight of a person or, sometimes, slightly less. During the 1930’s service balloons were used to examine the envelopes of stratosphere balloons at their launch sites. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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