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HacDC Spaceblimp

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Revision as of 16:45, 29 September 2016 by 76.21.250.108 (talk) (add photo)
Why use helium instead of hydrogen?
Wouldn't you get more lift? Leakage maybe?
Are there flight requirements other than avoiding restricted airspace?
Do you have to notify anyone or announce the release on the radio?

Photograph=

I uploaded the group photograph at https://commons.wikimedia.org/wiki/File:2016_SpaceBlimp_VI_on_27_September_2016.jpg#.7B.7Bint:license-header.7D.7D on Wikimedia Commons. Geraldshields11