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WikiProject Aviation / Aircraft (Rated Stub-class)
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Stub-Class article Stub  This article has been rated as Stub-Class on the project's quality scale.
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  • Agree w/merger proposal.--Epeefleche (talk) 04:18, 18 November 2011 (UTC)

Inflation gas must be lighter than air[edit]

According to the patent and the laws of physics, in order for the baloon part to have an effect — Preceding unsigned comment added by (talk) 09:55, 9 December 2015 (UTC)