Steam Balloon: Revision history

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11 April 2012

  • curprev 17:5317:53, 11 April 2012‎ Rasmus talk contribs‎ 637 bytes +637‎ Created page with "Steam is an excellent lifting gas that provides about 60% of the lift of helium but is much cheaper. It is also a much better lifting gas than hot air at the same temperature. St..."
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