Half a croissant, on a plate, with a sign in front of it saying '50c'
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H2O2 Airship

Use H2O2 for buoyancy and propulsion
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Use the steam from Hydrogen Peroxide mono-propellant, for buoyancy AND have it leave the airship creating a rocket motor.

Idea I had at 17 (1981) for a submarine, but then read about the Kursk. Recently I saw the Seconds from Disaster episode, and realized H2O2 has been sacked for no good reason, just like airships after the Hindenburg explosion.

pashute, Jul 08 2013

Steam balloon
[xaviergisz, Jul 08 2013]

Coal powered water vapor balloon [pashute, Jul 08 2013]

Hot vapor balloon (LTA) [pashute, Jul 09 2013]

[link]






       "Propulsion poofs; [pashute] posterized per physics. Pictures presently."
lurch, Jul 09 2013
  
      
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