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

Ok, I'll throw my hat into the custard filled ring.
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Many things are flammable when put into powder form and custard is more flammable than most. So let's say one were to blow custard powder across a flame and mix in a bit more pure oxygen. You'd have a rocket with efficient kick to break out of the atmosphere. Custard powder is also lighter than many fuels out there.
sartep, May 17 2003

Flour Powder http://www.halfbake.../idea/Flour_20Power
Kinda like this? [Cedar Park, Oct 05 2004]

[link]






       (watches as [sartep]'s hat slowly sinks into the custard)
Cedar Park, May 17 2003
  

       Why not a custard supersoaker?
Gamma48, Jun 09 2009
  

       Custard / ammonium nitrate? Where's [8th], there's some munitions here that need handling!
lurch, Jun 09 2009
  

       Well, yes and also no. But at least the exhaust would smell nice.
MaxwellBuchanan, Jun 09 2009
  

       I'm not sure this idea got it's just desserts...ahem   

       // Where's [8th], //   

       Crouching down behind the sandbags. Believe it or not, custard powder, cornflour, starch, and the like are viciously explosive in confined spaces. Grain elevator explosions are tragically all too common - that's cereal dust.   

       You might just be able to get a solid fuel propellant out of the mix but if you ended up with a stoic mixture it could all get rather loud and expensive.....
8th of 7, Nov 20 2009
  

       This is an example of the kind of idea i wasn't talking about, as it doesn't depend on viscosity.
nineteenthly, Nov 20 2009
  

       //a stoic mixture// What, does it say to itself "well, I'm about the blow up, but I'll just put up with it"?
MaxwellBuchanan, Mar 21 2018
  

       "Whatever... am I bovvered ... ?"
8th of 7, Mar 21 2018
  
      
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