Ben88012 Posted May 20, 2017 Share Posted May 20, 2017 can wood or coal be used as the solid in a Hybrid rocket if it cant does anyone have any uncommon ideas Link to comment Share on other sites More sharing options...
KipIngram Posted May 20, 2017 Share Posted May 20, 2017 If you look here: https://en.wikipedia.org/wiki/Solid-propellant_rocket#Propellant_families you'll see that the first entry (black powder propellants) has charcoal as a component. What you're looking for is a material blend that has a high "specific impulse." Not just the material itself but also the grain geometry is important. Link to comment Share on other sites More sharing options...
John Cuthber Posted May 20, 2017 Share Posted May 20, 2017 What you're looking for is a material blend that has a high "specific impulse." Not just the material itself but also the grain geometry is important. What he's looking for is probably a hybrid rocket system - because that's what he asks about. https://en.wikipedia.org/wiki/Hybrid-propellant_rocket That rules out black powder (and I think it rules out all the other systems you linked to). I can't think of a good reason why timber of coal wouldn't work. I'd be a bit worried about the solid cracking under the pressure and breaking up. Link to comment Share on other sites More sharing options...
KipIngram Posted May 20, 2017 Share Posted May 20, 2017 Oh, you're right - I misread. I took it as a query about solid rocket fuels. Sorry about that. Link to comment Share on other sites More sharing options...
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