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hydrogen launcher
Posted: Tue Feb 26, 2008 11:09 pm
by Brian
this is where i found the hydrogen launcher. you fill the bottle with the hydrogen and oxigen that you can make from electrifying the water and collecting the bubbles. keep a little water in it. and ignite the gas.
http://www.et.byu.edu/~wheeler/benchtop/hydropyro.php
the idea is to quickly compress the bottle without a bike pump.
Posted: Thu Feb 28, 2008 2:26 pm
by Tim Chen
I don't think using an explosion to provide the pressure to launch a water rocket is any different than any other pyro rocket. It would be fun to experiment with but it's not the same thing as a water rocket.
Posted: Fri Feb 29, 2008 10:54 am
by october sky
so you do know that it takes hours to get about 5psi of hydrogen. so this mite take even longer
Posted: Fri Feb 29, 2008 1:40 pm
by Tim Chen
october sky wrote:so you do know that it takes hours to get about 5psi of hydrogen. so this mite take even longer
I knew it takes a long time but there was a device on mythbusters that could turn water into hydrogen at a fast rate and even the presenters were surprised it was so fast.
I think if you had a small volume to fill it would be faster than an hour to get 5psi too. Still not very useful if the volume is too small.
Posted: Fri Feb 29, 2008 10:20 pm
by Brian
Tim Chen wrote:I don't think using an explosion to provide the pressure to launch a water rocket is any different than any other pyro rocket. It would be fun to experiment with but it's not the same thing as a water rocket.
the rocket is still filled with a bit of water, the hydrogen isn't the fuel it's the compressor, the water in the rocket is still the main fuel.
Posted: Sun Mar 02, 2008 4:02 pm
by Tim Chen
Brian wrote:Tim Chen wrote:I don't think using an explosion to provide the pressure to launch a water rocket is any different than any other pyro rocket. It would be fun to experiment with but it's not the same thing as a water rocket.
the rocket is still filled with a bit of water, the hydrogen isn't the fuel it's the compressor, the water in the rocket is still the main fuel.
I think it's a cool idea and would be a lot of fun to play around with but I don't know of any competitions that allow this. Every contest I have seen frowns on chemical reactions powering the rocket and phase changes powering the rocket too. I don't think they even allow melting carbon dioxide ice for compression either. If anything it would be in a different class, like steam rockets or something.