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Water rocket capacity

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Water rocket capacity

Unread postAuthor: Sticky_Tape » Mon Feb 23, 2009 11:33 am

I had a thought about water rocket capacity. In a regular 2 liter water rocket people say that 1/3 water and 2/3 air is the optimum mix with I think 100psi. But what if you doubled the pressure could you add twice the ammount of water sacrificing lightness for thrust? The bottle would be reinforced don't nag me about burst pressures.
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You can tell how awesome a cannon is by the pressure used.
http://www.spudfiles.com/forums/high-pr ... 12803.html
xnt rnm ne z ahtbg
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Unread postAuthor: psycix » Mon Feb 23, 2009 1:17 pm

In general spudgun terms "2x pressure, 1/2x volume" makes a gun more powerful. This could also go up for the rockets, though I am not sure that you can simply double the water when you double the pressure.
You should try...
At a wild random guess I say 1/2 water and 1/2 air will be better on 200psi.


Even more important is your nozzle, ofcourse.
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Unread postAuthor: Sticky_Tape » Mon Feb 23, 2009 1:22 pm

Yeah I think that is a good idea. I could also add dish soap.
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You can tell how awesome a cannon is by the pressure used.
http://www.spudfiles.com/forums/high-pr ... 12803.html
xnt rnm ne z ahtbg
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Unread postAuthor: Lentamentalisk » Mon Feb 23, 2009 8:40 pm

you must add soap. It will give you incredible increases in altitude. Experiment around with water levels and air pressures. It will also depend on the size of your nozzle.
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