Water rocket capacity

[Sticky_Tape]

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.

[psycix]

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.

[Sticky_Tape]

Yeah I think that is a good idea. I could also add dish soap.

[Lentamentalisk]

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.