Enter the parameters of your homemade water rocket, and launch it! A detailed description of the equations are described at length at the "water rocket equations" page.

Note that if the initial thrust is not large enough to overcome the pull of gravity, the rocket will simply not launch. This could happen if the pressure is not large enough, the water mass too large or the nozzle too small.

Enter the water rocket parameters, and press "OK, launch!" to simulate it.

Empty
rocket weight (i.e., without water)

M_{0}

Kg

Initial
amout of water

M_{w}

Kg

Bottle Volume

V_{b}

liter

Initial
pressure

P_{0}

atm

Gravitational
Constant

g

m/s^{2}

Drag
Coefficient (~0.5 for smooth cylinder)

C_{d}

Simulation
time step

Δt_{}

s

Bottle radius

R_{z}

cm

Nozzle radius

R_{n}

cm

If you are interested in the actual equations solved, visit the water rocket equations page.

View the discussion thread.