There are three simulation programs available at this site:

BottleRocketSim is intended for younger students. It is a highly graphical, 1 dimensional, Flash simulation with very few input parameters.

RocketModeler II is intended for middle and high school students. It is a 2 dimensional, Java applet with a large number of inputs. It can also simulate stomp rockets and model rockets.

The 3D WaterRocketSim is under development. Shown below is a link to the prototype test release.

NOTE: Remember, if you have not gone to the Install the Simulator link yet, you must do so or the simulator WILL NOT WORK.

Go to the prototype Simulator.