The water rushes out of the bottle in one direction whilst the bottle pushes back in the other. For a while now, we have been experimenting with ways to make water rocket construction easier, faster, and more profesional looking. Construct and launch a simple bottle rocket made from a two-liter soda bottle. How to Keep Water Bottle Rockets in the Air.

The tips are roughly organized from most effective to least effective ways of flying higher. For stability, you need fins and as a rule of thumb, you need them as far back as you can easily and practically get them.

SEE VIDEOS OF ROKIT IN ACTION. Rokit is a precision water bottle rocket used by schools, colleges, and individuals throughout the world.

The purpose of rocket fins are to stabilize a rocket and help it continue in a certain direction without wobbling, falling, flipping over or suddenly changing direction. Tape the fin ring to the tail of your rocket. Rokit is safe to use, easy to assemble and flies to over 30 metres. S tratoFins®, screw-on water rocket fins, are compatible with 95% of all available launchers either homemade or commercially available in the marketplace including those employing a rubber stopper, an expanding tube, nozzle, O-ring, or cable ties because it replicates the threaded portion of the bottle beyond the fins. The tips are roughly organized from most effective to least effective ways of flying higher. Use a fin ring to mount your fins around the nozzle. Launch To launch the water rocket, we need to pump air into the rocket: this provides the energy for the launch. Both must be chosen carefully to assure stability. The size and the shape of the fin on the rocket affects the overall performance, speed and height that the rocket obtains.

Slide your box fin assembly over the rocket in the area where you want to locate the fin section and mark the bottle with a pen at the location of each fin where it touches the rocket bottle. Typically the bottle will be between about one quarter and one third filled with water. For 2-liter plastic bottle rockets use a fin similar in size to this template. successfully launch them. Rocket aerodynamics is the study of how air flows over a rocket and how this affects drag and stability. The following tips should help you achieve a greater altitude with your water rocket. This means swept back fins that extend beyond the neck of the bottle where the bottle lid was. Adding a nose cone can greatly reduce resistance and provide an area to add a little weight to help stabilize the rocket in flight. Without fins, a rocket would be much less aerodynamic, which would interfere with the rocket’s ability to shoot high and straight into the air. Rocket Activity. One area of the rocket which many people find particularly time consuming and challenging is the fin section. Student teams will construct water rockets and .