Water Rockets, Research

Here is some research that me and my friends done together in categories.

1. Research shape, fuel and important features
2. Write out method of how you are going to make it, using bottle, scissors, paper, sellotape, glue etc)
3. Research how water rockets work. Name 4 important points.

1. Research.

      The shape would be a basic soda or water bottle with added fins, tail etc. Fuel would likely be pressurised water, connected to a sprinkler(?) and/or a hose. The hose would be connected to the bottom of the bottle and hurl upwards as the water would feel too pressured inside of the bottle.

           2. Method -

1. Roll a piece of paper into a cone this will be the nose of the rocket if you want you could colour it.
2. Wrap the nose with some duct tape this will make it stronger and more water resistance.
3. Attach the nose to the bottom bottle and use duct tape or glue to stick it together.
4. Cut 3 or 4 pieces of thin cardboard triangles. Try to make them all right angle so the rocket will stay more straight Place the fins on the lower part of the rocket.Bend “tabs” into the sides of the fins so that they can attach to the rocket body more easily. Then, tape or glue them on.If you line up the bottoms of the fins with the bottom of the rocket, it should be able to stand on its own.
5. Add ballast to give the rocket weight you could also use playdough or clay then cover it with duct tape
6. Fill the bottle with water fill 1 litre into the bottle
7. Stuff a cork in the of the bottle opening and make sure the cork is the same size
8. Place a needle like value from bicycle pump into the opening of the cork.(connect the bicycle pump)
9. Place the rocket right side up and hold it by the neck of the bottle onto the bicycle pump valve and aim it away from your face.
10. Launch the rocket
11. For more information click this link

4. More research.

Usually 2 litre  bottles are used as water rockets. The rocket sits on a base which is part of a connected launcher.
A tube leads from the launcher's air pump to the rocket base and pushes air up into the water rocket.
Supporters must be sure to place the open end of the water bottle they are using over the tubular rocket base.
The line from the pump pushes air into the tube to launch the rocket. The soda bottle is filled with some water, which works as the propellant.
The amount used depends on how much thrust the rocket enthusiast wants his rocket to achieve.
Water is much heavier than air, so the water that is expelled creates a much greater thrust during launch than just using compressed air.
The base of the bottle is always larger than the tube used to launch it. When it is put on its launching tube, the tube becomes a vessel for closed pressure.
Whatever amount of air the pump creates is the amount of compressed air traveling through the tube.
The air pushes and launches the rocket, which, depending on the amount of water used, flies to variant heights.
Water bottle rockets have broken some records: 200 kilometers per hour is the fastest recorded speed of a water rocket, a velocity that has not been surpassed.
For highest altitude, a water rocket launched in 2004 achieved a height of more than 300 feet.