Water+Rocket

=**Water Rocket** =

The rocket is launched by the abrupt release of pressurized air. All the parts come together with tight seals to hold in the pressure. The plumbing pipe won’t leak as long as the right pipe cement is used. The trigger is controlled by a string, and it unlocks the pipe from the end of the bottle. This releases the pressure in the bottle and that shoots the rocket.

__**PROCEDURE:**__ 1. Cut the pipe into three lengths: 2 in, 18 in, 78 in 2. Drill a hole for the valve in the top of one of the PVC caps 3. Connect the valve by sliding it through the hole in the PVC cap and screwing the valve cap back on 4. Glue the launcher parts together with pipe cement 5. Make a seal for the bottle by heating the pipe and pushing it in at the mark for 11 inches away from the end 6. Build a clamp for the bottle by duct taping nine zip ties together and wrap it around the pipe so that the head of each tip faces inward and catches the lip of the bottle when its on the end of the pipe 7. Make a launch trigger

Rockets Trigger

Middle Section Zip Ties

Middle Section Clamp



PVC pipes joining together and the bike pump plugged in



Holding the Water Rocket



Bike Pump




 * __SUPPLIES:__**
 * 1.** 10-foot length of ½-inch PVC pipe
 * 2.** ½-inch PVC tee
 * 3.** two ½-inch PVC end caps
 * 4.** 2-inch-long scrap of 1½-inch PVC pipe
 * 5.** PVC pipe cleaner
 * 6.** PVC pipe cement
 * 7.** replacement valve for a tubeless tire
 * 8.** plastic cable ties, aka zip ties
 * 9.** birthday candle
 * 10.** duct tape
 * 11.** clamp for 1½-inch hose
 * 12.** two 2-liter soda bottles
 * 13.** string (regular twine or cotton string is fine)