It’s good to be a water rocket
The principle of a water rocket. As the name suggests, a water rocket uses water as a medium to pour high-pressure gas into the water rocket. According to the principle of high-pressure flowing to low-pressure. Open the nozzle, and the high-pressure gas quickly pushes the water out of the nozzle. According to Newton's third law of motion, a reaction force is given to the water rocket to make the water rocket rush forward. Materials for the water rocket 1. 1250CC plastic bottle, two water rocket bodies 2. Strong glue, insulating tape (electrical fire cloth), double-sided tape to connect the rocket body 3. Utility knife, scissors, ruler, cutting mat 4. Nozzle, pump (with pressure Table), launcher production process 1. Prepare two 1250cc or 2000cc (same size) PET bottles 2. Divide one of the PET bottles into three parts; leave the mouth and middle part of the bottle 3. Divide the remaining Put the bottom and mouth of another PET bottle on the bottle mouth and middle section respectively. Remember to apply adhesive and fix it with insulating tape. PS: Please keep the rocket body in a straight line. 4. Use thick transparent film or pearl plate to make it. Assemble four pieces of tail fin and fix them evenly on the rear half of the rocket. PS: Apply adhesive and secure with tape. Not evenly distributed or fixed will affect the direction of the rocket. 5. Put on the rocket head and nozzle, and prepare to fly high. 6. Prepare to launch on the launcher. 7. Fill the water rocket body with 250-300cc of water and lock it. Insert the nozzle into the launch valve (you need to hear a click to confirm the clamping). Adjust the launch angle and use an air pump (bicycle pump) to increase the air pressure to the required air pressure from the air pump (bicycle pump) under the launch valve. Press the remote control handle. The water rocket will be shot out and the water rocket can be reused