While students finalize their rockets, examine them to ensure that they are airtight.If they are too tight, it will be difficult to slide the completed rockets over the launch tube. They should slide freely along the PVC rocket form. Be sure that the rocket-body tubes that students roll are slightly loose.Students may work in pairs to build more than one rocket to observe design differences. Working in pairs works best for younger students and can be useful for brainstorming between older students. Decide in advance if students will each build their own rocket or will work in teams.Safety Note: Use caution when cutting the PVC for the launcher and rocket forms.You may also use a fine-tooth saw to cut PVC.
If you do not own a PVC cutter, it's a good idea to purchase one or ask the hardware store to pre-cut the PVC pipe for you in the specified lengths. While at the hardware store, purchase enough 1/2-inch PVC pipe to make the launchers and the rocket forms. Take the Stomp Rocket Launcher Assembly Instructions to a hardware store to make purchasing the right pieces easy.
2 liter bottle rocket designs pdf#
Data Sheets - Download PDF (printout) OR XLSX (digital) Altitude Tracker (printed on cardstock) - Download PDF Empty 2-liter bottle (plus spares if available) 5-foot length of 1/2-inch PVC pipe cut into various lengths (see assembly instructions for lengths) Stomp Rocket Assembly Instructions - Download PDF 24-inch length of 1/2-inch PVC pipe (for the rocket form) 2 sheets of 8.5 x 11-inch paper (white or color) OR custom skins - Download PDF Student Instruction Sheet (optional) - Download PDF
Based on the flight performance of their rockets, analyze their rocket designs, modify or rebuild them, launch again, and calculate the altitude achieved to determine if their changes affected the performance of the rocket.Following the flight of their rocket, calculate the altitude their rocket achieved.Work individually or in teams of two to construct and launch paper rockets using a teacher-built PVC-pipe launcher.There is no maximum number of fins, but the more fins, the more drag your rocket will have. Your rocket should have a minimum of 3 fins.
This allows for more surface area to attach the fins as well.
If the glue cracks, the fins can come off during launch.Īnother option, that requires a little more work, is to make a skirt to extend the bottom of the bottle around the nozzle. Many types of glue do not expand when pressurizing the pressure chamber. Some designers prefer using glue to attach fins, while others prefer tape. If the fins come off during the stress of launch they will not help your rocket fly straight. Rocket fins should be stiff and not flop around. It is also important to remember Center of Gravity and Center of Pressure to determine size and placement of fins. Just like the feathers at the end of an arrow, the fins, with greater drag, keep the fins at the back and the nose at the front. Without fins the rocket will wobble and tumble. The stability of a rocket keeps if flying through the air pointed in the right direction.
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