![]() ![]() If you tried two different-length paper cylinders for your rocket experiments, you may have noticed that the longer rocket flew further/higher than the shorter one. The V-shaped nose helps it cut through the air as it flies the fins help keep the rocket moving in a straight line. Your paper rocket has been designed to move through the air efficiently, too. Things that are designed to travel quickly, such as sports cars and jets, are shaped to minimize the amount of air they push aside to move forward. In order to move through the air, a rocket has to push air aside. Be sure to tape both sides of each fin to the rocket. Tape the fins to the sides of the rocket at the base.Draw a line from one corner of the rectangle to the other, cut along it through both halves, and you’ll have four triangular fins (see photo below). Then unfold it, cut along the fold line, and stack the two halves. To make them from a 3 x 5 index card, fold the card in half to make a short rectangle. Finally, you can add fins, which will help your rocket fly straight.Use tape to seal the point so it’s airtight. Slip it off the pipe, and then, using your scissors, clip one end of the tube in a V to make the pointed “nose” of the rocket (see photo below). Tape the paper tube so it stays rolled up.Don’t roll the paper too tight you should be able to easily slide it off. To make the rocket’s body, roll a sheet of 8.5 x 11 (A4) paper into a cylinder that will fit over the launcher-end of your PVC assembly (see photo below).Slip the 2-liter bottle over the end of the longest piece of PVC pipe and you’re ready for launch!.Notice that the angle can be changed by rotating the elbow relative to the base of the launcher. This is the part of the launcher where the rocket goes. Add the third 1-foot (30-cm) length of PVC pipe to the end of the elbow.Add the PVC elbow, facing upward, to the open end of the 3-inch (8-cm) length of pipe.Put an end cap on each of the ends of the two 1-foot (30-cm) lengths of PVC pipe that you just added to the quad joint. ![]()
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