How Do You Make A Paper Airplane That Flies Straight?
There are lots of ways to fold a paper airplane, but the arrow-shaped javelin-type flies the straightest. This model is sometimes called the “dart” or “arrow.” Even glider models can be made to fly straight by carefully adjusting the surfaces on the backs of their wings. Careful, even folds and sharp creases also improve straight flying. Fold a piece of standard 8 1/2- by 11-inch paper in half lengthwise. Match the corners perfectly so the crease is exactly down the middle of the paper. Do this on a very flat, smooth surface to get the best possible fold. Sharpen the crease by rubbing the bottom of a glass or other smooth object along the crease. You want as close to a knife-edge crease as possible. Fold the nose. Hold the piece of paper portrait-style with the fold pointing downward. Take the top right hand corner of the paper and fold it into the crease so the new fold is at a 45-degree angle across the top right of the paper. Repeat with the top left corner. Use the smooth object to
