Perform Preflight Inspection
A careful inspection of the paper plane prior to initially flying it saves time adjusting and repairing it after the first attempted flight. Examine the front and rear carefully by looking directly at it from different angles. Make sure both wings align and that the surfaces angle the same. Check to be certain the tail is not crooked, as this causes planes to perform poorly in flight. Make all the adjustments and correct any potential problems.
Indoor or Outdoor
Unique flying techniques differ with planes designed for indoor or outdoor flying. For example, heavier aircraft work better outdoors because they are not as affected by the wind. For outdoor planes, consider designing a plane that requires two sheets of paper. Use one for the fuselage and one for the wings. Paper clips or tape help add extra weight for planes you want to fly outdoors to prevent stalling. Consider the distance the plane will be flying. Make several identical models and try them out both indoors and outdoors. The best planes for indoor flying are those that need calm air and limited space.
Launching Techniques
Weather conditions dictate launching techniques. Launch with force or do it softly, depending on circumstances. If you launch directly into the wind on a breezy day, the plane will climb into a half-barrel roll. After initially flying upside down, it will correct itself by flipping over and will fly for long distances with the wind. Gently launch the plane horizontally on days with little wind. Calm days provide the plane with a long glide path and it will usually fly in a straight line or in a gentle curve.
Correcting Techniques
Observe the plane while in flight. Correct problems by experimenting with different bends on the control surfaces. If the plane banks to the right or left, cut flaps on the rear edge of the wings and bend the flaps up or down as needed. Make small adjustments at first and then launch a test flight to check for corrections. Choose from several different models to find the one that flies well and lives up to your expectations.