Powered hang gliding follows the same basic principles as normal hang gliding except that the glider has a motor and propeller installed at the back. Powered gliders allow the pilot a greater degree of control and the ability to stay in the air much longer. Fundamentally the design is the same as a traditional glider, and the wing and control frame are identical. Traditional hang gliders usually use a •foot-launchê, where the pilot jumps from a high point. But an advantage of the powered glider is that it can launch from a flat surface..