Glider Ground Effect Demonstration
t is simply mind boggling how far a glider can fly low to the ground and stay in what is called ground effect. Ground effect is simply flying very near the ground (under one wingspan from the dirt) and magically the lift is increased and drag is decreased. If you want to know why, do a google search. Haha. The net effect is it seems like the glider can just keep gliding right over the ground forever. In this video the glider flew over a mile in ground effect and only lost 5 miles per hour. Please do not try to fly like this or try to recreate this experiment. It is very easy to touch down too fast (I came very close!) or overshoot the end of the runway and then not have enough energy to pull up safely and turn back and land...
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