1 Figure 1: Around 50 red wool threads follow the pro- gression of the air cur- rent and indicate unde- sirable turbulence. The flying eye Camera makes currents visible in gliding flight For a glider to glide as long as possible, air has to flow perfectly around the airfoils. To find out if it does, you need either a multi-million Euro wind tunnel or some 3 m wool threads and a USB camera. "Victor Echo, the cable is taught." T

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