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#11
November 2nd 07, 01:27 PM
posted to rec.aviation.soaring
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Winch launch speed versus height gain
115 kph is about 63knots, which is close to the ideal
speed for launching a K21 (I reckon 65 knots), which I guess equals the best L/D speed allowing for the extra wing loading caused by the cable pull. Any faster or slower than this will give a less high launch as the glider is flying less efficiently. 90 kph is pretty close to the loaded stall speed. Del Copeland At 22:24 01 November 2007, Andreas Maurer wrote: Definitely not with our 280 hp Turbo Diesel winch and an ASK-21. 90 kp/h gets about 350 meters, 115 kp/h gets over 400 meters. Bye Andreas 
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