Wingtip Flap System Provides Variable Wing Area, Sweep
Method of varying both the geometry and wing area of a variety of aircraft is being flight tested in Peru on a modified Beech 18. The concept, called the wingspan flap, is being developed by Fabrica Nacional de Aeroplanos S. A. (Fanasa), Peruvian aircraft company, under direction of Alberto Alvarez-Calderon, vice president-engineering.
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