Dynamic Soaring close to 400 mph Great Day at Weldon, California. Dynamic Soaring breaking record. Close to 400 mph RC Gliders without any propellers or motors. December 22, 2009
Dynamic soaring is a flying technique used to gain energy by repeatedly crossing the boundary between air masses of significantly different velocity. Such zones of high wind gradient are generally found close to obstacles and close to the surface, so the technique is mainly of use to birds and operators of radio-controlled gliders, but glider pilots have occasionally been able to soar dynamically in meteorological wind shears at higher altitudes. The highest speeds reported are by radio controlled gliders at 505 mph (813 km/h).[1]
Dynamic soaring is sometimes confused with controllable slope soaring which uses a similar but different technique for achieving elevation.