SW - Makhonine MAK-123

Before the WW2 there were many aircraft designers trying to construct airplane with variable-area wings, mostly in Soviet Union and France. In France, Ivan Makhonine, designer with Russian origin, developed the concept of hollow wings with a next, telescopic parts hidden inside. His first machine, Type 10 (later 101, after reconstruction) was tested until the WW2, with many complications, then Nazi took it, later it was damaged by guerillas and destroyed by American bomber attack. After WW2, Makhonine designed the Type 123, flying first time at Toussus-le-Noble in 1947. The machine was good enough first, but then its engine failed and the airplane was forced to emergency landing in potato field. Makhonine then didn't continue with his experiments anymore.