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The material presented in this book describes the history of the development, testing and limited operations of early Soviet autogyros. As in the rest of the world, autogyros appeared in the Soviet Union in a period of full exploration of the skies by airplanes and after the first unsuccessful experiences with helicopters. Enormous hopes were linked to the advent of autogyros among Soviet operating departments in the beginning of the 1930s. However an array of technical factors hindered their active introduction into civil and military service. The first Soviet autogyro, KASKR-1, which was...