This book series is devoted to the latest POLYGON domestic attack helicopter Ka-50, adopted in 1995 by the Russian Army. Well-illustrated color photos and graphic images monograph contains a detailed history of the creation, construction of experienced instances and flight tests, the outlook for the world's first single attack helicopter. In describing the technical image of helicopters focused on the analysis of the advantages and disadvantages of the original coaxial scheme and has no analogues in the world of rescue crews. An overview of the development and current state of the world's fleet of attack helicopters.