The Bolkhovitinov DB-A (Dal′niy Bombardirovshchik — “Long-Range Bomber”, Academy) was a Soviet four-engine heavy bomber developed in the mid-1930s by a design team at the Zhukovsky Air Force Academy under the leadership of Viktor Bolkhovitinov Intended to replace the ageing Tupolev TB-3 the DB-A featured stressed-skin construction improved aerodynamics, and more powerful engines
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