Heinkel He-277,

Heinkel 277 airplane model. The Heinkel He 277 was a four-engine, long-range heavy bomber design, originating as a derivative of the He 177, intended for production and use by the German Luftwaffe during World War II. The main difference was in its engines. The He 177 used two Daimler-Benz DB 606 "power system" engines, each of which consisted of two combined Daimler-Benz DB 601 engines, each DB 606 weighed 1.5 tons.