n 1941 the company started to develop Messerscmitt option stratospheric long-range bomber Me-264 with 4 motors Jumo-223 that was expected could reach a maximum speed of 700 km / h, reach a height of 14-15 km without refueling and carry out flights lasting 50-60 hours. The record company Jumo from 11.04.1941, there has been particular engine Jumo-223, and issues related to the preparation of serial production Jumo-223:
