Heinkel HeS 011

The Heinkel HeS 011, also called the Heinkel-Hirth 109-011, was an advanced Second World War turbojet built by Heinkel-Hirth. It combined a low-compression impeller in the intake, a diagonal compressor stage similar to a centrifugal one and a three-stage axial compressor, driven by a two-stage turbine, in effect merging the designs of the von Ohain and Müller teams. The prototype ran at about 12.7 kilonewtons of thrust against roughly 8 kilonewtons for the BMW 003 and Junkers Jumo 004. Prototypes were available in 1944 and were tested under a Heinkel He 111, and many late-war German fighter designs were based on it, but only nineteen engines were completed and it never entered production. Two survive in museums in the United States.