Heinkel HeS 011

HeS 011
Preserved Heinkel HeS 011 at the NMUSAF,
its Riedel starter mounted atop the intake passage.
Type Turbojet
Manufacturer Heinkel
First run September 1943
Major applications Messerschmitt Me P.1101
Number built 19

The Heinkel HeS 011 or Heinkel-Hirth 109-011 (HeS - Heinkel Strahltriebwerke) was an advanced World War II jet engine built by Heinkel-Hirth. It featured a unique compressor arrangement, starting with a low-compression impeller in the intake, followed by a "diagonal" stage similar to a centrifugal compressor, and then a three-stage axial compressor. Many of the German jet-powered aircraft being designed near the end of the war were designed to use the HeS 011, but the engine itself was not ready for production before the war ended in Europe and only small numbers of prototypes were produced.