Junkers Jumo 012

The Junkers Jumo 109-012, known after the war simply as the Jumo 012, was a turbojet engine under development in Germany during the Second World War. It was in essence a scaled-up Jumo 004, which had already reached serial production by 1944, and it was meant to power the EF 132 and variants of the Ju 287 heavy jet bombers. Junkers first proposed uprated 109-004G and 109-004H versions of the older engine, but these were rejected as not powerful enough, so the firm designed the 109-012 instead, with an 11-stage axial compressor and a two-stage turbine. The Air Ministry ordered ten pre-production engines to be built at Dessau, but in December 1944 it ordered work to stop, and by the end of the war only a mock-up had been completed. Its planned maximum thrust was 27.3 kN.