AT the end of the war in Europe, Germany had two aircraft jet engines in operational use; the Junkers Jumo 004, which has already been described, and the BMW 003 which forms the subject of this article. Compared with the Junkers 004 the BMW engine can be described as having gone one stage further in the development of the axial compressor engine, but production figures were not as great as those of the Junkers. Several hundred had been built, mainly for the Heinkel He 162 Volksjäger—the high‐speed fighter with the engine mounted over the fuselage. The engines made in the 003 series are the 003‐A0, ‐Al, ‐A2, ‐E1 and ‐E2. These are all similar and have much the same performance. The latest in this series, the 003‐A2, is shown in fig. 1, and although production was planned on a large scale, only a few of this type were actually made.
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