Click to open image viewer. Junkers Jumo 004 B4 Designed by Dr. Anselm Franz, the Junkers Jumo 004 was the world’s first mass-produced, operational turbojet engine. It was also the first turbojet in ...
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Why the Me 262's jet engines were so unreliable

The Messerschmitt Me 262 became the first operational jet fighter, but its Junkers Jumo 004 engines were a persistent weakness. Shortages of rare materials meant the engines relied on steel parts that ...