Keywords: Junkers Jumo 004 Plug Actuator.jpg en The exhaust area of the 004 featured a variable geometry nozzle which had a special restrictive body nicknamed the Zwiebel German for onion due to its shape when seen from the side which had roughly 40 cm 16 inch fore-and-aft travel to vary the jet exhaust's cross-sectional area for thrust control as the active part of a pioneering divergent-convergent nozzle format 2001-11-12 http //www laugle com/Jumo004 html John W Laugle cc-zero Uploaded with UploadWizard Junkers Jumo 004 Sectioned jet engines |