In this historical photo from the U.S. space agency, a JUMO 004 Jet Propelled Engine with cover removed is exhibited on March 24, 1946, for the Inspection by the Institute of Aeronautical Science Group. Design variables and the arrangement of blades on the eight-stage axial flow compressor of a Junkers Jumo, 004, turbojet engine is shown being investigated at the Aircraft Engine Research Laboratory of the National Advisory Committee for Aeronautics, Cleveland, Ohio, now known as John H. Glenn Research Center at Lewis Field.
The National Advisory Committe on Aeronautics (NACA) was a precursor to NASA. NACA was created by Congress in 1915.
Each weekday, SPACE.com looks back at the history of spaceflight through photos (archive).