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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 the world with axial-flow compressors, afterburning, and a variable area exhaust nozzle. The original 004 A model flew for the first time in 1942, but it was not suitable for production because it was too heavy and used alloys in short supply in Germany.

The 004 B production model was easier to manufacture, weighed less, and used air cooling for the combustor, turbine blades, and exhaust nozzle. The engine powered the Messerschmitt Me 262, the first operational jet fighter, and the Arado 234, the first operational jet bomber and reconnaissance airplane. Volume production of the 004 B began in early 1944. Junkers manufactured nearly 6,000 Jumo 004 engines by the end of World War II.

Transferred from the U.S. Air Force, Wright-Patterson Air Force Base, Ohio

Type:turbojet

Thrust/speed:8,807 N (1,980 lb) at 8,700 rpm

Compressor:8-stage axial flow

Combustor:6 straight-through chambers

Turbine:1-stage axial flow

Manufacturer:Junkers Flugzeug und Motorenwerke A.G., Dessau, Germany

A19670124000

 Display Status

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.
Object Details
Key Accomplishment(s) Forerunner of the Modern Jet Engine Brief Description This was the world’s first mass-produced turbojet engine. Germany built nearly 6,000 Jumo 004 engines by the end of World War II. Every jet engine in the world is derived from this axial flow design. Date 1944 Country of Origin Germany Type PROPULSION-Turbines (Jet) Designer Dr Anselm Franz
 Manufacturer Junkers Flugzeug und Motorenwerke A.G.
 Physical Description Type: Turbojet Thrust/speed: 8,807 N (1,980 lb) at 8,700 rpm Compressor: 8-stage axial Combustor: 6 straight-through chambers Turbine: Single-stage axial Manufacturer: Junkers Flugzeug und Motorenwerke A.G., Dessau, Germany Dimensions Overall: 387.3 × 253.4 × 81.3cm, 739.4kg (12 ft. 8 1/2 in. × 8 ft. 3 3/4 in. × 2 ft. 8 in., 1630lb.)
 Alternate Name Jumo 004B Engine Inventory Number A19670124000 Credit Line Transferred from the U.S. Air Force, Wright-Patterson AFB, Ohio Data Source National Air and Space Museum Restrictions & Rights Usage conditions apply
For more information, visit the Smithsonians Terms of Use. Deep dives World War II