01 Junkers Jumo 004 Turbojet	02 Junkers Jumo 004 Turbojet	03 Junkers Jumo 004 Nose cone	04 Riedel Starter Motor
05 Riedel 2 cycle Starter Motor	06 Riedel Starter Motor	07 B4 Filler Cap	08 Junkers Jumo 004 Jet Engine Fuel Injection Controls
09 Junkers Jumo 004 Electrical Controls	10 Junkers Jumo 004 Oil Filler	11 Junkers Jumo 004 Jet Engine Fuel Control	12 Junkers Jumo 004 Engine Mount
13 Junkers Jumo 004 Jet Exhaust	14 Junkers Jumo 004 Turbojet

Junkers Jumo 004B Orkan Turbojet Engine Specifications:

Three other Junkers Jumo 004B Turbojets and two WWII Messerschmitt Me-262 German Jets at other Aviation Museums in the Northeast
Junkers Jumo 004B cutaway at the New England Air Museum in Hartford, CT	Junkers Jumo 004B Turbojet cutaway at the US Air Force Museum in Dayton, OH
German WWII Messerschmitt Me-262 figther jet at the Delaware Valley Historical Aviation Association in Wilow Grove, PA	Messerschmitt Me-262 Swallow at the US Air Force Museum in Dayton, OH
	Another Junkers Jumo 004B Turbojet Engine at the Wings Of Eagles Museum in Horseheads, NY

Weight: 1,640lbs
Length: 152 inches
Diameter: 30 inches
Output: 1,984lbs thrust
Turbine: 8 stage compressor, single stage exhaust turbine, adjustable exhaust cone
Starter Motor: Reidel 2 cycle 10hp@6,000rpm Started electrically from cockpit or manually via pull ring cord in jet engine nose
Starting RPM: 800
Operating RPM: 8,700
Operating Temp: 1,427°F
TBO - Time Between Overhauls: 50hrs (rarely achieved)
Airframes used on: German WWII Messerschmitt ME 262 Swallow, Arado Ar 234 Blitz Jet Bomber
Built in: 1944
Cost: $

This Junkers Jumo 004B Turbojet exhibit is unique in that the Reidel 2 cycle starter motor is clearly visible. The Reidel starter motor was started either electrically from the cockpit or by manually using a lawn mower type pull cord with a ring that protrudes from the jet engine nose cone. The Reidel starter motor was fueled by A3 80 octane gasoline and 5% two stroke oil in a .8 gallon annular tank in the nose of the engine nacelle.

Once the Reidel starter motor has started the turbine is allowed to spin up to 800rpm. At this point the pilot presses 2 buttons, one to inject B4 (smelly synthetic brown coal fuel oil) and 3% oil into the combustion chambers and another to light up the spark plugs to ignite the fuel oil mixture. At 1,800rpm the starter button could be released shutting off the starter motor allowing the turbine to spool up on its own. At 3,000rpm the ignition button for the spark plugs could be released and fuel flow would be switched to straight B4 from the main fuel tanks. After this the throttles could be advanced gradually to full power.

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