Goebel Goe III
The Goebel Goe III was an air-cooled nine-cylinder - aircraft engine . The largest German rotary engine with a displacement of 27 liters was developed towards the end of the First World War in Darmstadt by the Gandenberger'schen Maschinenfabrik Georg Goebel . Until the war, only 229 Goe III were produced.
history
In mid-1917, the Allied fighter pilots were increasingly overwhelming. The German aircraft manufacturers could only fall back on liquid-cooled in- line engines of the 160-185 HP class ( Mercedes D IIIa , Benz Bz IIIa / Bz IV , BMW IIIa etc.). The obvious solution was to rely more on rotary engines again, as these had a higher specific power (PS / kg). The Oberursel engine factory created the UR.III double radial engine, Siemens-Halske the Sh.III and Georg Goebel designed the Goe III in 1918. All were designed for an output of around 180 hp. The Siemens-Schuckert D.IV showed that the considerations for installing rotary motors were correct.
The few Goe IIIs were tested in various prototypes, although use on a larger scale in a production aircraft is not known. Of the already small Fokker D.VI series, only 12 machines were equipped with Goe III engines.
Technical specifications
- Type: air-cooled nine-cylinder - rotary engine
- Displacement : 27 l
- Dry weight: 178 kg
- Start Power : 187 hp (137 kW) at 1250 min -1
- Continuous power: 165 hp (120 kW) at 1200 min -1
- Unit weight: 0.91 kg / hp
- Specific fuel consumption : 320 g / PSh (435 g / kWh)
Planes
- Fokker V.5 (prototype of Dr.I)
- Fokker D.VI
- Fokker V.28 (prototype of the D.VIII)
- Condor E.III
- LFG Roland D.XVI
- Palatinate D.VI
- Palatinate D.VII
- Palatinate D.VIII
literature
- Kyrill von Gersdorff, Kurt Grasmann: aircraft engines and jet engines . Bernard & Graefe Verlag, 1981, ISBN 3-7637-5272-2 .
Web links
- Rotary aircraft engine Goebel Goe.III. with nine cylinders - original drawing ( Memento from December 19, 2012 in the Internet Archive )