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The Argus As 5 was a large 24-cylinder 6 blocks' star aircraft engine, designed and built in Germany in the early 1920s by Argus Motoren.
| As 5 | |
|---|---|
| |
| Argus As-5 at the Polish Aviation Museum in Kraków. | |
| Type | 24-cylinder double W |
| National origin | Germany |
| Manufacturer | Argus Motoren |
| First run | 1924 |
| Number built | 3 |
Design and development edit
Following the Armistice of 1918, Germany continued to build aircraft and engines under the control of the Military Inter-Allied Commission of Control. For use on very large aircraft, Argus designed and built the As 5 WW-24 water-cooled piston engine.
The As 5 consisted of six banks of cylinders arranged around a common crankshaft with a single output shaft. Each cylinder drove the crankshaft through a master and slave big end, similar to most radial engines. The top and bottom sets of three cylinder banks were set at 45° to each other with a 90° separation between the outermost banks.
Individual cylinders with sheet metal water jackets shared the aluminium alloy heads, four to a bank. Inlet and exhaust valves were actuated by shaft driven overhead camshafts. The aluminium alloy crankcase was split top and bottom.
Although some testing was carried out, the As 5 never flew and was abandoned along with the very large aircraft projects it was intended to power.
Engines on display edit
A single example survives on display at the Polish Aviation Museum in Kraków, Poland.
Specifications edit
Data from Pearce.[1]
General characteristics
- Type: WW-24, 24 cylinder six bank double W, water-cooled
- Bore: 160 mm (6.3 in)
- Stroke: 195 mm (7.7 in)
- Displacement: 94.1 L (5,740 cu in)
- Dry weight: 1,100 kg (2,400 lb)
Components
- Cooling system: Water-cooled
Performance
- Power output: 1,120 kW (1,500 hp) at 1,800 rpm
- Compression ratio: 5.6:1
References edit
- ^ Pearce, William (23 September 2012). "Argus As 5 Aircraft Engine". oldmachinepress.wordpress.com. Retrieved 6 March 2015.
Further reading edit
- Kisselmann, Wulf Dieter (2012). ARGUS : Flugmotoren und mehr ... (in German) (1. Aufl. ed.). Empfingen: Schiff et Flugzeug-Verl.-Buchhandlung im Buchzentrum. ISBN 978-3867552202.
- von Gersdorff, Kyrill; Schubert, Helmut; Ebert, Stefan; Faltermair, Richard (2007). Flugmotoren und Strahltriebwerke : Entwicklungsgeschichte der deutschen Luftfahrtantriebe von den Anfängen bis zu den internationalen Gemeinschaftsentwicklungen (in German) (4. erg. und erw. Aufl. ed.). Bonn: Bernard & Graefe. ISBN 9783763761289.
- Giger, Hans (1986). Kolben-Flugmotoren : Geschichte und Entwicklung in Wort und Bild (in German) (1. Aufl. ed.). Stuttgart: Motorbuch Verlag. ISBN 978-3613010895.
External links edit
