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Argus As 411
Renault 12


Argus As 411

A twelve-cylinder, air-cooled, inverted-V aircraft engine developed by Argus Motoren in Germany during World War II , the As 411 was a refined and more powerful version of the Argus As 410. Most 411 production was undertaken by Renault in occupied Paris, these engines were used to power the Siebel Si 204 and the post war Dassault MD 315 Flamant. It developed 600 PS (592 hp, 441 kW) at 3,300 rpm.

Following the end of World War II, Renault continued to manufacture the engine as the Renault 12S. After merging the French aircraft engine manufacturers into SNECMA in 1945, production continued under the new designation SNECMA 12.

Approximately 2,600 were built.


As 411
A refined and more powerful version of the Argus As 410.

Renault 12S
Production of the As 411 after WWII in France.

SNECMA 12S; (a.k.a. SNECMA Renault 12T) Designation change on the formation of SNECMA.

(a.k.a. SNECMA Renault 12T) Refined version of the 12T with new pistons and cylinders, with a revised induction system.


Arado Ar 96
Breguet 892 Mercure (4 × 12S)
Dassault MD 315 Flamant
Focke-Wulf Fw 189
Pilatus P-2
Siebel Si 204
Sud Ouest S.O.93


As 411

Type: 12-cylinder inverted 60-degree Vee
Dry weight: 385 kg (849 lb)
Cooling system: Air-cooled
Power output: 600 PS (592 hp, 441 kW) at 3,300 rpm
Compression ratio: 6.4:1


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