Argus As 8
1930s German piston aircraft engine
title: "Argus As 8" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["air-cooled-aircraft-piston-engines", "argus-aircraft-engines", "1930s-aircraft-piston-engines", "inverted-aircraft-piston-engines"] description: "1930s German piston aircraft engine" topic_path: "general/air-cooled-aircraft-piston-engines" source: "https://en.wikipedia.org/wiki/Argus_As_8" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::summary 1930s German piston aircraft engine ::
::data[format=table title="infobox aero engine"]
| Field | Value |
|---|---|
| name | As 8 |
| image | Argus As 8 1.jpg |
| caption | Argus As 8 aircraft engine |
| engine_type | Piston aircraft engine |
| manufacturer | Argus Motoren |
| :: |
|name=As 8 |image=Argus As 8 1.jpg |caption=Argus As 8 aircraft engine |engine_type=Piston aircraft engine |manufacturer=Argus Motoren |first_run= |major_applications= |number_built = |developed_from = |developed_into = |variants_with_their_own_articles =
The Argus As 8 was a four-cylinder, air-cooled, inverted inline aircraft engine produced in Germany by Argus Motoren in the 1930s.
Variants
;As 8A:Initial production version 95 hp maximum for 5 minutes, 80 hp continuous. ;As 8B:A more powerful variant developing 135 hp maximum for 5 minutes, 115 hp continuous. ;As 8R:A variant produced for sport aircraft, particularly for competition use, developing 150 hp for take-off. Featuring: :*Increased compression ratio, from 5.36 to 5.8 :*Improved cooling by increasing the numbers of cooling fins at the cylinder head and the cylinder body :*Increasing the heat dispersing area of the pistons :*Improved crankcase and oil cooling :*Improved cylinder charging :*Modified valve timing
Applications
- Albatros L 100
- Albatros Al 101
- Arado L II (As 8A)
- Arado L IIa (As 8R)
- Baumgärtl Heliofly III
- BFW M.23
- BFW M.27
- BFW M.29
- BFW M.35
- Blohm & Voss Ha 136
- Comte AC-12 Moskito
- Darmstadt D-22
- DFS 40
- Focke-Wulf Fw 44
- Heinkel He 64
- Heinkel He 72
- Klemm L 25E
- Klemm Kl 32
- Raab-Katzenstein RK.25/32
- Ruhrtaler Ru.3
Specifications (As 8B)
and start a new, fully-formatted line with -- |ref=Flugzeug-Typenbuch. Handbuch der deutschen Luftfahrt- und Zubehör-Industrie 1944, Argus AS-8R |type=4-cylinder inverted air-cooled in-line piston engine |bore=120 mm |stroke= 140 mm |displacement=6.332 L |length=1075 mm without airscrew hub |diameter= |width=470 mm |height=731 mm |weight=116 kg dry ::::128.4 kg equipped |valvetrain=Overhead valves operated by pushrods and rockers |supercharger= |turbocharger= |fuelsystem=One down-draught carburretor |fueltype=80 Octane Aviation gasoline |oilsystem=Pressure feed at 3 - |coolingsystem=Air-cooled |power=
:*135 PS at 2,200 rpm (5 minutes) at sea level :*125 PS at 2,150 rpm (30 minutes) at sea level :*115 PS at 2,090 rpm (max continuous) at sea level |specpower=21.3 PS/L |compression=5.35:1 |fuelcon= |specfuelcon=
:*0.235 kg/PSh at maximum rpm :*0.230 kg/PSh at maximum continuous rpm |oilcon=0.008 kg/PSh at maximum continuous rpm |power/weight=1.149 PS/kg
- B.M.E.P.: 7.7 atm |designer= |reduction_gear=
|general_other= |components_other= |performance_other=
References
References
- Schneider, Helmut (Dipl.Ing.). (1944). "Flugzeug-Typenbuch. Handbuch der deutschen Luftfahrt- und Zubehör-Industrie 1944". Herm. Beyer Verlag.
- "Argus AS-8 R:".
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