Argus As 8

Argus Motoren

Industry	Aircraft engine manufacturing
Founded	1930s
Headquarters	Germany

The Argus As 8 was a German-made, four-cylinder, air-cooled, inverted inline piston engine designed for aircraft use during the 1930s by Argus Motoren.

Variants

As 8A

The initial model delivering a peak power output of 71 kW (95 hp) for short durations (up to 5 minutes) and a continuous rating of 60 kW (80 hp).

As 8B

An enhanced version with increased power, capable of producing 101 kW (135 hp) for 5 minutes and a sustained output of 86 kW (115 hp).

As 8R

Specialized for sport and competitive aviation, this variant offered 110 kW (150 hp) at take-off, incorporating:

• A raised compression ratio from 5.36 to 5.8
• Enhanced cooling achieved by adding more cooling fins to both the cylinder head and body
• Expanded piston surface area to improve heat dissipation
• Upgraded crankcase and oil cooling systems
• Optimized cylinder charging
• Altered valve timing for better performance

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)

{{pistonspecs| |ref=Flugzeug-Typenbuch. Handbuch der deutschen Luftfahrt- und Zubehör-Industrie 1944, |type=4-cylinder inverted air-cooled inline piston engine |bore=120 mm (4.72 in) |stroke=140 mm (5.51 in) |displacement=6.332 L (386.40 cu in) |length=1,075 mm (42.3 in) excluding propeller hub |width=470 mm (18.5 in) |height=731 mm (28.8 in) |weight=116 kg (256 lb) dry weight

128.4 kg (283 lb) fully equipped

|valvetrain=Overhead valves actuated by pushrods and rocker arms |fuelsystem=Single downdraft carburetor |fueltype=80 Octane aviation gasoline |oilsystem=Pressure lubrication system operating between and −6 |coolingsystem=Air-cooled configuration |power=

• 135 PS (99 kW) at 2,200 rpm (maximum for 5 minutes) at sea level
• 125 PS (92 kW) at 2,150 rpm (30-minute rating) at sea level
• 115 PS (85 kW) at 2,090 rpm (maximum continuous) at sea level

|max_power_rpm= |max_continuous_power_rpm= |max_short_power_rpm= |max_power_altitude= |max_continuous_power_altitude= |max_short_power_altitude= |max_power_duration= |max_continuous_power_duration= |max_short_power_duration= |max_power_cooling= |max_continuous_power_cooling= |max_short_power_cooling= |max_power_fuel_type= |max_continuous_power_fuel_type= |max_short_power_fuel_type= |max_power_oil_system= |max_continuous_power_oil_system= |max_short_power_oil_system= |max_power_valve_train= |max_continuous_power_valve_train= |max_short_power_valve_train=

|max_power_supercharger= |max_continuous_power_supercharger= |max_short_power_supercharger=

|max_power_turbocharger= |max_continuous_power_turbocharger= |max_short_power_turbocharger=

1. Note: The above lines are placeholders and can be removed if not needed.

1. Continuing with the original data:

1. Spec power output per liter:
2. Compression ratio:
3. Fuel consumption:
4. Oil consumption:
5. Power-to-weight ratio:
6. Brake mean effective pressure:

1. These are included below:

|} }

External links

• Das Virtuelle Luftfahrtmuseum