Argus As 8

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As 8
Argus As 8 1.jpg
Argus As 8 aircraft engine
Type Piston aircraft engine
Manufacturer Argus Motoren

The Argus As 8 was a four-cylinder, air-cooled, inverted inline aircraft engine produced in Germany by Argus Motoren in the 1930s.

Variants[edit]

As 8A
Initial production version 71 kW (95 hp) maximum for 5 minutes, 60 kW (80 hp) continuous.
As 8B
A more powerful variant developing 101 kW (135 hp) maximum for 5 minutes, 86 kW (115 hp) continuous.
As 8R
A variant produced for sport aircraft, particularly for competition use, developing 110 kW (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[edit]

Specifications (As 8B)[edit]

Data from [1]

General characteristics

  • Type: 4-cylinder inverted air-cooled in-line piston engine
  • Bore: 120 mm (4.72 in)
  • Stroke: 140 mm (5.51 in)
  • Displacement: 6.333 l (386.46 cu in)
  • Length: 1,075 mm (42.3 in) without airscrew hub
  • Width: 470 mm (18.5 in)
  • Height: 731 mm (28.8 in)
  • Dry weight: 116 kg (256 lb) empty

Components

  • Valvetrain: Overhead valves operated by pushrods and rockers
  • Fuel system: One down-draught carburretor
  • Fuel type: Aviation gasoline
  • Oil system: Pressure feed
  • Cooling system: Air-cooled

Performance

  • Power output: 101 kW (135 hp) maximum for 5 minutes at 2200 rpm, 86 kW (115 hp) continuous at 2090 rpm.
  • Compression ratio: 5.36:1
  • Specific fuel consumption: 212 g/PSh at maximum, 236 g/PSh at continuous
  • Oil consumption: 1.2 kg (2.6 lb) / hour

See also[edit]

Comparable engines
Related lists

References[edit]

  1. ^ "Argus AS-8 R:". he64.info. Retrieved 12 August 2014. 

Gunston, Bill (1986). World Encyclopedia of Aero Engines. Wellingborough: Patrick Stephens. p. 15.