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{{short description|1930s German piston aircraft engine}}
<!-- This article is a part of [[Wikipedia:WikiProject Aircraft]]. Please see [[Wikipedia:WikiProject Aircraft/page content]] for recommended layout. -->
<!-- This article is a part of [[Wikipedia:WikiProject Aircraft]]. Please see [[Wikipedia:WikiProject Aircraft/page content]] for recommended layout. -->
{|{{Infobox Aircraft Begin
{|{{Infobox Aircraft Begin
|name=As 8
|name=As 8
|image=File:Argus As 8 1.jpg
|image=Argus As 8 1.jpg
|caption=Argus As 8 aircraft engine
|caption=Argus As 8 aircraft engine
}}{{Infobox Aircraft Engine
}}{{Infobox Aircraft Engine
|type=[[Piston]] [[aircraft engine]]
|type=[[Reciprocating engine|Piston]] [[aircraft engine]]
|manufacturer=[[Argus Motoren]]
|manufacturer=[[Argus Motoren]]
|first run=
|first run=
Line 18: Line 19:
|}
|}


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


==Specifications==
==Variants==
;As 8A:Initial production version {{convert|95|hp|kW|abbr=on|disp=flip}} maximum for 5 minutes, {{convert|80|hp|kW|abbr=on|disp=flip}} continuous.
* '''Bore:''' 120 mm (4.7 in)
;As 8B:A more powerful variant developing {{convert|135|hp|kW|abbr=on|disp=flip}} maximum for 5 minutes, {{convert|115|hp|kW|abbr=on|disp=flip}} continuous.
* '''Stoke:''' 140 mm (5.5 in)
;As 8R:A variant produced for sport aircraft, particularly for competition use, developing {{convert|150|hp|kW|abbr=on|disp=flip}} for take-off. Featuring:
* '''Displacement:''' 6.3 L (386 cu in)
:*Increased compression ratio, from 5.36 to 5.8
* '''Power:''' 80 kW (110 hp) at 2,100 rpm
:*Improved cooling by increasing the numbers of cooling fins at the cylinder head and the cylinder body
* '''Length:''' 1,070 mm (42 in)
:*Increasing the heat dispersing area of the pistons
* '''Width:''' 421 mm (17 in)
:*Improved crankcase and oil cooling
* '''Height:''' 890 mm (35 in)
:*Improved cylinder charging
* '''Weight:''' 113 kg (249 lb)
:*Modified valve timing


==Applications==
==Applications==
* [[Albatros L 100]]
*[[Albatros L 100]]
* [[Albatros Al 101]]
*[[Albatros Al 101]]
* [[Arado L II]]
*[[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|Raab-Katzenstein RK.25/32]]
*[[Ruhrtaler Ru.3]]

==Specifications (As 8B)==
{{pistonspecs|
<!-- If you do not understand how to use this template, please ask at [[Wikipedia talk:WikiProject Aircraft]] -->
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|ref=Flugzeug-Typenbuch. Handbuch der deutschen Luftfahrt- und Zubehör-Industrie 1944,<ref name=schneider>{{cite book |last=Schneider |first=Helmut (Dipl.Ing.) |title=Flugzeug-Typenbuch. Handbuch der deutschen Luftfahrt- und Zubehör-Industrie 1944 |date=1944 |publisher=Herm. Beyer Verlag |location=Leipzig |isbn=381120484X |edition=Facsimile reprint 1986 |language=German |page=357}}</ref> Argus AS-8R<ref name=he64.com>{{cite web|title=Argus AS-8 R:|url=http://he64.com/?site=Engine&lang=en|website=he64.com|accessdate=12 August 2014}}</ref>
|type=4-cylinder inverted air-cooled in-line piston engine
|bore={{convert|120|mm|in|abbr=on|2}}
|stroke= {{convert|140|mm|in|abbr=on|2}}
|displacement={{convert|6.332|L|cuin|abbr=on|2}}
|length={{convert|1075|mm|in|abbr=on|1}} without airscrew hub
|diameter=
|width={{convert|470|mm|in|abbr=on|1}}
|height={{convert|731|mm|in|abbr=on|1}}
|weight={{convert|116|kg|lb|abbr=on}} dry
::::{{cvt|128.4|kg|0}} 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 {{cvt|3|-|6|bar|psi}}
|coolingsystem=Air-cooled
|power=<br>
:*{{cvt|135|PS|hp kW|0}} at 2,200 rpm (5 minutes) at sea level
:*{{cvt|125|PS|hp kW|0}} at 2,150 rpm (30 minutes) at sea level
:*{{cvt|115|PS|hp kW|0}} at 2,090 rpm (max continuous) at sea level
|specpower={{cvt|21.3|PS/L|hp/cuin kW/L}}
|compression=5.35:1
|fuelcon=
|specfuelcon=<br>
:*{{cvt|0.235|kg/PSh|lb/hph kg/kWh}} at maximum rpm
:*{{cvt|0.230|kg/PSh|lb/hph kg/kWh}} at maximum continuous rpm
|oilcon={{cvt|0.008|kg/PSh|lb/hph kg/kWh}} at maximum continuous rpm
|power/weight={{cvt|1.149|PS/kg|hp/lb kW/kg}}
*'''B.M.E.P.:''' {{cvt|7.7|atm|bar psi}}
|designer=
|reduction_gear=

|general_other=
|components_other=
|performance_other=
}}

==See also==
{{aircontent
<!-- other related articles that have not already linked: -->
|see also=

<!-- designs which were developed into or from this aircraft: -->
|related=

<!-- aircraft that are of similar role, era, and capability as this design: -->
|similar aircraft=

<!-- relevant lists that this aircraft appears in: -->
|lists=
*[[List of aircraft engines]]
<!-- For aircraft engine articles. Engines that are of similar to this design: -->
|similar engines=
*[[Alfa Romeo 115|Alfa Romeo 110]]
*[[Blackburn Cirrus Major]]
*[[de Havilland Gipsy Major]]
*[[Elizalde Tigre IV]]
*[[Hirth HM 504]]
*[[Menasco C4]]
<!-- See [[WP:Air/PC]] for more explanation of these fields. -->
}}


==References==
==References==
{{Reflist}}

==Further reading==
{{cite book |last= Gunston |first= Bill |title=World Encyclopedia of Aero Engines |year=1986 |publisher=Patrick Stephens |location= Wellingborough |pages=15 }}
{{cite book |last= Gunston |first= Bill |title=World Encyclopedia of Aero Engines |year=1986 |publisher=Patrick Stephens |location= Wellingborough |pages=15 }}

* [http://www.luftfahrtmuseum.com/htmd/dtf/as8.htm Das Virtuelle Luftfahrtmuseum]
==External links==
{{Commons category|Argus As 8}}
* [https://web.archive.org/web/20070930184633/http://www.luftfahrtmuseum.com/htmd/dtf/as8.htm Das Virtuelle Luftfahrtmuseum]


{{Argus aeroengines}}
{{Argus aeroengines}}
{{Aviation lists}}


[[Category:Aircraft piston engines]]
[[Category:Air-cooled aircraft piston engines]]
[[Category:Argus aircraft engines]]
[[Category:Argus aircraft engines]]
[[Category:1930s aircraft piston engines]]

[[Category:Inverted aircraft piston engines]]
[[it:Argus As 8]]

Latest revision as of 23:51, 30 September 2022

As 8
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 Flugzeug-Typenbuch. Handbuch der deutschen Luftfahrt- und Zubehör-Industrie 1944,[1] Argus AS-8R[2]

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: 6.332 L (386.40 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) dry
128.4 kg (283 lb) equipped

Components

  • Valvetrain: Overhead valves operated by pushrods and rockers
  • Fuel system: One down-draught carburretor
  • Fuel type: 80 Octane Aviation gasoline
  • Oil system: Pressure feed at 3–6 bar (44–87 psi)
  • Cooling system: Air-cooled

Performance

  • Power output:
  • 135 PS (133 hp; 99 kW) at 2,200 rpm (5 minutes) at sea level
  • 125 PS (123 hp; 92 kW) at 2,150 rpm (30 minutes) at sea level
  • 115 PS (113 hp; 85 kW) at 2,090 rpm (max continuous) at sea level
  • 0.235 kg/PSh (0.53 lb/(hp⋅h); 0.320 kg/kWh) at maximum rpm
  • 0.230 kg/PSh (0.51 lb/(hp⋅h); 0.313 kg/kWh) at maximum continuous rpm
  • Oil consumption: 0.008 kg/PSh (0.018 lb/(hp⋅h); 0.011 kg/kWh) at maximum continuous rpm
  • Power-to-weight ratio: 1.149 PS/kg (0.514 hp/lb; 0.845 kW/kg)
  • B.M.E.P.: 7.7 atm (7.8 bar; 113 psi)

See also

[edit]

Comparable engines

Related lists

References

[edit]
  1. ^ Schneider, Helmut (Dipl.Ing.) (1944). Flugzeug-Typenbuch. Handbuch der deutschen Luftfahrt- und Zubehör-Industrie 1944 (in German) (Facsimile reprint 1986 ed.). Leipzig: Herm. Beyer Verlag. p. 357. ISBN 381120484X.
  2. ^ "Argus AS-8 R:". he64.com. Retrieved 12 August 2014.

Further reading

[edit]

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

[edit]
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