{{short description|1910s German piston aircraft engine}} {{infobox aero engine |name =Argus As I |image = File:Argus As 1 Flugwerft Schleissheim.jpg |caption= Argus As I on display at the Deutsches Museum Flugwerft Schleissheim |engine_type =Piston aero-engine |national_origin =Germany |manufacturer =Argus |designer = |first_run ={{circa|1911}} |major_applications=Sikorsky Ilya Muromets |produced =c.1911-1913 |number_built = |Total program cost= |developed_from =Argus 70 hp |variants_with_their_own_articles = }}
The '''Argus As I''' was a four-cylinder, water-cooled, aircraft engine produced in Germany by Argus Motoren from 1911 until about 1913.
The engine saw widespread use in aircraft in pre-war Germany and initially was also sold under the brand name 'Aviatik' of the Automobil und Aviatik AG.<ref name="Aviatik1911">''Aviatik-Flugzeuge'', 1911, pp. 18-20 (see also Krzyzan; Steinle. 1989, pp. 86-88)</ref> It also was license produced in France by Automobiles Rossel and sold in France under the brand names 'Aviatik' and 'Aviatic-Rossel' by Louis Clément, the local sales representative of the Automobil und Aviatik AG.<ref>Flugsport 1/1912, pp. 14–15</ref><ref>Österreichische Flug-Zeitschrift, 1914</ref>
==Design and development== The 100 hp Argus As I first can be found in a 1911 brochure of the Automobil und Aviatik AG.<ref name="Aviatik1911"/> It had a bore and stroke of {{cvt|140|mm}} and was rated {{cvt|100|hp}} at 1,250 rpm.<ref name="Angle1921">Angle. 1921, p. 49, listed as 'Type II'</ref> The general design of the engine was the same as the smaller Argus 70 hp four-cylinder engine.
The engine cylinders were of cast iron, cast in pairs of two cylinders, with the cooling jackets integral in the casting. There were two overhead valves per cylinder, which were operated via pushrods and rocker arms from the camshaft on the left side of the engine. The intake valves were oriented to the center of each cylinder pair, and their intake ducts were conjoined within the casting into a single external port facing to the left side of the engine. The intake manifold was made of cast aluminum and a single Cudell-G.A.-carburettor was installed.
The crankcase was made of aluminum and cast in separate upper and lower half parts, with the lower half having four mounting arms cast into it. Each cylinder pair was fixated to the crankcase by six bolts. The crankshaft was supported by two outer ball bearings and one intermediate plain bearing.
The camshaft was driven from the crankshaft by spur gears at the control end. The engine had one or two spark plugs per cylinder and a single Bosch-magneto located at the control side of the engine, driven from the crankshaft via an intermediate spur gear.<ref name="Aviatik1911"/> The coolant was circulated by a centrifugal water pump which was installed on the carburettor side and driven from the camshaft gear.
==Applications== *Aviatik P 13<ref>Grosz. 2003, ''Aviatik B-Types'', p. 1</ref> *Euler Taube<ref>Grosz. 2004, ''The Taube at War'', p. 6</ref> *Jeannin Stahltaube 1912/13<ref name="Krzyzan">Krzyzan; Steinle. 1989, pp. 34–35, 40–41</ref> *LVG B.I<ref>Grosz. 2003, ''The LVG B.I'', p. 8</ref> *Rumpler Taube<ref>Grosz. 2004, ''The Taube at War'', p. 33</ref> *Sikorsky Russky Vityaz<ref>Smithsonian Institution NASM, ''Milestones of Aviation'', 1995, p. 163</ref> *Sikorsky Ilya Muromets<ref>Smithsonian Institution NASM, ''Milestones of Aviation'', 1995, Chapter: FARTHER: The Quest for Distance, by Terry Gwynn-Johns, pp. 25–27</ref><ref name="MilFact">[http://www.militaryfactory.com/aircraft/detail.asp?aircraft_id=584 Military Factory: ''Sikorsky II'ya Murometz'']</ref>
==Specifications== thumb|right|100 hp Argus As I 3-view drawing {{pistonspecs| <!-- If you do not understand how to use this template, please ask at Wikipedia talk:WikiProject Aircraft --> <!-- Please include units where appropriate (main comes first, alt in parentheses). If data are missing, leave the parameter blank (do not delete it). For additional lines, end your alt units with )</li> and start a new, fully formatted line with <li> --> |ref=''Huth''<ref name="Huth1914">Huth. 1914, pp. 73, 188</ref> |type=Four-cylinder, liquid-cooled piston engine |bore={{cvt|140|mm|2}} |stroke={{cvt|140|mm|2}} |displacement={{cvt|8.62|L|cuin|0}} |length= |diameter= |width= |height= |weight={{cvt|140|kg|1}} |valvetrain=one camshaft in the engine block, two overhead valves per cylinder actuated via roller tappets, pushrods and rocker arms |supercharger= |turbocharger= |fuelsystem= |fueltype= |oilsystem= |coolingsystem=Water-cooled |power={{cvt|100|PS}} at 1,250 rpm |specpower= |compression= |fuelcon= |specfuelcon= |oilcon= |power/weight= |designer= |reduction_gear=Direct-drive |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= *Argus 70 hp <!-- 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=
<!-- See WP:Air/PC for more explanation of these fields. --> }}
==References== {{Commons category|Argus As.I}} {{reflist}}
===Bibliography===
*{{cite book |title=Airplane Engine Encyclopedia: An Alphabetically Arranged Compilation Of All Available Data On The World's Airplane Engines |last=Angle |first=Glenn Dale |year=1921 |publisher=Otterbein Press |page=[https://archive.org/details/AirplaneEngineEncyclopedia/page/n53/mode/2up 49] |url=https://archive.org/details/AirplaneEngineEncyclopedia |ol=23525261M }}
*{{cite book |last=Huth |first=Fritz |title=Motoren für Flugzeuge und Luftschiffe |pages=73, 188 |publisher=R. C. Schmidt & co. |location=Berlin |year=1914 |language=de |url=https://catalog.hathitrust.org/Record/001646423 |oclc=11492610 }}
*{{cite book |author=<!--Staff writer(s); no by-line.--> |title=Aviatik-Flugzeuge |pages=[https://digital.staatsbibliothek-berlin.de/werkansicht?PPN=PPN815729995&PHYSID=PHYS_0022&DMDID=DMDLOG_0009 18–20] |publisher=Automobil und Aviatik AG |date=1911 |language=de |url=https://digital.staatsbibliothek-berlin.de/werkansicht/?PPN=PPN815729995 }}
*{{cite book |last1=Krzyzan |first1=Marian |last2=Steinle |first2=Holger |title=Die Jeannin-Stahltaube A.180/14 |publisher=Mittler |location=Herford; Bonn |year=1989 |language=de |isbn=3-8132-0313-1 }}
*{{cite journal |author=<!--Staff writer(s); no by-line.--> |title=Die Flugmotore auf dem III. Pariser Salon |journal=Flugsport |volume=IV |issue=1 |publisher=Oskar Ursinus |location=Frankfurt am Main |language=de |year=1912 |pages=14–15 |url=https://books.google.com/books?id=opSiDAAAQBAJ }}
*{{cite journal |author=<!--Staff writer(s); no by-line.--> |title=Der Sieg des deutschen Motors |journal=Österreichische Flug-Zeitschrift |publisher=Österreichischer Flugtechnischer Verein |location=Wien |language=de |year=1914 |page=99 |url=https://catalog.hathitrust.org/Record/012313162 |oclc=33911622 }}
*{{cite book |last=Grosz |first=P M |title=Aviatik B-Types, Windsock Datafile No.102 |publisher=Albatros Productions |location=Berkhamsted |year=2003 |edition= |isbn=1-902207-57-2 }}
*{{cite book |last=Grosz |first=P M |title=The Taube at War, Windsock Datafile No.104 |publisher=Albatros Productions |location=Berkhamsted |year=2004 |edition= |isbn=1-902207-59-9 }}
*{{cite book |last=Grosz |first=P M |title=LVG B.I, Windsock Datafile No.98 |publisher=Albatros Productions |location=Berkhamsted |year=2003 |edition= |isbn=1-902207-53-X }}
*{{cite book |author=Smithsonian Institution NASM |title=Milestones of Aviation |publisher=Beaux Arts Editions; Greenwood, John T, Editor |year=1995 |edition=Second |isbn=0-88363-661-1 |url=https://books.google.com/books?id=fdzcZT2lrZoC }}
{{Argus aeroengines}} {{aeroengine-specs}} Category:Argus aircraft engines Category:1910s aircraft piston engines Category:Liquid-cooled aircraft piston engines Category:Straight-four engines