{{Short description|Family of aircraft engines}} <!-- This article is a part of [[Wikipedia:WikiProject Aircraft]]. Please see [[Wikipedia:WikiProject Aircraft/page content]] for recommended layout. --> {{infobox aero engine |name= GO-480 |image= File:Lycoming GO-480 Flugwerft Schleissheim.jpg |caption= Lycoming GO-480-B1 on display at the [[Deutsches Museum Flugwerft Schleissheim]] |engine_type= [[Piston]] [[aircraft engine|aero-engine]] |national_origin=[[United States]] |manufacturer= [[Lycoming Engines]] |produced= 1954–1986 out of production |developed_from= [[Lycoming O-320]] |first_run= 1953 |major_applications= {{ubl | [[Dornier Do 27]] | [[Helio Courier]] | [[Utva 66]] }} }}
The '''Lycoming GO-480''' is a family of six-[[cylinder (engine)|cylinder]], [[flat engine|horizontally opposed]] [[fixed-wing aircraft]] engines of 479.6 cubic inch (7.86 L) displacement, made by [[Lycoming Engines]]. The engine is a six-cylinder version of the four-cylinder [[Lycoming O-320]].
==Design and development== GO-480 series engines are installed on a number of different aircraft types.<ref name="L2"/> Their main competitive engines are the [[Continental IO-520]] and [[Continental IO-550|IO-550]] series.
==Variants== All engines have an additional prefix preceding the ''480'' to indicate the specific configuration of the engine. Although the series is known as the "O-480", there are only geared engines in the series.<ref name="TC275">[http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/0af77afe525ae7868525670e00537965/$FILE/E-275.pdf FAA GO-480 Series Type Certificate.] Retrieved on 10 January 2009.</ref><ref name="TC284">[http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/f5a16a0263d426ff8525670e0053b056/$FILE/E-284.pdf FAA Lycoming GSO-480 Series Type Certificate.] Retrieved on 10 January 2009.</ref> There are also numerous engine suffixes, denoting different accessories such as different manufacturers' carburetors, or different [[ignition magneto| magneto]]s.
;GO-480 :Normally aspirated '''O'''pposed engine, equipped with a [[carburetor]] and '''G'''earbox at the front end of the crankshaft to drive the propeller at a lower RPM than the engine.<ref name="L2"/>
;GSO-480 :[[supercharger|'''S'''upercharger]] driven by the engine, gearbox to drive propeller, and equipped with a carburetor. Designated the '''O-480-1''' by the US military.<ref name="L2">[https://archive.today/20121220014221/http://home.comcast.net/~aeroengine/Lycoming2.html Page listing all variants of the Lycoming O-480 series.] Retrieved on 10 January 2009.</ref>
;IGSO-480 :Supercharger driven by the engine, gearbox to drive propeller, with [[fuel injection]]. Designated the '''O-480-3''' by the US military.<ref name="L2"/>
;IGO-480 :Gearbox to drive propeller, normally aspirated with fuel injection.<ref name="L2"/>
==Applications== * [[Aero Commander 500 family|Aero Commander 560, 560A, 560E and 680, 680E and the pressurized 720 Alti-Cruiser]]. * [[Aermacchi AM.3|Aermacchi AM3CM (Bosbok)]] * [[Beechcraft Twin Bonanza]] * [[Beechcraft Queen Air]] * [[Dornier Do 27]] * [[Fuji KM-2]] * [[Fuji T-3]] * [[Helio Courier]] * [[Pilatus PC-6 Porter]] * [[Soko J-20 Kraguj]] * [[Temco 58]] * [[Utva 66]]
==Specifications (GSO-480-A1A6)== {{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=''FAA Type Certificate.''<ref name="TC284"/> |type=Six-cylinder air-cooled geared supercharged [[flat engine|horizontally opposed engine]] |bore=5.125 in (130 mm) |stroke=3.875 in (98 mm) |displacement=479.6 in<sup>3</sup> (7.86 L) |length= |diameter= |width= |height= |weight=498 lb dry (226 kg) |valvetrain=Two [[overhead valve]]s per cylinder |supercharger=11.27:1 ratio, providing 48" Hg (1.6 atm / 8.8 psi) manifold pressure at sea level at maximum power |turbocharger= |fuelsystem= |fueltype=100 [[octane rating]] [[gasoline]] |oilsystem= |coolingsystem=Air-cooled |power=340 hp at 3,400 rpm at sea level |compression=7.3:1 |specpower= |fuelcon= |specfuelcon= |oilcon= |power/weight= |reduction_gear=77:120 (.642:1) }}
==See also== {{aircontent <!-- first, the related articles that do not fit the specific entries: --> |see also=
<!-- designs which were developed into or from this aircraft or engine: --> |related=
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<!-- 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= *[[Continental O-470]] <!-- See [[WP:Air/PC]] for more explanation of these fields. --> }}
==References== {{Commons category}} {{Reflist}}
{{Lycoming aeroengines}} {{US military piston aeroengines}}
[[Category:Lycoming aircraft engines|O-480]] [[Category:1950s aircraft piston engines]] [[Category:Boxer engines]] [[Category:Air-cooled aircraft piston engines]] [[Category:Six-cylinder engines]]