{{Short description|French turboshaft engine}} <!-- This article is a part of [[Wikipedia:WikiProject Aircraft]]. Please see [[Wikipedia:WikiProject Aircraft/page content]] for recommended layout. --> {{infobox aero engine |name = Arriel |image = Turboméca Arriel cutaway.jpg |caption = Cutaway of a Turbomeca Arriel |engine_type=[[Turboshaft]] |manufacturer= Turbomeca<br/> [[Safran Helicopter Engines]] |national_origin=France |first_run=1974 |major_applications=[[Agusta A109]] <br> [[Eurocopter MH-65 Dolphin]] <br> [[Sikorsky S-76]] <br> [[Harbin Z-9]] <br> [[Harbin Z-19]] |number_built =10,000 |developed_from = |developed_into = |variants_with_their_own_articles = }}
The '''Turbomeca Arriel''' is a series of French [[turboshaft]] engines that first ran in 1974.<ref>Gunston 1989, p.170.</ref> Delivering {{cvt|650 to 1,000|hp|kW}}, over 12,000 Arriel engines have been produced from 1978 to 2018, logging more than 50 million flight hours for 40 helicopter applications.<!--<ref name=AIN27jun2018>--> In June 2018, 1,000 Arriel 2D were in service, powering [[H125]] and [[H130]] single-engine helicopters, having logged one million flight hours since 2011.<!--<ref name=AIN27jun2018>--> After endurance tests and fleet data analysis, their [[time between overhaul|TBO]] increased by 25% to 5,000 hours and mandatory inspection rose to 15 years with no hourly limit, lowering maintenance costs.<ref name=AIN27jun2018>{{cite news |url= https://www.ainonline.com/aviation-news/business-aviation/2018-06-27/safran-boosts-arriel-2d-tbo-25-percent |title= Safran Boosts Arriel 2D TBO by 25 Percent |work= AIN online |author= Mark Huber |date= June 27, 2018}}</ref>
In 2021 Safran opened a production facility in [[Grand Prairie, Texas]] for production of Arriel 2E engines, which had previously only been produced in France.<ref name="AvWebOct2021">{{cite news |last1=O'Connor |first1=Kate |title=Safran Opens Arriel 2E Assembly Line In U.S. |url=https://www.avweb.com/ownership/engines/safran-opens-arriel-2e-assembly-line-in-u-s/ |access-date=20 October 2021 |work=AVweb |date=19 October 2021}}</ref>
==Applications== * [[AgustaWestland AW109]] * [[Eurocopter AS365 Dauphin]] * [[Eurocopter AS565 Panther]] * [[Eurocopter MH-65 Dolphin]] * [[Eurocopter EC130]] * [[Eurocopter EC145]] * [[Eurocopter EC155]] * [[Eurocopter AS350 Écureuil]] * [[Harbin Z-9]] * [[Harbin Z-19]] * [[Kopter AW09]] * [[MBB/Kawasaki BK 117]] * [[Robinson R88]] * [[Sikorsky S-76]]
==Specifications (Arriel 2)== {{jetspecs| <!-- 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=''EASA Type Certificate Data Sheet'' for Model 2B.<ref>[https://www.easa.europa.eu/en/downloads/7801/en EASA Type Certificate Data Sheet] Retrieved: 2 December 2025</ref> |type=[[Turboshaft]] [[Aircraft engine|engine]] |length={{convert|1.181|m|abbr=on}} |diameter={{convert|0.616|m|abbr=on}} |weight={{convert|134|kg|abbr=on}} |compressor=Single-stage [[Axial compressor|axial]] plus single-stage [[Centrifugal compressor|centrifugal]] |combustion=[[Combustor#Annular|Annular combustion chamber]] |turbine=Single-stage [[Free-turbine turboshaft|power turbine]], two-stage [[gas generator]] turbine |fueltype=[[Jet fuel|Jet A1]] |oilsystem= |power= {{convert|747|shp|kW|abbr=on}} |thrust= |compression= 8:1 |aircon= |turbinetemp= {{convert|915|°C|abbr=on}} |fuelcon= |specfuelcon= |power/weight= {{convert|4.2|kW/kg}} approx |thrust/weight= }}
==See also== {{aircontent <!-- first, the related articles that do not fit the specific entries: --> |see also=
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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=
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==References== {{reflist}} * {{cite book |last= Gunston |first= Bill |title=World Encyclopedia of Aero Engines |year=1986 |publisher=Patrick Stephens |location= Wellingborough |pages=166 }}
==External links== {{Commons category}} * [https://www.safran-helicopter-engines.com/helicopter-engines/lower-1000-shp/arriel Turbomeca Arriel official site]
{{Turbomeca aeroengines}}
[[Category:Turbomeca aircraft engines|Arriel]] [[Category:1970s turboshaft engines]]