View source for Rolls-Royce RB.183 Tay

{{Short description|Medium-bypass turbofan aircraft engine}}
{{for|the earlier turbojet|Rolls-Royce RB.44 Tay}}
<!-- This article is a part of [[Wikipedia:WikiProject Aircraft]]. Please see [[Wikipedia:WikiProject Aircraft/page content]] for recommended layout. -->
{{Use dmy dates|date=August 2017}}
{{Use British English|date=August 2017}}
{|{{Infobox Aircraft Begin
 |name= Tay
 |image= Rolls-Royce RB.183 Tay RRHT Derby.jpg
 |caption= Rolls-Royce RB.183 Tay turbofan engine on display at the [[Rolls-Royce Heritage Trust, Derby]]
}}{{Infobox Aircraft Engine
 |type=[[Turbofan]]
 |manufacturer=[[Rolls-Royce plc]]
 |first run=1984
 |major applications= [[Fokker 70]] <br> [[Fokker 100]] <br> [[Gulfstream IV]] <br> [[Gulfstream G450|Gulfstream G350/G400/G450]]
 |number built =
 |program cost =
 |unit cost =
 |developed from = [[Rolls-Royce Spey]]
 |developed into =
 |variants with their own articles =
 |successor = [[Rolls-Royce BR700]]
}}
|}

The '''Rolls-Royce RB.183 Tay''' is a medium-bypass [[turbofan]] engine, developed from the [[Rolls-Royce Spey|RB.183 Mk 555 Spey]] core and using a fan scaled directly from the [[Rolls-Royce_RB211#RB211-535_series|Rolls-Royce RB.211-535E4]] to produce versions with a [[bypass ratio]] of 3.1:1 or greater. The IP compressor and LP turbine were designed using technology from the RB.211 programme.<ref>"Developing the Rolls-Royce Tay' M.J.Wilson ASME-880051</ref> The engine was first run in August 1984.<ref>Gunston 1989, p.153.</ref> The Tay 650 had a new HP turbine which incorporated new technology which had been proven with the RB.211-535E4. This engine also had a new combustor for improved durability.<ref>"Developing the Rolls-Royce Tay' M.J.Wilson ASME-880051</ref>
The Tay family is used on a number of [[airliner]]s and larger business jets, including the [[Gulfstream IV]] family, [[Fokker 70]] and [[Fokker 100]], with a later version being used to re-engine [[Boeing 727|Boeing 727-100]]s.

==Variants==
{{Unreferenced section|date=January 2011}}
{{anchor|611-8}}
===Tay 611-8===
[[File:Klm f100 ph-kle arp.jpg|thumb|Rolls-Royce Tay on a Fokker 100, with thrust reverser engaged.]]
Originally designated 610-8, all but one training engine have now been converted to 611-8 standard. The newest variant is the 611-8C, which has cast HP1 turbine blades, larger fan from the 650-15, structural by-pass duct and [[FADEC]].

All Tay engines use a 22-blade titanium fan, a 3-stage intermediate-pressure compressor coupled to the fan shaft, a 12-stage high-pressure compressor, a 2-stage high-pressure turbine and a 3-stage low-pressure turbine.

Thrust: 13,850 [[pound-force|lbf]] (62 [[newton (unit)|kN]])
Aircraft: Tay 611 entered service in 1987 on the [[Gulfstream IV|Gulfstream IV/IV-SP]], for which it is the exclusive powerplant.

===Tay 620-15===
[[File:N650DH BAC 111-401AK One-Eleven (cn 059) Dee Howard. (5644120829).jpg|thumb|A BAC 1-11 re-engined with the Tay]]
The 620-15 is internally identical to the 611-8 and externally similar to the 650-15.

Thrust: 13,850 [[pound-force|lbf]] (62 [[newton (unit)|kN]])
Aircraft: [[Fokker 70]] from 1994, [[Fokker 100]] from 1988
===Tay 650-15===
Thrust: 15,100 [[pound-force|lbf]] (67 [[newton (unit)|kN]])
Aircraft: Originally designed to re-engine the [[BAC 1-11|BAC One-Eleven]] (650-14, only two made; both have since been converted to 650-15 standard.), the 650-15 entered service on the [[Fokker 100]] in 1989.

===Tay 651-54===
The 651-54 is internally identical to the 650-15. The externals and gearbox suit the Boeing 727.<ref>FAA Type Certificate Data Sheet</ref>

Thrust: 15,400 [[pound-force|lbf]] (69 [[newton (unit)|kN]])
Aircraft: [[Boeing 727|Boeing 727-100]] from [[1992 in aviation|1992]]. Conversion from three [[Pratt & Whitney JT8D|JT8D-7]] to three Tay 651-54 was carried out by the now defunct Dee Howard Aircraft Maintenance Company in San Antonio, Texas, for the [[United Parcel Service]], but all aircraft have since been withdrawn from service. Only one private 727 was converted.

==Applications==
* [[BAC 1-11]]
* [[Boeing 727|Boeing 727-100]] QF
* [[Fokker 70]]
* [[Fokker 100]]
* [[Gulfstream IV]]
* [[Gulfstream G450|Gulfstream G350/G400/G450]]
* [[Gulfstream X-54]]

==Engines on display==
* A Tay RB.183 620-15 is on public display at the [[City of Norwich Aviation Museum]] in [[Horsham St Faith|Horsham St Faith, Norfolk]].<ref>{{cite web |title=Engines List |url=http://www.cnam.org.uk/engines-list |website=City of Norwich Aviation Museum |access-date=27 August 2023}}</ref>

==Specifications (Tay 620-15)==
{{jetspecs|
<!-- If you do not understand how to use this template, please ask at [[Wikipedia talk:WikiProject Aircraft]] -->
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|ref=''Rolls-Royce and FAA TCDS.''<ref>Rolls-Royce data sheet</ref><ref>FAA Type Certificate Data Sheet</ref>
|type=Twin-spool medium bypass turbofan
|length=94.7 in (240.5 cm)
|diameter=44 in (111.8 cm) (fan diameter)
|weight=3,310 lb (1,501 kg)
|compressor=Single-stage fan plus a 3-stage IP compressor (Same shaft.) and a 12-stage HP compressor
|combustion=10 can-annular combustion chambers
|turbine=2 stage HP turbine, 3 stage LP turbine
|fueltype=
|oilsystem=
|power=
|thrust=13,850 lbf (63 kN)
|compression=
|bypass=3.04:1
|aircon=
|fuelcon=
|specfuelcon=
|power/weight=
|thrust/weight=4.2
}}

==See also==
{{Aircontent
|related=

|similar engines=
* [[General Electric CF34]]
* [[IAE V2500]]
* [[Lycoming ALF 502]]
* [[PowerJet SaM146]]
* [[Pratt & Whitney PW6000]]
* [[Progress D-436]]
* [[Rolls-Royce BR700]]

|lists=
* [[List of aircraft engines]]

|see also=
}}

==References==

===Notes===
{{reflist}}

===Bibliography===
{{refbegin}}
*[http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/46c5ebf0369b23d786256ee60060ed8e/$FILE/E25NE.pdf FAA Type Certificate Data Sheet] {{Webarchive|url=https://web.archive.org/web/20100401001544/http://rgl.faa.gov/REGULATORY_AND_GUIDANCE_LIBRARY/RGMAKEMODEL.NSF/0/46c5ebf0369b23d786256ee60060ed8e/$FILE/E25NE.pdf |date=1 April 2010 }}
*Gunston, Bill. ''World Encyclopedia of Aero Engines''. Cambridge, England. Patrick Stephens Limited, 1989. {{ISBN|1-85260-163-9}}
*[http://www.rolls-royce.com/civil/products/smallaircraft/tay/ Rolls-Royce Tay product page]
{{refend}}

==External links==
{{Commons category}}
*[http://www.rolls-royce.com/products-and-services/civil-aerospace/business-aviation/tay.aspx Rolls-Royce Tay]

{{Rolls-Royce plc aeroengines}}
{{US military gas turbine aeroengines}}
{{Swedish military gas turbine aeroengines}}

[[Category:Medium-bypass turbofan engines]]
[[Category:Rolls-Royce aircraft gas turbine engines|Tay]]
[[Category:1980s turbofan engines]]