The Rolls-Royce RB.183 Tay is a medium-bypass

turbofan The turbofan or fanjet is a type of airbreathing jet engine that is widely used in aircraft engine, aircraft propulsion. The word "turbofan" is a portmanteau of "turbine" and "fan": the ''turbo'' portion refers to a gas turbine engine which ac ...

engine, developed from the RB.183 Mk 555 Spey core and using a fan scaled directly from the Rolls-Royce RB.211-535E4 to produce versions with a

bypass ratio The bypass ratio (BPR) of a turbofan engine is the ratio between the mass flow rate of the bypass stream to the mass flow rate entering the core. A 10:1 bypass ratio, for example, means that 10 kg of air passes through the bypass duct for ev ...

of 3.1:1 or greater. The IP compressor and LP turbine were designed using technology from the RB.211 programme. The engine was first run in August 1984. 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. The Tay family is used on a number of

airliner An airliner is a type of aircraft for transporting passengers and air cargo. Such aircraft are most often operated by airlines. Although the definition of an airliner can vary from country to country, an airliner is typically defined as an ...

s and larger business jets, including the

Gulfstream IV The Gulfstream IV (or G-IV or GIV) and derivatives are a family of twinjet aircraft, mainly for private or business use. They were designed and built by Gulfstream Aerospace, a General Dynamics company based in Savannah, Georgia, United State ...

family,

Fokker 70 The Fokker 70 is a narrow-body, twin-engined, medium-range, turbofan regional airliner designed and produced by the Dutch aircraft manufacturer Fokker. It was developed during the early 1990s as a smaller version of the newly-developed Fokker ...

and

Fokker 100 The Fokker 100 is a regional jet produced by Fokker in the Netherlands. The Fokker 100 is based on the Fokker F28 with a fuselage stretched by to seat up to 109 passengers, up from 85. It is powered by two newer Rolls-Royce Tay turbofans, ...

, with a later version being used to re-engine

Boeing 727-100 The Boeing 727 is an American Narrow-body aircraft, narrow-body airliner that was developed and produced by Boeing Commercial Airplanes. After the heavy Boeing 707, 707 quad-jet was introduced in 1958, Boeing addressed the demand for shorter f ...

Variants

Tay 611-8

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 A full authority digital engine (or electronics) control (FADEC) is a system consisting of a digital computer, called an "electronic engine controller" (EEC) or "engine control unit" (ECU), and its related accessories that control all aspects of ai ...

. 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

lbf The pound of force or pound-force (symbol: lbf, sometimes lbf,) is a unit of force used in some systems of measurement, including English Engineering units and the foot–pound–second system. Pound-force should not be confused with pound-m ...

(62 kN) Aircraft: Tay 611 entered service in 1987 on the Gulfstream IV/IV-SP, for which it is the exclusive powerplant.

Tay 620-15

The 620-15 is internally identical to the 611-8 and externally similar to the 650-15. Thrust: 13,850

(62 kN) Aircraft:

from 1994,

from 1988

Tay 650-15

Thrust: 15,100

(67 kN) Aircraft: Originally designed to re-engine the

BAC One-Eleven The BAC One-Eleven (or BAC-111/BAC 1-11) was an early jet airliner produced by the British Aircraft Corporation (BAC). Originally conceived by Hunting Aircraft as a 30-seat jet, before its merger into BAC in 1960, it was launched as an 80-se ...

(650-14, only two made; both have since been converted to 650-15 standard.), the 650-15 entered service on the

in 1989.

Tay 651-54

The 651-54 is internally identical to the 650-15. The externals and gearbox suit the Boeing 727.FAA Type Certificate Data Sheet Thrust: 15,400

(69 kN) Aircraft:

from

1992 File:1992 Events Collage V1.png, From left, clockwise: 1992 Los Angeles riots, Riots break out across Los Angeles, California after the Police brutality, police beating of Rodney King; El Al Flight 1862 crashes into a residential apartment buildi ...

. Conversion from three 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 United Parcel Service (UPS, stylized as ups) is an American multinational corporation, multinational package delivery, shipping & receiving and supply chain management company founded in 1907. Originally known as the American Messenger Company ...

, but all aircraft have since been withdrawn from service. Only one private 727 was converted.

Applications

BAC 1-11 The BAC One-Eleven (or BAC-111/BAC 1-11) was an early jet airliner produced by the British Aircraft Corporation (BAC). Originally conceived by Hunting Aircraft as a 30-seat jet, before its merger into BAC in 1960, it was launched as an 80-s ...

QF *

* Gulfstream G350/G400/G450 *

Gulfstream X-54 The Gulfstream X-54 is a proposed research and demonstration aircraft, under development in the United States by Gulfstream Aerospace for NASA, that is planned for use in sonic boom and supersonic transport research. Design Initiated during 200 ...

Specifications (Tay 620-15)

References

Notes

Bibliography

FAA Type Certificate Data Sheet
*Gunston, Bill. ''World Encyclopedia of Aero Engines''. Cambridge, England. Patrick Stephens Limited, 1989.
Rolls-Royce Tay product page

External links

Rolls-Royce Tay
{{Swedish military gas turbine aeroengines Medium-bypass turbofan engines

Tay Tay may refer to: People and languages * Tay (name), including lists of people with the given name, surname and nickname * Tay people, an ethnic group of Vietnam ** Tày language *Atayal language, an Austronesian language spoken in Taiwan (ISO 639 ...

1980s turbofan engines