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Garrett TFE731

December 30, 2023

The Garrett TFE731 (now Honeywell TFE731) is a family of geared turbofan engines commonly used on business jet aircraft. Garrett AiResearch originally designed and built the engine, which due to mergers was later produced by AlliedSignal and now Honeywell Aerospace.

Since the engine was introduced in 1972, over 11,000 engines have been built, flying over 100 million flight-hours.[1]

Development edit

 
Honeywell TFE731 and S-duct intake of a Dassault Falcon 900EX exposed during maintenance
 
View of a TFE731-4R in maintenance with cowlings, afterbody and thrust reverser removed.

The TFE731 was based on the core of the TSCP700, which was specifically developed for use as the auxiliary power unit (APU) on the McDonnell Douglas DC-10. The design featured two important factors: low fuel consumption, and low noise profiles that met the newly established U.S. noise abatement regulations.

The first test run of the TFE731 occurred in 1970 at Garrett's plant in Torrance, California.[2] The first production model, the TFE731-2, began rolling off the assembly line in August, 1972, and was used on the Learjet 35/36 and Dassault Falcon 10, both of which entered production in 1973.

The TFE731-3 was developed for use in the Lockheed JetStar re-engining program, and subsequent versions of it have been used on a number of aircraft, including the Learjet 55.

In 1975, the TFE731 was named Aviation Product of the Year by Ziff-Davis Publishing Company.[3]

The -5 model was certified in 1982, and a decade later, an engine utilizing the TFE731-5 power section and a TFE731-3 fan was built and designated the TFE731-4, intended to power the Cessna Citation VII aircraft.[4]

The most recent version is the TFE731-50, based on the -60 used on the Falcon 900DX, which underwent its flight test program in 2005. Honeywell has developed this engine complete with nacelle as a candidate to retrofit a number of aircraft equipped with older engines.[5]

Design edit

The TFE731-60 has an inlet diameter of 0.787 m. The fan consists of 22 fan blades, 52 exit-guide vanes, and ten struts, and is driven by a gearbox. The five-stage compressor has four axial (LP) stages and one radial or centrifugal (HP) stage.

Variants edit

TFE731-2
TFE731-3
TFE731-4
TFE731-5
TFE731-20
TFE731-40
TFE731-50
TFE731-60
TFE731-1100

Applications edit

Jet trainers

Business jets

Specifications edit

Data from FAA[6]

General characteristics

Components

Performance

See also edit

Related development

Comparable engines

Related lists

Notes edit

  1. ^ . Honeywell. Archived from the original on 2006-11-03. Retrieved 2006-12-05.
  2. ^ Schoneberger, William A.; Scholl, Robert R. H. (1985). Out of Thin Air: Garrett's First 50 Years. Phoenix: Garrett Corporation. p. 205. ISBN 0-9617029-0-7.
  3. ^ Schoneberger, p. 204.
  4. ^ "An Historical Look at the TFE731 Engine" (PDF). Duncan Debrief. Summer 2001. p. 11.
  5. ^ "Honeywell TFE731-50 Turbofan Engine Completes First Flight" (Press release). Honeywell. 2005-05-18. Retrieved 2006-12-05.
  6. ^ "type-certificate data sheet no. E6WE" (PDF). FAA. May 9, 2000.
  7. ^ a b c d "Gas Turbine Engines". Aviation Week & Space Technology. Jan 26, 2009. p. 119.
  8. ^ David Esler (Oct 27, 2016). "Honeywell's Super-Midsize HTF7000 Engine". Business & Commercial Aviation. Aviation Week.

References edit

  • Gunston, Bill (2006). World Encyclopedia of Aero Engines, 5th Edition. Phoenix Mill, Gloucestershire, England, UK: Sutton Publishing Limited. ISBN 0-7509-4479-X.
  • Leyes II, Richard A.; William A. Fleming (1999). "10". The History of North American Small Gas Turbine Aircraft Engines. Washington, DC: Smithsonian Institution. ISBN 1-56347-332-1.

External links edit

 
Wikimedia Commons has media related to Honeywell TFE731.

December 30, 2023
garrett, tfe731, honeywell, tfe731, family, geared, turbofan, engines, commonly, used, business, aircraft, garrett, airesearch, originally, designed, built, engine, which, mergers, later, produced, alliedsignal, honeywell, aerospace, tfe731tfe731, cessna, cita. The Garrett TFE731 now Honeywell TFE731 is a family of geared turbofan engines commonly used on business jet aircraft Garrett AiResearch originally designed and built the engine which due to mergers was later produced by AlliedSignal and now Honeywell Aerospace TFE731TFE731 4R of a Cessna Citation VIIType Geared turbofanNational origin United StatesManufacturer Garrett AiResearch Honeywell AerospaceFirst run 1970Major applications AIDC AT 3 CASA C 101 Cessna Citation III Hongdu JL 8 Dassault Falcon 900 Hawker 800 Learjet 31 Textron AirLand Scorpion Lockheed Martin RQ 170 SentinelNumber built 11 000 Developed into Honeywell ITEC F124 F125Since the engine was introduced in 1972 over 11 000 engines have been built flying over 100 million flight hours 1 Contents 1 Development 2 Design 3 Variants 4 Applications 5 Specifications 5 1 General characteristics 5 2 Components 5 3 Performance 6 See also 7 Notes 8 References 9 External linksDevelopment edit nbsp Honeywell TFE731 and S duct intake of a Dassault Falcon 900EX exposed during maintenance nbsp View of a TFE731 4R in maintenance with cowlings afterbody and thrust reverser removed The TFE731 was based on the core of the TSCP700 which was specifically developed for use as the auxiliary power unit APU on the McDonnell Douglas DC 10 The design featured two important factors low fuel consumption and low noise profiles that met the newly established U S noise abatement regulations The first test run of the TFE731 occurred in 1970 at Garrett s plant in Torrance California 2 The first production model the TFE731 2 began rolling off the assembly line in August 1972 and was used on the Learjet 35 36 and Dassault Falcon 10 both of which entered production in 1973 The TFE731 3 was developed for use in the Lockheed JetStar re engining program and subsequent versions of it have been used on a number of aircraft including the Learjet 55 In 1975 the TFE731 was named Aviation Product of the Year by Ziff Davis Publishing Company 3 The 5 model was certified in 1982 and a decade later an engine utilizing the TFE731 5 power section and a TFE731 3 fan was built and designated the TFE731 4 intended to power the Cessna Citation VII aircraft 4 The most recent version is the TFE731 50 based on the 60 used on the Falcon 900DX which underwent its flight test program in 2005 Honeywell has developed this engine complete with nacelle as a candidate to retrofit a number of aircraft equipped with older engines 5 Design editThe TFE731 60 has an inlet diameter of 0 787 m The fan consists of 22 fan blades 52 exit guide vanes and ten struts and is driven by a gearbox The five stage compressor has four axial LP stages and one radial or centrifugal HP stage Variants editTFE731 2 TFE731 3 TFE731 4 TFE731 5 TFE731 20 TFE731 40 TFE731 50 TFE731 60 TFE731 1100Applications editJet trainers Aero L 139 prototype only AIDC AT 3 Boeing Skyfox CASA C 101 FMA IA 63 Pampa Hongdu JL 8 Textron AirLand Scorpion Business jets BAe 125 Hawker 800 Cessna Citation III VI VII Dassault Falcon 10 Dassault Falcon 20 retrofit Dassault Falcon 50 Dassault Falcon 900 Gulfstream G100 ex IAI Astra IAI Westwind Learjet 31 Learjet 35 Learjet 40 Learjet 45 Learjet 55 Learjet 70 Lockheed JetStar Jetstar II North American Sabreliner 65 Experimental Yak 40MS upgradeSpecifications editData from FAA 6 General characteristics Type Geared turbofan Length 49 7 in 126 cm 7 Diameter 39 4 in 100 cm 7 Dry weight 743 899 lb 337 408 kg Components Compressor 1 stage fan 1 8 1 gearbox citation needed 4 axial LP stages 1 centrifugal HP stage Combustors Annular Turbine 1 stage HP turbine N2 max 29 692 30 540 RPM 3 stage LP turbine N1 max 20 688 21 000 RPM Performance Maximum thrust 3 500 4 750 lbf 15 6 21 1 kN Overall pressure ratio 13 1 7 Bypass ratio 2 8 1 citation needed Fuel consumption 875 lb h 397 kg h 8 Specific fuel consumption 0 469 0 517 lb lbf h 0 0133 0 0146 kg kN s 7 Thrust to weight ratio 4 7 5 3See also editGeared turbofanRelated development Honeywell ITEC F124 F125Comparable engines Lycoming ALF 502 LF 507 Pratt amp Whitney PW1000G Turbomeca Aspin Astafan IAE SuperFan Rolls Royce SNECMA M45SDRelated lists List of aircraft enginesNotes edit TFE731 Honeywell Archived from the original on 2006 11 03 Retrieved 2006 12 05 Schoneberger William A Scholl Robert R H 1985 Out of Thin Air Garrett s First 50 Years Phoenix Garrett Corporation p 205 ISBN 0 9617029 0 7 Schoneberger p 204 An Historical Look at the TFE731 Engine PDF Duncan Debrief Summer 2001 p 11 Honeywell TFE731 50 Turbofan Engine Completes First Flight Press release Honeywell 2005 05 18 Retrieved 2006 12 05 type certificate data sheet no E6WE PDF FAA May 9 2000 a b c d Gas Turbine Engines Aviation Week amp Space Technology Jan 26 2009 p 119 David Esler Oct 27 2016 Honeywell s Super Midsize HTF7000 Engine Business amp Commercial Aviation Aviation Week References editGunston Bill 2006 World Encyclopedia of Aero Engines 5th Edition Phoenix Mill Gloucestershire England UK Sutton Publishing Limited ISBN 0 7509 4479 X Leyes II Richard A William A Fleming 1999 10 The History of North American Small Gas Turbine Aircraft Engines Washington DC Smithsonian Institution ISBN 1 56347 332 1 External links edit nbsp Wikimedia Commons has media related to Honeywell TFE731 Honeywell TFE731 official website Archived 2016 11 19 at the Wayback Machine Retrieved from https en wikipedia org w index php title Garrett TFE731 amp oldid 1136373320, wikipedia, wiki, book, books, library,

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