EP1564377A3 - Rotor blade and rotor disc for a gas turbine engine with a reduced coefficient of friction at the blade and disc interface - Google Patents

Rotor blade and rotor disc for a gas turbine engine with a reduced coefficient of friction at the blade and disc interface Download PDF

Info

Publication number
EP1564377A3
EP1564377A3 EP05250384A EP05250384A EP1564377A3 EP 1564377 A3 EP1564377 A3 EP 1564377A3 EP 05250384 A EP05250384 A EP 05250384A EP 05250384 A EP05250384 A EP 05250384A EP 1564377 A3 EP1564377 A3 EP 1564377A3
Authority
EP
European Patent Office
Prior art keywords
blade
rotor
disc
friction
bearing surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP05250384A
Other languages
German (de)
French (fr)
Other versions
EP1564377A2 (en
EP1564377B1 (en
Inventor
Keith Christopher Goldfinch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rolls Royce PLC
Original Assignee
Rolls Royce PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rolls Royce PLC filed Critical Rolls Royce PLC
Publication of EP1564377A2 publication Critical patent/EP1564377A2/en
Publication of EP1564377A3 publication Critical patent/EP1564377A3/en
Application granted granted Critical
Publication of EP1564377B1 publication Critical patent/EP1564377B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
    • F01D5/3092—Protective layers between blade root and rotor disc surfaces, e.g. anti-friction layers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/34—Blade mountings

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

A rotor blade, a rotor disc (24) or load bearing assembly having at least one bearing surface (22) for contact with a corresponding bearing surface (28). At least one selected area of the bearing surface (30,32) which, in operation, is an area of alternating stress greater than about 50 MPa (peak to peak), is configured to have a co-efficient of friction lower than the remainder of the bearing surface (34). The selected area (30,32) having a co-efficient of friction lower than the remainder of the bearing surface (34) may be provided by the application of a dry film lubricant, with the remaining area(s) (34) of said bearing surfaces (22) being substantially free of the said coating.
EP05250384A 2004-02-12 2005-01-26 Rotor blade and rotor disc for a gas turbine engine with a reduced coefficient of friction at the blade and disc interface Expired - Lifetime EP1564377B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0403064.9A GB0403064D0 (en) 2004-02-12 2004-02-12 Gas turbine engine rotor blade, rotor disc and bladed disc assembly, and a bearing arrangement for reducing the effects of dynamic contact stresses
GB0403064 2004-02-12

Publications (3)

Publication Number Publication Date
EP1564377A2 EP1564377A2 (en) 2005-08-17
EP1564377A3 true EP1564377A3 (en) 2006-11-08
EP1564377B1 EP1564377B1 (en) 2010-04-07

Family

ID=32011750

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05250384A Expired - Lifetime EP1564377B1 (en) 2004-02-12 2005-01-26 Rotor blade and rotor disc for a gas turbine engine with a reduced coefficient of friction at the blade and disc interface

Country Status (3)

Country Link
EP (1) EP1564377B1 (en)
DE (1) DE602005020379D1 (en)
GB (2) GB0403064D0 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7217099B2 (en) * 2005-05-24 2007-05-15 General Electric Company Coated forward stub shaft dovetail slot
US20160003067A1 (en) * 2013-03-07 2016-01-07 United Technologies Corporation Aluminum Fan Blades with Root Wear Mitigation
US12012870B1 (en) * 2022-11-29 2024-06-18 Rtx Corporation Machinable coating for CMC and metal interface in a turbine section

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3809495A (en) * 1973-03-27 1974-05-07 Westinghouse Electric Corp Turbine rotor having cushioned support surfaces for ceramic blades mounted thereon
US4169694A (en) * 1977-07-20 1979-10-02 Electric Power Research Institute, Inc. Ceramic rotor blade having root with double curvature
EP0496503A1 (en) * 1991-01-15 1992-07-29 General Electric Company Curable dry film lubricant for titanium alloys
US5264295A (en) * 1990-08-03 1993-11-23 Ngk Spark Plug Co., Ltd. Combined body of ceramics and metal
US5846054A (en) * 1994-10-06 1998-12-08 General Electric Company Laser shock peened dovetails for disks and blades

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5435872A (en) * 1991-11-01 1995-07-25 Decc Technology Partnership Sized coated pistons
US5573377A (en) * 1995-04-21 1996-11-12 General Electric Company Assembly of a composite blade root and a rotor
DE10326719A1 (en) * 2003-06-06 2004-12-23 Rolls-Royce Deutschland Ltd & Co Kg Compressor blade base for engine blades of aircraft engines

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3809495A (en) * 1973-03-27 1974-05-07 Westinghouse Electric Corp Turbine rotor having cushioned support surfaces for ceramic blades mounted thereon
US4169694A (en) * 1977-07-20 1979-10-02 Electric Power Research Institute, Inc. Ceramic rotor blade having root with double curvature
US5264295A (en) * 1990-08-03 1993-11-23 Ngk Spark Plug Co., Ltd. Combined body of ceramics and metal
EP0496503A1 (en) * 1991-01-15 1992-07-29 General Electric Company Curable dry film lubricant for titanium alloys
US5846054A (en) * 1994-10-06 1998-12-08 General Electric Company Laser shock peened dovetails for disks and blades

Also Published As

Publication number Publication date
GB0403064D0 (en) 2004-03-17
GB2411210B (en) 2008-07-16
DE602005020379D1 (en) 2010-05-20
EP1564377A2 (en) 2005-08-17
GB2411210A (en) 2005-08-24
EP1564377B1 (en) 2010-04-07
GB0501610D0 (en) 2005-03-02

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