EP2573322A3 - Fan blade - Google Patents

Fan blade Download PDF

Info

Publication number
EP2573322A3
EP2573322A3 EP20120185422 EP12185422A EP2573322A3 EP 2573322 A3 EP2573322 A3 EP 2573322A3 EP 20120185422 EP20120185422 EP 20120185422 EP 12185422 A EP12185422 A EP 12185422A EP 2573322 A3 EP2573322 A3 EP 2573322A3
Authority
EP
European Patent Office
Prior art keywords
fan blade
ribs
main body
dovetail
channels
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
EP20120185422
Other languages
German (de)
French (fr)
Other versions
EP2573322A2 (en
EP2573322B1 (en
Inventor
Christopher S. McKaveney
Letain Wang
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.)
RTX Corp
Original Assignee
United Technologies Corp
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 United Technologies Corp filed Critical United Technologies Corp
Publication of EP2573322A2 publication Critical patent/EP2573322A2/en
Publication of EP2573322A3 publication Critical patent/EP2573322A3/en
Application granted granted Critical
Publication of EP2573322B1 publication Critical patent/EP2573322B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • F01D5/147—Construction, i.e. structural features, e.g. of weight-saving hollow blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00—Application
    • F05D2220/30—Application in turbines
    • F05D2220/36—Application in turbines specially adapted for the fan of turbofan engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/10—Two-dimensional
    • F05D2250/13—Two-dimensional trapezoidal

Landscapes

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

Abstract

A fan blade (20) has a main body (28) extending between a leading edge (21) and a trailing edge (22). Channels (30) are formed into the main body (28) from at least one open side. A plurality of ribs (28) extend across the main body (28) intermediate the channels (30). The fan blade (20) has a dovetail (24) and an airfoil (18) extending radially outwardly from the dovetail (24). The ribs (26) have a thickness defined as measured generally from the leading edge (21) toward the trailing edge (22). A thickness of at least one of the ribs (26) is generally thicker adjacent radially inner ends (42) and becomes thinner moving in a radially outward direction.
EP12185422.8A 2011-09-23 2012-09-21 Fan blade Active EP2573322B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13/241,756 US20130078103A1 (en) 2011-09-23 2011-09-23 Hollow fan blade rib geometry

Publications (3)

Publication Number Publication Date
EP2573322A2 EP2573322A2 (en) 2013-03-27
EP2573322A3 true EP2573322A3 (en) 2015-05-20
EP2573322B1 EP2573322B1 (en) 2020-04-29

Family

ID=47008323

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12185422.8A Active EP2573322B1 (en) 2011-09-23 2012-09-21 Fan blade

Country Status (2)

Country Link
US (1) US20130078103A1 (en)
EP (1) EP2573322B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015122947A2 (en) 2013-12-06 2015-08-20 United Technologies Corporation Aluminum alloy airfoil with designed crystallographic texture
US11867084B1 (en) 2022-12-20 2024-01-09 Rtx Corporation Hollow airfoil construction using cover subassembly

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0731874A1 (en) * 1994-02-22 1996-09-18 United Technologies Corporation Hollow fan blade dovetail
EP0924380A2 (en) * 1997-12-22 1999-06-23 General Electric Company Striated turbomachine blade
EP0926312A2 (en) * 1997-12-24 1999-06-30 General Electric Company Damped turbomachine blade
US6033186A (en) * 1999-04-16 2000-03-07 General Electric Company Frequency tuned hybrid blade
EP1152123A2 (en) * 2000-05-05 2001-11-07 General Electric Company Hybrid blade with submerged ribs
EP1439281A2 (en) * 2003-01-18 2004-07-21 Rolls-Royce Deutschland Ltd & Co KG Gas turbine engine blade
EP2014386A1 (en) * 2007-07-13 2009-01-14 Rolls-Royce plc A component with a damping filler
EP2239083A1 (en) * 2009-03-31 2010-10-13 United Technologies Corporation Internally supported airfoil and method for internally supporting a hollow airfoil during manufacturing.
EP2500263A2 (en) * 2011-03-17 2012-09-19 United Technologies Corporation Improved retention for bonded hollow fan blade cover

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0731874A1 (en) * 1994-02-22 1996-09-18 United Technologies Corporation Hollow fan blade dovetail
EP0924380A2 (en) * 1997-12-22 1999-06-23 General Electric Company Striated turbomachine blade
EP0926312A2 (en) * 1997-12-24 1999-06-30 General Electric Company Damped turbomachine blade
US6033186A (en) * 1999-04-16 2000-03-07 General Electric Company Frequency tuned hybrid blade
EP1152123A2 (en) * 2000-05-05 2001-11-07 General Electric Company Hybrid blade with submerged ribs
EP1439281A2 (en) * 2003-01-18 2004-07-21 Rolls-Royce Deutschland Ltd & Co KG Gas turbine engine blade
EP2014386A1 (en) * 2007-07-13 2009-01-14 Rolls-Royce plc A component with a damping filler
EP2239083A1 (en) * 2009-03-31 2010-10-13 United Technologies Corporation Internally supported airfoil and method for internally supporting a hollow airfoil during manufacturing.
EP2500263A2 (en) * 2011-03-17 2012-09-19 United Technologies Corporation Improved retention for bonded hollow fan blade cover

Also Published As

Publication number Publication date
EP2573322A2 (en) 2013-03-27
US20130078103A1 (en) 2013-03-28
EP2573322B1 (en) 2020-04-29

Similar Documents

Publication Publication Date Title
EP2378079A3 (en) Composite leading edge sheath and dovetail root undercut
EP2325495A3 (en) Compressor wheel
EP2599962A3 (en) Detuned vane airfoil assembly
EP2589752A3 (en) Non Axis-Symmetric Stator Vane Endwall Contour
EP2369135A3 (en) Blade outer air seal for a gas turbine engine and corresponding gas turbine engine
EP2589781A3 (en) Hollow fan blade tuning using distinct filler materials
WO2014070279A3 (en) Endwall contouring
EP2607231A3 (en) Airfoils including tip profile for noise reduction and method for fabricating same
EP2236749A3 (en) Rotor blade with cooling groove at the tip
EP3070266A3 (en) Turbofan arrangement with blade channel variations
EP2441920A3 (en) Turbine rotor assembly
EP2738392A3 (en) Fan blade for a turbofan gas turbine engine
MX2015007545A (en) Compressor blade for gas turbine engine.
EP2348192A3 (en) Fan airfoil sheath
EP2540974A3 (en) Fan blade with sheath
EP1887187A3 (en) Rotor blade
EP2775097A3 (en) Stator vane row
EP2667019A3 (en) Trailing edge tape
WO2014021981A3 (en) Vortex generators for improved film effectiveness
EP2612991A3 (en) Gas turbine nozzle with a flow groove
EP2562355A3 (en) Coupled blade platforms and methods of sealing
WO2013130181A3 (en) Low loss airfoil platform trailing edge
EP2508423A3 (en) Aerofoil
EP2500263A3 (en) Improved retention for bonded hollow fan blade cover
EP2535569A3 (en) A wind turbine blade

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RIC1 Information provided on ipc code assigned before grant

Ipc: F01D 5/14 20060101AFI20150416BHEP

Ipc: F01D 5/16 20060101ALI20150416BHEP

17P Request for examination filed

Effective date: 20151120

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: UNITED TECHNOLOGIES CORPORATION

RIC1 Information provided on ipc code assigned before grant

Ipc: F01D 5/14 20060101AFI20190703BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20190813

RIN1 Information on inventor provided before grant (corrected)

Inventor name: WANG, LETAIN

Inventor name: MCKAVENEY, CHRISTOPHER S.

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1263596

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200515

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602012069636

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20200429

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200829

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200831

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200730

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200729

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1263596

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200429

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200729

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602012069636

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: RAYTHEON TECHNOLOGIES CORPORATION

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602012069636

Country of ref document: DE

26N No opposition filed

Effective date: 20210201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20200921

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20200930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200921

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210401

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200930

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200930

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200930

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200921

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200921

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429