IT1245238B - Paletta di turbomotore a gas - Google Patents

Paletta di turbomotore a gas

Info

Publication number
IT1245238B
IT1245238B ITMI910721A ITMI910721A IT1245238B IT 1245238 B IT1245238 B IT 1245238B IT MI910721 A ITMI910721 A IT MI910721A IT MI910721 A ITMI910721 A IT MI910721A IT 1245238 B IT1245238 B IT 1245238B
Authority
IT
Italy
Prior art keywords
stresses
threads
dovetail
cavity
turbo engine
Prior art date
Application number
ITMI910721A
Other languages
English (en)
Inventor
Lori Ellen Matula
Thomas Ames Lindstedt
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Publication of ITMI910721A0 publication Critical patent/ITMI910721A0/it
Publication of ITMI910721A1 publication Critical patent/ITMI910721A1/it
Application granted granted Critical
Publication of IT1245238B publication Critical patent/IT1245238B/it

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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S416/00—Fluid reaction surfaces, i.e. impellers
    • Y10S416/50—Vibration damping features

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Viene descritta una paletta di turbomotore a gas che contiene una coda di rondine avente lobi e filetti di ritegno. Si forniscono mezzi di compressione nella coda di rondine per introdurre presollecitazioni compressive sui filetti allo scopo di ridurre sollecitazioni di trazione sui medesimi filetti dovute a sollecitazioni della paletta come carichi di trazione centrifuga. In una realizzazione esemplificativa, i mezzi di compressione comprendono una cavità nella coda di rondine e un inserto disposto nella medesima in innesto di interferenza per generare sollecitazioni compressive sulla cavità e sui filetti.
ITMI910721A 1990-03-19 1991-03-18 Paletta di turbomotore a gas IT1245238B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/495,066 US5100292A (en) 1990-03-19 1990-03-19 Gas turbine engine blade

Publications (3)

Publication Number Publication Date
ITMI910721A0 ITMI910721A0 (it) 1991-03-18
ITMI910721A1 ITMI910721A1 (it) 1992-09-18
IT1245238B true IT1245238B (it) 1994-09-13

Family

ID=23967123

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI910721A IT1245238B (it) 1990-03-19 1991-03-18 Paletta di turbomotore a gas

Country Status (7)

Country Link
US (1) US5100292A (it)
JP (1) JPH04224202A (it)
CA (1) CA2034374A1 (it)
DE (1) DE4108085A1 (it)
FR (1) FR2659688A1 (it)
GB (1) GB2243193A (it)
IT (1) IT1245238B (it)

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US5314307A (en) * 1992-12-18 1994-05-24 Alliedsignal Inc. Gas turbine test airfoil
US5310312A (en) * 1992-12-18 1994-05-10 Alliedsignal Inc. Gas turbine test airfoil
US5509784A (en) * 1994-07-27 1996-04-23 General Electric Co. Turbine bucket and wheel assembly with integral bucket shroud
DE4430636C2 (de) * 1994-08-29 1997-01-23 Mtu Muenchen Gmbh Einrichtung zur Laufschaufelfixierung und zur Beseitigung von Rotorunwuchten bei axial durchströmten Verdichtern oder Turbinen von Gasturbinentriebwerken
US5522706A (en) * 1994-10-06 1996-06-04 General Electric Company Laser shock peened disks with loading and locking slots for turbomachinery
US6033185A (en) * 1998-09-28 2000-03-07 General Electric Company Stress relieved dovetail
US6901821B2 (en) * 2001-11-20 2005-06-07 United Technologies Corporation Stator damper anti-rotation assembly
GB2406532A (en) * 2003-10-03 2005-04-06 Rolls Royce Plc An apparatus for forming a compressively stressed layer in a root of a blade
EP1752611B1 (en) * 2005-08-12 2008-04-09 Siemens Aktiengesellschaft Turbine for a thermal power plant comprising a locking device
US8210819B2 (en) * 2008-02-22 2012-07-03 Siemens Energy, Inc. Airfoil structure shim
US8894370B2 (en) * 2008-04-04 2014-11-25 General Electric Company Turbine blade retention system and method
US8251667B2 (en) 2009-05-20 2012-08-28 General Electric Company Low stress circumferential dovetail attachment for rotor blades
US10041354B2 (en) * 2011-09-14 2018-08-07 General Electric Company Blade and method for manufacturing blade
US9249669B2 (en) 2012-04-05 2016-02-02 General Electric Company CMC blade with pressurized internal cavity for erosion control
US10408068B2 (en) 2013-03-12 2019-09-10 United Technologies Corporation Fan blade dovetail and spacer
EP2971661B1 (en) * 2013-03-15 2018-05-09 United Technologies Corporation Fan blade lubrication
US9506356B2 (en) * 2013-03-15 2016-11-29 Rolls-Royce North American Technologies, Inc. Composite retention feature
WO2014204542A2 (en) * 2013-04-01 2014-12-24 United Technologies Corporation Lightweight blade for gas turbine engine
FR3018849B1 (fr) * 2014-03-24 2018-03-16 Safran Aircraft Engines Piece de revolution pour un rotor de turbomachine
FR3031136B1 (fr) * 2014-12-26 2019-11-01 Safran Aircraft Engines Rotor de turbomachine a surfaces d'appui optimisees
US10400784B2 (en) * 2015-05-27 2019-09-03 United Technologies Corporation Fan blade attachment root with improved strain response
US20200248563A1 (en) * 2015-10-20 2020-08-06 Sikorsky Aircraft Corporation Aircraft rotor blade insert
KR101892389B1 (ko) * 2017-03-31 2018-08-27 두산중공업 주식회사 회전체 및 이를 포함하는 증기 터빈

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GB190806640A (en) * 1908-03-25 1908-10-15 William Herbert Giblin Ansell Slate Fastener.
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US2751189A (en) * 1950-09-08 1956-06-19 United Aircraft Corp Blade fastening means
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DE1020350B (de) * 1955-03-31 1957-12-05 Escher Wyss Gmbh Befestigung einer aus Blech bestehenden Hohlschaufel fuer axial durchstroemte Turbomaschinen
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Also Published As

Publication number Publication date
ITMI910721A0 (it) 1991-03-18
GB2243193A (en) 1991-10-23
FR2659688A1 (fr) 1991-09-20
CA2034374A1 (en) 1991-09-20
DE4108085A1 (de) 1991-09-26
ITMI910721A1 (it) 1992-09-18
GB9104929D0 (en) 1991-04-24
JPH04224202A (ja) 1992-08-13
US5100292A (en) 1992-03-31

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Legal Events

Date Code Title Description
0001 Granted