WO2005100753A1 - Strut comprising a sound-absorbing material for a turbine engine - Google Patents

Strut comprising a sound-absorbing material for a turbine engine Download PDF

Info

Publication number
WO2005100753A1
WO2005100753A1 PCT/DE2005/000564 DE2005000564W WO2005100753A1 WO 2005100753 A1 WO2005100753 A1 WO 2005100753A1 DE 2005000564 W DE2005000564 W DE 2005000564W WO 2005100753 A1 WO2005100753 A1 WO 2005100753A1
Authority
WO
WIPO (PCT)
Prior art keywords
strut
sound
absorbing material
turbine engine
strut according
Prior art date
Application number
PCT/DE2005/000564
Other languages
German (de)
French (fr)
Inventor
Frank Grauer
Martin Metscher
Original Assignee
Mtu Aero Engines Gmbh
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 Mtu Aero Engines Gmbh filed Critical Mtu Aero Engines Gmbh
Publication of WO2005100753A1 publication Critical patent/WO2005100753A1/en

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
    • F01D9/00—Stators
    • F01D9/06—Fluid supply conduits to nozzles or the like
    • F01D9/065—Fluid supply or removal conduits traversing the working fluid flow, e.g. for lubrication-, cooling-, or sealing fluids
    • 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
    • F02C7/045—Air intakes for gas-turbine plants or jet-propulsion plants having provisions for noise suppression
    • 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
    • F05D2260/00—Function
    • F05D2260/96—Preventing, counteracting or reducing vibration or noise
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft

Definitions

  • a sound-repellent layer which has this structure, and a large number of funnels 24 can be provided distributed over the surface, can serve as a sound absorber for a strut according to the invention.
  • the present invention makes it possible to largely absorb the tonal sound outflow, in particular from low-pressure turbines.
  • the sound absorber By integrating the sound absorber into existing components, no additional installation space is required, the application can be carried out almost weight-neutral and aerodynamic losses are kept to a minimum.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Architecture (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

The invention relates to a strut (10) for a turbine engine, which is characterized in that said strut (10) comprises an at least partially sound-absorbing material (14, 16).

Description

Eine schallabweisende Schicht, die diesen Aufbau aufweist, wobei eine Vielzahl von Trichtern 24 über die Fläche verteilt vorgesehen sein können, kann als Schallabsorber für eine erfindungsgemäße Strebe dienen. Es liegt aber auch im Rahmen der Erfindung andere bekannte Schallabsorber einzusetzen.A sound-repellent layer which has this structure, and a large number of funnels 24 can be provided distributed over the surface, can serve as a sound absorber for a strut according to the invention. However, it is also within the scope of the invention to use other known sound absorbers.
Mit der vorliegenden Erfindung wird es möglich, die tonale Schallabströmung, insbesondere von Niederdruckturbinen, weitgehend zu absorbieren. Durch die Integration des Schallabsorbers in ohnehin vorhandene Bauteile wird kein zusätzlicher Bauraum benötigt, die Anwendung kann nahezu gewichtsneutral erfolgen und aerodynamische Verluste werden auf ein Minimum beschränkt . The present invention makes it possible to largely absorb the tonal sound outflow, in particular from low-pressure turbines. By integrating the sound absorber into existing components, no additional installation space is required, the application can be carried out almost weight-neutral and aerodynamic losses are kept to a minimum.

Claims

Patentansprüche claims
1. Strebe (10) für ein Turbinentriebwerk, insbesondere für eine Gasturbine wie ein Flugtriebwerk, dadurch gekennzeichnet, dass die Strebe (10) zumindest teilweise schallabsorbierendes Material (14, 16) umfasst .1. strut (10) for a turbine engine, in particular for a gas turbine such as an aircraft engine, characterized in that the strut (10) comprises at least partially sound-absorbing material (14, 16).
2. Strebe nach Anspruch 1, dadurch gekennzeichnet, dass diese zumindest teilweise mit einer schallabsorbierenden Schicht versehen ist.2. A strut according to claim 1, characterized in that it is at least partially provided with a sound-absorbing layer.
3. Strebe nach Anspruch 1, dadurch gekennzeichnet, dass diese zumindest teilweise aus schallabsorbierendem Material (14, 16) besteht.3. A strut according to claim 1, characterized in that it consists at least partially of sound-absorbing material (14, 16).
4. Strebe nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass diese unterschiedliche schallabsorbierende Materialien (14, 16) umfasst.4. Strut according to one of claims 1 to 3, characterized in that it comprises different sound-absorbing materials (14, 16).
5. Strebe nach Anspruch 4, dadurch gekennzeichnet, dass an gegenüberliegenden Seiten (18, 20) der Strebe (10) unterschiedliche schallabsorbierende Materialien (14, 16) vorgesehen sind.5. A strut according to claim 4, characterized in that different sound-absorbing materials (14, 16) are provided on opposite sides (18, 20) of the strut (10).
6. Strebe nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Bereich der Strebe (10) , über den das schallabsorbierende Material (14, 16) vorgesehen ist, sich über die Länge der Strebe (10) erstreckt.6. Strut according to one of claims 1 to 5, characterized in that the area of the strut (10) over which the sound-absorbing material (14, 16) is provided extends over the length of the strut (10).
7. Strebe nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass diese ein massives Bauteil darstellt.7. Strut according to one of claims 1 to 6, characterized in that it is a solid component.
8. Strebe nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass in dieser Versorgungsleitungen geführt sind.8. strut according to one of claims 1 to 7, characterized in that supply lines are guided in this.
9. Strebe nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass diese einen Strut oder eine Strebe des Austrittsleitgitters darstellt . 9. Strut according to one of claims 1 to 8, characterized in that it represents a strut or a strut of the outlet guide vane.
PCT/DE2005/000564 2004-04-07 2005-03-31 Strut comprising a sound-absorbing material for a turbine engine WO2005100753A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004017096A DE102004017096A1 (en) 2004-04-07 2004-04-07 Strut for a turbine engine
DE102004017096.7 2004-04-07

Publications (1)

Publication Number Publication Date
WO2005100753A1 true WO2005100753A1 (en) 2005-10-27

Family

ID=34966737

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2005/000564 WO2005100753A1 (en) 2004-04-07 2005-03-31 Strut comprising a sound-absorbing material for a turbine engine

Country Status (2)

Country Link
DE (1) DE102004017096A1 (en)
WO (1) WO2005100753A1 (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1831505A1 (en) * 2004-12-23 2007-09-12 Volvo Aero Corporation Static gas turbine component and method for repairing such a component
ITTO20130034A1 (en) * 2013-01-15 2014-07-16 Avio Spa LATEST STATH STONE OF A LOW PRESSURE TURBINE FOR A GAS TURBINE ENGINE
ITTO20130400A1 (en) * 2013-05-17 2014-11-18 Avio Spa LOW PRESSURE TURBINE PROVIDED WITH DISPERSERS IN CORRESPONDENCE WITH THE LATEST STATOR, IN PARTICULAR FOR A GAS TURBINE ENGINE
EP2846030A1 (en) * 2013-08-30 2015-03-11 Airbus Defence and Space GmbH Sound absorber, sound absorber assembly and an engine with a sound absorber assembly
US11199107B2 (en) 2020-04-13 2021-12-14 Raytheon Technologies Corporation Airfoil-mounted resonator
US11230928B1 (en) 2020-07-22 2022-01-25 Raytheon Technologies Corporation Guide vane with truss structure and honeycomb
US11408349B2 (en) 2020-08-14 2022-08-09 Raytheon Technologies Corporation Active flow control transpirational flow acoustically lined guide vane
US11512608B2 (en) 2020-08-14 2022-11-29 Raytheon Technologies Corporation Passive transpirational flow acoustically lined guide vane
US11566564B2 (en) 2020-07-08 2023-01-31 Raytheon Technologies Corporation Acoustically treated panels
US11713686B2 (en) * 2017-05-16 2023-08-01 Oscar Propulsion Ltd. Outlet guide vanes
US11781485B2 (en) 2021-11-24 2023-10-10 Rtx Corporation Unit cell resonator networks for gas turbine combustor tone damping
US11804206B2 (en) 2021-05-12 2023-10-31 Goodrich Corporation Acoustic panel for noise attenuation
US11830467B2 (en) 2021-10-16 2023-11-28 Rtx Coroporation Unit cell resonator networks for turbomachinery bypass flow structures

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202005018803U1 (en) 2005-12-01 2006-03-02 Faist Anlagenbau Gmbh Device for silencing / sound insulation, especially in power plants
US7607287B2 (en) 2007-05-29 2009-10-27 United Technologies Corporation Airfoil acoustic impedance control
DE102010002719A1 (en) * 2010-03-10 2011-09-15 Rolls-Royce Deutschland Ltd & Co Kg Aerodynamically shaped support and / or cladding element in the bypass duct of a gas turbine engine

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2916101A (en) * 1957-02-25 1959-12-08 Israel A Naman Sound-absorbing structures
US3820628A (en) * 1972-10-02 1974-06-28 United Aircraft Corp Sound suppression means for rotating machinery
US3829020A (en) * 1973-06-13 1974-08-13 Boeing Co Translating sleeve variable area nozzle and thrust reverser
DE2333903A1 (en) * 1973-06-29 1975-01-30 Bolt Beranek & Newman Noise reduction for flow systems with gaseous or fluid media - has elements constructed from sheet metal in jet engines
DE2510611A1 (en) * 1975-03-11 1976-09-23 Kraftwerk Union Ag Gas turbine exhaust silencer absorbing low-frequency noise - silencer has perforated plates, rock wool filling and staggered guide vanes
US4235303A (en) * 1978-11-20 1980-11-25 The Boeing Company Combination bulk absorber-honeycomb acoustic panels
EP0298898A2 (en) * 1987-07-09 1989-01-11 United Technologies Corporation Crossed I-beam structural strut
US6139259A (en) * 1998-10-29 2000-10-31 General Electric Company Low noise permeable airfoil
GB2361035A (en) * 2000-04-07 2001-10-10 Rolls Royce Plc Gas turbine engine vane with noise attenuation features

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2916101A (en) * 1957-02-25 1959-12-08 Israel A Naman Sound-absorbing structures
US3820628A (en) * 1972-10-02 1974-06-28 United Aircraft Corp Sound suppression means for rotating machinery
US3829020A (en) * 1973-06-13 1974-08-13 Boeing Co Translating sleeve variable area nozzle and thrust reverser
DE2333903A1 (en) * 1973-06-29 1975-01-30 Bolt Beranek & Newman Noise reduction for flow systems with gaseous or fluid media - has elements constructed from sheet metal in jet engines
DE2510611A1 (en) * 1975-03-11 1976-09-23 Kraftwerk Union Ag Gas turbine exhaust silencer absorbing low-frequency noise - silencer has perforated plates, rock wool filling and staggered guide vanes
US4235303A (en) * 1978-11-20 1980-11-25 The Boeing Company Combination bulk absorber-honeycomb acoustic panels
EP0298898A2 (en) * 1987-07-09 1989-01-11 United Technologies Corporation Crossed I-beam structural strut
US6139259A (en) * 1998-10-29 2000-10-31 General Electric Company Low noise permeable airfoil
GB2361035A (en) * 2000-04-07 2001-10-10 Rolls Royce Plc Gas turbine engine vane with noise attenuation features

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1831505A4 (en) * 2004-12-23 2012-02-22 Volvo Aero Corp Static gas turbine component and method for repairing such a component
EP1831505A1 (en) * 2004-12-23 2007-09-12 Volvo Aero Corporation Static gas turbine component and method for repairing such a component
ITTO20130034A1 (en) * 2013-01-15 2014-07-16 Avio Spa LATEST STATH STONE OF A LOW PRESSURE TURBINE FOR A GAS TURBINE ENGINE
ITTO20130400A1 (en) * 2013-05-17 2014-11-18 Avio Spa LOW PRESSURE TURBINE PROVIDED WITH DISPERSERS IN CORRESPONDENCE WITH THE LATEST STATOR, IN PARTICULAR FOR A GAS TURBINE ENGINE
EP2803823A1 (en) * 2013-05-17 2014-11-19 Ge Avio S.r.l. Low pressure turbine provided with splitters at the last stator array
US9702253B2 (en) 2013-05-17 2017-07-11 Ge Avio S.R.L. Low pressure turbine provided with splitters at the last stator array, in particular for a gas turbine engine
EP2846030A1 (en) * 2013-08-30 2015-03-11 Airbus Defence and Space GmbH Sound absorber, sound absorber assembly and an engine with a sound absorber assembly
US9303588B2 (en) 2013-08-30 2016-04-05 Airbus Defence and Space GmbH Sound absorber, sound absorber assembly and an engine with a sound absorber assembly
US11713686B2 (en) * 2017-05-16 2023-08-01 Oscar Propulsion Ltd. Outlet guide vanes
US11199107B2 (en) 2020-04-13 2021-12-14 Raytheon Technologies Corporation Airfoil-mounted resonator
US11566564B2 (en) 2020-07-08 2023-01-31 Raytheon Technologies Corporation Acoustically treated panels
US11230928B1 (en) 2020-07-22 2022-01-25 Raytheon Technologies Corporation Guide vane with truss structure and honeycomb
US11408349B2 (en) 2020-08-14 2022-08-09 Raytheon Technologies Corporation Active flow control transpirational flow acoustically lined guide vane
US11512608B2 (en) 2020-08-14 2022-11-29 Raytheon Technologies Corporation Passive transpirational flow acoustically lined guide vane
US11804206B2 (en) 2021-05-12 2023-10-31 Goodrich Corporation Acoustic panel for noise attenuation
US11830467B2 (en) 2021-10-16 2023-11-28 Rtx Coroporation Unit cell resonator networks for turbomachinery bypass flow structures
US11781485B2 (en) 2021-11-24 2023-10-10 Rtx Corporation Unit cell resonator networks for gas turbine combustor tone damping

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