JP2015042900A - 衝撃誘起空気流剥離の抑制 - Google Patents
衝撃誘起空気流剥離の抑制 Download PDFInfo
- Publication number
- JP2015042900A JP2015042900A JP2014149881A JP2014149881A JP2015042900A JP 2015042900 A JP2015042900 A JP 2015042900A JP 2014149881 A JP2014149881 A JP 2014149881A JP 2014149881 A JP2014149881 A JP 2014149881A JP 2015042900 A JP2015042900 A JP 2015042900A
- Authority
- JP
- Japan
- Prior art keywords
- actuator
- fluid
- boundary layer
- wall
- array
- 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
Links
- 230000035939 shock Effects 0.000 title claims abstract description 15
- 238000000926 separation method Methods 0.000 title claims abstract description 12
- 230000001629 suppression Effects 0.000 title description 4
- 239000012530 fluid Substances 0.000 claims abstract description 70
- 238000000034 method Methods 0.000 claims description 10
- 238000004299 exfoliation Methods 0.000 claims description 8
- 238000003491 array Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 230000003434 inspiratory effect Effects 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 230000001902 propagating effect Effects 0.000 claims description 4
- 230000006698 induction Effects 0.000 claims 1
- 230000000644 propagated effect Effects 0.000 abstract 1
- 230000032798 delamination Effects 0.000 description 7
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
- F15D1/00—Influencing flow of fluids
- F15D1/0095—Influencing flow of fluids by means of injecting jet pulses of fluid wherein the injected fluid is taken from the fluid and re-injected again, e.g. synthetic jet actuators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C21/00—Influencing air flow over aircraft surfaces by affecting boundary layer flow
- B64C21/02—Influencing air flow over aircraft surfaces by affecting boundary layer flow by use of slot, ducts, porous areas or the like
- B64C21/025—Influencing air flow over aircraft surfaces by affecting boundary layer flow by use of slot, ducts, porous areas or the like for simultaneous blowing and sucking
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D33/00—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for
- B64D33/02—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes
- B64D2033/0226—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes comprising boundary layer control means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D33/00—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for
- B64D33/02—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes
- B64D2033/0253—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes specially adapted for particular type of aircraft
- B64D2033/026—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes specially adapted for particular type of aircraft for supersonic or hypersonic aircraft
-
- 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
- Y02T50/10—Drag reduction
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/0318—Processes
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/0536—Highspeed fluid intake means [e.g., jet engine intake]
Abstract
Description
適用なし
適用なし
Claims (20)
- 壁に沿って流れる流体質量の比較的低エネルギーの境界層からの高速空気流の衝撃誘起剥離を抑制するための装置であって、前記装置が、流体を吸入することと、流体を吐出することとを交互に行うように構成されたアクチュエータを備え、前記アクチュエータが、衝撃誘起境界層剥離気泡から流体を吸入するように配置される、装置。
- 前記アクチュエータが、吐出流体を概ね下流向きの吐出方向に方向付けして前記境界層に戻すように配置される、請求項1に記載の装置。
- 前記アクチュエータが、ゼロ純質量流(ZNMF)アクチュエータである、請求項1に記載の装置。
- 前記装置が、互いに隣接して配設され、かつ、前記流体質量のフロー方向に対して横断方向に前記壁に沿って配列された少なくとも2つのアクチュエータを備えるフェーズドアクチュエータアレイを含み、前記アレイの各アクチュエータが、各アクチュエータの1動作サイクルにおいて、流体を吸入することと、流体を吐出することとを交互に行うように構成され、前記アレイの各アクチュエータが、前記境界層剥離気泡から流体を吸入することと、流体を前記境界層に吐出することとを交互に行うように配置され、各アクチュエータの前記サイクルが、前記アレイの少なくとも1つの他のアクチュエータよりも前に行われ、前記アレイの少なくとも1つの他のアクチュエータよりも後に行われるように前記アクチュエータの前記動作サイクルを互いに位相配置される、請求項2に記載の装置。
- 各アクチュエータは、その動作サイクルの吸気部分中、流体を下流に方向付けするよりも、流体を引き込むのに多くの時間がかかるように、吐出部分と比べて速度を下げることができる、請求項4に記載の装置。
- 前記装置は、互いに隣接して配設され、かつ、前記流体質量が流れているときに前記壁に沿って前記境界層剥離気泡が生じるそれぞれ対応するロケーションに前記流体質量のフロー方向に対して横断方向に前記壁に沿って分散している複数のフェーズドアクチュエータアレイを含む、請求項4に記載の装置。
- 前記壁が、エンジン吸気口の概ね連続的な内部壁であり、前記複数のフェーズドアクチュエータアレイが、前記エンジン吸気口の前記概ね連続的な内部壁の周りに分散している、請求項6に記載の装置。
- 前記壁が、軸対称混合圧縮吸気口の概ね連続的な内部壁である、請求項7に記載の装置。
- 前記壁が、非軸対称混合圧縮吸気口の概ね連続的な内部壁である、請求項7に記載の装置。
- 前記フェーズドアクチュエータアレイの前記アクチュエータが、前記壁の下流に面した段を通して、境界層流体を吸入し、吐出するように配置され、配向される、請求項4に記載の装置。
- 前記フェーズドアクチュエータアレイの前記アクチュエータが、凹型壁ポートを通して、境界層流体を吸入し、吐出するように配置され、配向される、請求項4に記載の装置。
- 壁に沿って流れる流体質量中で伝搬される超音速衝撃波により前記壁に沿って誘起された境界層剥離気泡から流体を引き込むことによって、比較的低エネルギーの境界層からの高速空気流の衝撃誘起剥離を抑制するための方法。
- 概ね下流向きの吐出方向に流体を方向付けして前記境界層に戻す追加ステップを含む、請求項12に記載の方法。
- 前記引き込むステップと前記方向付けするステップとを交互に行う追加ステップを含む、請求項13に記載の方法。
- 境界層剥離気泡から流体を引き込む前記ステップが、ZNMFアクチュエータに、前記ZNMFアクチュエータの動作サイクルの吸気部分中に、前記境界層剥離気泡から流体を吸入させることを含む、請求項12に記載の方法。
- 流体を方向付けして前記境界層に戻す前記ステップが、前記ZNMFアクチュエータに、前記ZNMFアクチュエータの前記動作サイクルの吐出部分中に、流体を概ね下流向きの吐出方向に方向付けさせて前記境界層に戻すことを含む、請求項13に記載の方法。
- 前記交互に行うステップが、前記ZNMFアクチュエータに、前記境界層から流体を吸入することと、流体を前記境界層に吐出することとを交互に行わせることを含む、請求項14に記載の方法。
- 前記引き込むステップ、前記方向付けするステップおよび前記交互に行うステップが、少なくとも2つのZNMFアクチュエータの各々に、前記アクチュエータのそれぞれ対応する動作サイクル中に、前記境界層から流体を吸入することと、流体を前記境界層に吐出することを交互に行わせることを含み、各アクチュエータの前記サイクルが、前記アレイの少なくとも1つの他のアクチュエータよりも前に行われ、前記アレイの少なくとも1つの他のアクチュエータよりも後に行われるように、前記アクチュエータの前記動作サイクルを互いに位相配置させる、請求項17に記載の方法。
- 前記引き込むステップと前記方向付けするステップとを交互に行う前記ステップは、前記引き込むステップおよび前記方向付けするステップのうちの一方が他方よりも多くの完了時間がかかるように、前記引き込むステップおよび前記方向付けするステップのうちの1つ中に、前記アクチュエータの速度を下げる、または上げる追加ステップを含む、請求項14に記載の方法。
- 前記引き込むステップと前記方向付けするステップとを交互に行う前記ステップが、前記引き込むステップが前記方向付けするステップよりも多くの完了時間がかかるように、前記引き込むステップの速度を下げること、また前記方向付けするステップの速度を上げることを含む、請求項19に記載の方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/952,088 | 2013-07-26 | ||
US13/952,088 US10054048B2 (en) | 2013-07-26 | 2013-07-26 | Suprression of shock-induced airflow separation |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2015042900A true JP2015042900A (ja) | 2015-03-05 |
JP6422253B2 JP6422253B2 (ja) | 2018-11-14 |
Family
ID=51220440
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2014149881A Active JP6422253B2 (ja) | 2013-07-26 | 2014-07-23 | 衝撃誘起空気流剥離の抑制 |
Country Status (3)
Country | Link |
---|---|
US (1) | US10054048B2 (ja) |
EP (1) | EP2843244B1 (ja) |
JP (1) | JP6422253B2 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017189474A1 (en) | 2016-04-25 | 2017-11-02 | Rensselaer Polytechnic Institute | Methods and apparatus for controlling flow fields |
US11542866B2 (en) * | 2020-05-13 | 2023-01-03 | The Boeing Company | Adaptable flow control for engine nacelles |
CN112572810A (zh) * | 2020-11-25 | 2021-03-30 | 北京空天技术研究所 | 一种进气道边界层分离消除装置及飞行器 |
CN115559814B (zh) * | 2022-10-31 | 2023-06-20 | 南京航空航天大学 | 一种边界层吸入式进气道及内流控制装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4664345A (en) * | 1983-11-24 | 1987-05-12 | Messerschmitt-Boelkow-Blohm Gesellschaft Mit Beschrankter Haftung | Method for stabilizing laminar separated boundary layers |
US5542630A (en) * | 1992-03-31 | 1996-08-06 | Rolls-Royce Plc | Control of fluid flow |
US5743488A (en) * | 1994-12-05 | 1998-04-28 | Short Brothers Plc | Aerodynamic low drag structure |
US20060032988A1 (en) * | 2004-08-14 | 2006-02-16 | Rolls-Royce Plc | Boundary layer control arrangement |
US20090060704A1 (en) * | 2007-09-05 | 2009-03-05 | Wayne Hurwitz | Active flow control for nacelle inlet |
Family Cites Families (51)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2841344A (en) * | 1955-11-28 | 1958-07-01 | Stroukoff Michael | Boundary layer control |
NL243195A (ja) * | 1958-09-10 | 1900-01-01 | ||
US3417767A (en) * | 1966-06-13 | 1968-12-24 | North American Rockwell | Self-restarting supersonic inlet |
US4000869A (en) * | 1975-10-21 | 1977-01-04 | Northrop Corporation | Strong shock boundary layer interaction control system |
US4534702A (en) * | 1983-12-27 | 1985-08-13 | United Technologies Corporation | Pneumatic control valve actuator computer control arrangement |
US4802642A (en) * | 1986-10-14 | 1989-02-07 | The Boeing Company | Control of laminar flow in fluids by means of acoustic energy |
US5447283A (en) * | 1994-02-02 | 1995-09-05 | Grumman Aerospace Corporation | Blown boundary layer control system for a jet aircraft |
US6457654B1 (en) * | 1995-06-12 | 2002-10-01 | Georgia Tech Research Corporation | Micromachined synthetic jet actuators and applications thereof |
US5938404A (en) * | 1997-06-05 | 1999-08-17 | Mcdonnell Douglas Helicopter Company | Oscillating air jets on aerodynamic surfaces |
US6092990A (en) * | 1997-06-05 | 2000-07-25 | Mcdonnell Douglas Helicopter Company | Oscillating air jets for helicopter rotor aerodynamic control and BVI noise reduction |
US6234751B1 (en) * | 1997-06-05 | 2001-05-22 | Mcdonnell Douglas Helicopter Co. | Oscillating air jets for reducing HSI noise |
US6371414B1 (en) * | 1999-07-16 | 2002-04-16 | Lockheed Martin Corporation | System and method for manipulating and controlling fluid flow over a surface |
US6793175B1 (en) * | 1999-08-25 | 2004-09-21 | The Boeing Company | Supersonic external-compression diffuser and method for designing same |
US6375118B1 (en) * | 2000-08-30 | 2002-04-23 | The Boeing Company | High frequency excitation apparatus and method for reducing jet and cavity noise |
US7048229B2 (en) * | 2000-09-26 | 2006-05-23 | Techland Research, Inc. | Low sonic boom inlet for supersonic aircraft |
US6471477B2 (en) * | 2000-12-22 | 2002-10-29 | The Boeing Company | Jet actuators for aerodynamic surfaces |
US7104498B2 (en) * | 2003-06-13 | 2006-09-12 | Georgia Tech Research Corp. | Channel-wing system for thrust deflection and force/moment generation |
US6994297B1 (en) * | 2004-10-27 | 2006-02-07 | The Boeing Company | Method and apparatus for controlling a vehicle |
EP1960306A4 (en) * | 2005-11-22 | 2014-04-02 | Mycrolab Diagnostics Pty Ltd | MICROFLUIDIC STRUCTURES |
US8136767B2 (en) * | 2006-01-03 | 2012-03-20 | General Electric Company | Method and system for flow control with arrays of dual bimorph synthetic jet fluidic actuators |
US7296395B1 (en) | 2006-12-19 | 2007-11-20 | The Boeing Company | Engine inlet air particle separator with active flow control |
US20080149205A1 (en) * | 2006-12-20 | 2008-06-26 | General Electric Company | System and method for reducing wake |
CN101970111B (zh) * | 2007-06-21 | 2013-09-11 | 简·探针公司 | 用于执行处理的仪器和容器 |
US9004399B2 (en) * | 2007-11-13 | 2015-04-14 | United Technologies Corporation | Nacelle flow assembly |
US7750491B2 (en) * | 2007-11-21 | 2010-07-06 | Ric Enterprises | Fluid-dynamic renewable energy harvesting system |
US8192147B2 (en) * | 2007-12-14 | 2012-06-05 | United Technologies Corporation | Nacelle assembly having inlet bleed |
US8186942B2 (en) * | 2007-12-14 | 2012-05-29 | United Technologies Corporation | Nacelle assembly with turbulators |
US8220753B2 (en) * | 2008-01-04 | 2012-07-17 | The Boeing Company | Systems and methods for controlling flows with pulsed discharges |
US8052069B2 (en) | 2008-08-25 | 2011-11-08 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Advanced high performance vertical hybrid synthetic jet actuator |
US8006917B2 (en) * | 2008-08-26 | 2011-08-30 | General Electric Company | Method and apparatus for reducing acoustic noise in a synthetic jet |
US8931518B2 (en) * | 2008-09-23 | 2015-01-13 | The Boeing Company | Shaping a fluid cavity of a flow control actuator for creation of desired waveform characteristics |
US20100140416A1 (en) * | 2008-11-03 | 2010-06-10 | Ohanian Iii Osgar John | Ducted Fans with Flow Control Synthetic Jet Actuators and Methods for Ducted Fan Force and Moment Control |
CN102341691A (zh) * | 2008-12-31 | 2012-02-01 | 尹特根埃克斯有限公司 | 具有微流体芯片的仪器 |
EP2272753B1 (en) | 2009-07-06 | 2013-02-27 | EADS Deutschland GmbH | Gas flow control device |
US8382043B1 (en) * | 2009-08-17 | 2013-02-26 | Surya Raghu | Method and apparatus for aerodynamic flow control using compact high-frequency fluidic actuator arrays |
DE102009057405A1 (de) * | 2009-12-08 | 2011-06-09 | Airbus Operations Gmbh | Flugzeug mit einer Anordnung von Strömungsbeeinflussungs-Vorrichtungen |
WO2011077424A1 (en) * | 2009-12-21 | 2011-06-30 | Ramot At Tel-Aviv University Ltd. | Oscillatory vorticity generator and applications thereof |
US8348200B2 (en) * | 2009-12-23 | 2013-01-08 | Lockheed Martin Corporation | Synthetic jet actuator system and related methods |
FR2955609B1 (fr) * | 2010-01-26 | 2012-04-27 | Snecma | Aube composite a canaux internes |
EP2542810B1 (en) * | 2010-03-05 | 2015-04-15 | Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V. | Method for manufacturing a micro pump and micro pump |
DE102010026162A1 (de) * | 2010-07-06 | 2012-01-12 | Airbus Operations Gmbh | Flugzeug mit Tragflügeln und einem System zur Minimierung des Einflusses von instationären Anströmzuständen |
GB201011854D0 (en) * | 2010-07-14 | 2010-09-01 | Isis Innovation | Vane assembly for an axial flow turbine |
US8234869B2 (en) * | 2010-08-09 | 2012-08-07 | Yen Tuan | Aviation engine inlet with tangential blowing for buzz saw noise control |
US8316631B2 (en) * | 2010-09-30 | 2012-11-27 | Lockheed Martin Corporation | Exhaust plume heat effect reducing method and apparatus |
GB201020410D0 (en) * | 2010-12-01 | 2011-03-30 | Mbda Uk Ltd | An air intake system for an air vehicle |
US8267653B2 (en) | 2010-12-21 | 2012-09-18 | General Electric Company | System and method of operating an active flow control system to manipulate a boundary layer across a rotor blade of a wind turbine |
US8523115B2 (en) * | 2011-01-28 | 2013-09-03 | Lockheed Martin Corporation | System, apparatus, program product, and related methods for providing boundary layer flow control |
GB201121889D0 (en) * | 2011-12-20 | 2012-02-01 | Rolls Royce Plc | Active flow control intake for a gas turbine engine |
JP6238393B2 (ja) * | 2013-01-17 | 2017-11-29 | 国立研究開発法人宇宙航空研究開発機構 | 超音速インテークの作動安定化方法および作動安定化装置 |
US9458825B2 (en) * | 2013-03-15 | 2016-10-04 | Frontier Wind, Llc | Actuation mechanisms for load management devices on aerodynamic blades |
US10033314B2 (en) * | 2013-05-29 | 2018-07-24 | Magnelan Technologies Inc. | Modified Halbach array generator |
-
2013
- 2013-07-26 US US13/952,088 patent/US10054048B2/en active Active
-
2014
- 2014-07-22 EP EP14178046.0A patent/EP2843244B1/en active Active
- 2014-07-23 JP JP2014149881A patent/JP6422253B2/ja active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4664345A (en) * | 1983-11-24 | 1987-05-12 | Messerschmitt-Boelkow-Blohm Gesellschaft Mit Beschrankter Haftung | Method for stabilizing laminar separated boundary layers |
US5542630A (en) * | 1992-03-31 | 1996-08-06 | Rolls-Royce Plc | Control of fluid flow |
US5743488A (en) * | 1994-12-05 | 1998-04-28 | Short Brothers Plc | Aerodynamic low drag structure |
US20060032988A1 (en) * | 2004-08-14 | 2006-02-16 | Rolls-Royce Plc | Boundary layer control arrangement |
US20090060704A1 (en) * | 2007-09-05 | 2009-03-05 | Wayne Hurwitz | Active flow control for nacelle inlet |
Also Published As
Publication number | Publication date |
---|---|
US20150027545A1 (en) | 2015-01-29 |
EP2843244A2 (en) | 2015-03-04 |
EP2843244B1 (en) | 2020-11-25 |
EP2843244A3 (en) | 2015-07-29 |
US10054048B2 (en) | 2018-08-21 |
JP6422253B2 (ja) | 2018-11-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6422253B2 (ja) | 衝撃誘起空気流剥離の抑制 | |
JP4718815B2 (ja) | ジェットエンジン騒音の低減方法及びシステム | |
JP5403157B2 (ja) | 流体用制振ブレード | |
JP6063246B2 (ja) | 小型高圧排気消音装置 | |
EP2017826A2 (en) | An acoustic panel | |
JP2014502700A (ja) | バイパスターボジェット | |
CN107741313A (zh) | 一种低扰动宽马赫数风洞层流双喷管 | |
CN207923408U (zh) | 一种低扰动宽马赫数风洞层流双喷管 | |
JP5195488B2 (ja) | 電動送風機およびそれを用いた電気掃除機 | |
JP2016041917A (ja) | 消音器 | |
CN103926050B (zh) | 高超声速静音喷管及其确定方法 | |
JP2016014523A (ja) | ガスタービン用のダンパ | |
CN112620058A (zh) | 一种带拉瓦尔喷管的哈特曼声波发生器 | |
CN207064338U (zh) | 一种高速线材轧制控冷风机消音装置 | |
JP5816633B2 (ja) | ガスタービンエンジンからガスを排出する装置及びガスタービンエンジン | |
CN102777261B (zh) | 进气风门用基板以及包括该基板的进气风门 | |
US8640820B2 (en) | High-speed jet noise reduction via fluidic injection | |
JP6413195B2 (ja) | 風洞装置 | |
JP2015521556A (ja) | 共鳴筒を用いた船舶プロペラ用防音ダクト | |
CN203655721U (zh) | 飞机风扇出口噪声消声器 | |
JP5379148B2 (ja) | 乱流エアジェット内の渦構造を制御する装置と方法 | |
CN104008748B (zh) | 一种梭型片式消声器 | |
CN207673628U (zh) | 一种管道风机用降噪装置 | |
Brown et al. | Effects of Cavity Diameter on Acoustic Impedance of Perforate-Over-Honeycomb Liners | |
Panickar et al. | New vortex generator design for nozzle internal modification |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20170704 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20180828 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20180925 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20181009 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20181016 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6422253 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |