CH581270A5 - - Google Patents
Info
- Publication number
- CH581270A5 CH581270A5 CH931273A CH931273A CH581270A5 CH 581270 A5 CH581270 A5 CH 581270A5 CH 931273 A CH931273 A CH 931273A CH 931273 A CH931273 A CH 931273A CH 581270 A5 CH581270 A5 CH 581270A5
- Authority
- CH
- Switzerland
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C21/00—Influencing air flow over aircraft surfaces by affecting boundary layer flow
- B64C21/10—Influencing air flow over aircraft surfaces by affecting boundary layer flow using other surface properties, e.g. roughness
-
- 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
- F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
- F01D5/282—Selecting composite materials, e.g. blades with reinforcing filaments
-
- 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
- F04D29/38—Blades
- F04D29/388—Blades characterised by construction
-
- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/161—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general in systems with fluid flow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C2230/00—Boundary layer controls
- B64C2230/20—Boundary layer controls by passively inducing fluid flow, e.g. by means of a pressure difference between both ends of a slot or duct
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C2230/00—Boundary layer controls
- B64C2230/22—Boundary layer controls by using a surface having multiple apertures of relatively small openings other than slots
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C2230/00—Boundary layer controls
- B64C2230/28—Boundary layer controls at propeller or rotor blades
-
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Composite Materials (AREA)
- Fluid Mechanics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US22122372A | 1972-01-27 | 1972-01-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH581270A5 true CH581270A5 (cg-RX-API-DMAC10.html) | 1976-10-29 |
Family
ID=22826905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH931273A CH581270A5 (cg-RX-API-DMAC10.html) | 1972-01-27 | 1973-06-26 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US3779338A (cg-RX-API-DMAC10.html) |
| CH (1) | CH581270A5 (cg-RX-API-DMAC10.html) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0237976A3 (de) * | 1986-03-19 | 1989-03-01 | Alcatel SEL Aktiengesellschaft | Axiallüfter |
Families Citing this family (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1036993B (it) * | 1974-07-02 | 1979-10-30 | Rotron Inc | Dispositivo per il movimento di un fluido |
| DE3221465C2 (de) * | 1981-06-15 | 1986-10-09 | The Garrett Corp., Los Angeles, Calif. | Eintrittsleitbeschaufelung |
| US4534526A (en) * | 1982-12-27 | 1985-08-13 | United Technologies Corporation | Cabin noise suppression in propeller driven aircraft |
| GB8829792D0 (en) * | 1988-12-21 | 1989-07-05 | Marconi Co Ltd | Noise reduction method |
| JPH04272499A (ja) * | 1991-02-27 | 1992-09-29 | Matsushita Electric Ind Co Ltd | 送風機およびその羽根車の製造方法 |
| US5437419A (en) * | 1992-11-06 | 1995-08-01 | The United States Of America As Represented By The United States National Aeronautics And Space Administration | Rotorcraft blade-vortex interaction controller |
| US5634771A (en) * | 1995-09-25 | 1997-06-03 | General Electric Company | Partially-metallic blade for a gas turbine |
| US5823467A (en) * | 1997-04-01 | 1998-10-20 | Mcdonnell Douglas Corp | Passive damping wedge |
| US5839882A (en) * | 1997-04-25 | 1998-11-24 | General Electric Company | Gas turbine blade having areas of different densities |
| US5931641A (en) * | 1997-04-25 | 1999-08-03 | General Electric Company | Steam turbine blade having areas of different densities |
| GB2355288B (en) * | 1999-10-12 | 2003-10-01 | Rolls Royce Plc | Improved turbine blade and manufacture thereof |
| DK174319B1 (da) * | 2000-06-20 | 2002-12-02 | Lm Glasfiber As | Vindmøllevinge med støjdæmpningsmidler |
| US7198062B2 (en) * | 2002-11-21 | 2007-04-03 | The Boeing Company | Fluid control valve |
| US7901189B2 (en) | 2007-05-14 | 2011-03-08 | General Electric Company | Wind-turbine blade and method for reducing noise in wind turbine |
| US8425191B2 (en) * | 2008-05-30 | 2013-04-23 | United Technologies Corporation | Propfan assembly |
| US20100143151A1 (en) * | 2009-02-06 | 2010-06-10 | General Electric Company | Permeable acoustic flap for wind turbine blades |
| US20110211952A1 (en) * | 2011-02-10 | 2011-09-01 | General Electric Company | Rotor blade for wind turbine |
| US9132909B1 (en) * | 2011-03-11 | 2015-09-15 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Flap edge noise reduction fins |
| US8708272B1 (en) | 2011-03-11 | 2014-04-29 | The United States Of America As Represented By The Administrator Of National Aeronautics And Space Administration | Landing gear door liners for airframe noise reduction |
| US9227719B2 (en) * | 2011-03-11 | 2016-01-05 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Reactive orthotropic lattice diffuser for noise reduction |
| US8840451B2 (en) * | 2012-01-24 | 2014-09-23 | Honeywell International Inc. | Cabin pressure outflow valve with simplified whistle eliminator |
| CN107614379A (zh) * | 2015-05-25 | 2018-01-19 | 多特瑞尔技术有限公司 | 用于飞行器的护罩 |
| JP6578225B2 (ja) * | 2016-02-23 | 2019-09-18 | 三菱日立パワーシステムズ株式会社 | 吸音スプリッタ、サイレンサ、ガスタービン用煙突、および、ガスタービン |
| GB201707836D0 (en) * | 2017-05-16 | 2017-06-28 | Oscar Propulsion Ltd | Outlet guide vanes |
| US11097828B2 (en) | 2017-07-24 | 2021-08-24 | Dotterel Technologies Limited | Shroud |
| CN109665091B (zh) * | 2018-12-20 | 2022-03-25 | 中国空气动力研究与发展中心低速空气动力研究所 | 一种基于渐变多孔的后缘噪声抑制方法 |
| US12420918B2 (en) * | 2022-04-13 | 2025-09-23 | Haymatt, L.L.C. | Rotor blade tracking wedge with porous elements |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1717745A (en) * | 1928-02-03 | 1929-06-18 | Tismer Friedrich | Propulsion screw |
| US1946129A (en) * | 1933-10-03 | 1934-02-06 | Cebulski Joseph | Noiseless propeller blade for aircraft |
| US2340417A (en) * | 1941-10-07 | 1944-02-01 | Clyde E Ellett | Noiseless propeller |
| US2333555A (en) * | 1941-10-22 | 1943-11-02 | Prucha Emil John | Silent propeller |
| US2759554A (en) * | 1952-08-04 | 1956-08-21 | Bolt Beranek & Newman | Acoustic absorber |
| US2935151A (en) * | 1955-09-19 | 1960-05-03 | Bolt Beranek & Newman | Acoustic absorber |
| US3044559A (en) * | 1959-07-14 | 1962-07-17 | Chajmik Joseph | Propeller |
| US3402914A (en) * | 1965-02-10 | 1968-09-24 | Curtiss Wright Corp | Method of controlling the permeability of a porous material, and turbine blade formed thereby |
| US3266130A (en) * | 1965-10-21 | 1966-08-16 | Fort Wayne Metals Inc | Method of making a permeable airfoil skin |
| US3477231A (en) * | 1967-12-26 | 1969-11-11 | Gen Electric | Noise reduction |
| US3481427A (en) * | 1968-11-29 | 1969-12-02 | Mc Donnell Douglas Corp | Acoustical panel structure |
| US3666043A (en) * | 1970-11-12 | 1972-05-30 | Rohr Corp | Air divider ring structure for jet engine inlet air duct |
-
1972
- 1972-01-27 US US00221223A patent/US3779338A/en not_active Expired - Lifetime
-
1973
- 1973-06-26 CH CH931273A patent/CH581270A5/xx not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0237976A3 (de) * | 1986-03-19 | 1989-03-01 | Alcatel SEL Aktiengesellschaft | Axiallüfter |
Also Published As
| Publication number | Publication date |
|---|---|
| US3779338A (en) | 1973-12-18 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased | ||
| PL | Patent ceased |