DE4217767C1 - - Google Patents
Info
- Publication number
- DE4217767C1 DE4217767C1 DE19924217767 DE4217767A DE4217767C1 DE 4217767 C1 DE4217767 C1 DE 4217767C1 DE 19924217767 DE19924217767 DE 19924217767 DE 4217767 A DE4217767 A DE 4217767A DE 4217767 C1 DE4217767 C1 DE 4217767C1
- Authority
- DE
- Germany
- Prior art keywords
- waveguide
- medium
- openings
- chamber
- sound
- 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.)
- Expired - Fee Related
Links
- 239000001257 hydrogen Substances 0.000 claims abstract description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 7
- 239000001307 helium Substances 0.000 claims abstract description 3
- 229910052734 helium Inorganic materials 0.000 claims abstract description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims abstract description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 3
- 150000002431 hydrogen Chemical group 0.000 claims description 2
- 208000001840 Dandruff Diseases 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 abstract 1
- 230000000644 propagated effect Effects 0.000 abstract 1
- 238000011144 upstream manufacturing Methods 0.000 abstract 1
- 239000003570 air Substances 0.000 description 9
- 239000007789 gas Substances 0.000 description 4
- 239000012080 ambient air Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000001066 destructive effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19924217767 DE4217767C1 (enExample) | 1992-05-29 | 1992-05-29 | |
| GB9310653A GB2271387B (en) | 1992-05-29 | 1993-05-24 | Noise reduction by means of acoustic feedback |
| FR9306470A FR2691828B1 (fr) | 1992-05-29 | 1993-05-28 | Dispositif de réduction du bruit par court-circuit acoustique. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19924217767 DE4217767C1 (enExample) | 1992-05-29 | 1992-05-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE4217767C1 true DE4217767C1 (enExample) | 1993-08-26 |
Family
ID=6459981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19924217767 Expired - Fee Related DE4217767C1 (enExample) | 1992-05-29 | 1992-05-29 |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE4217767C1 (enExample) |
| FR (1) | FR2691828B1 (enExample) |
| GB (1) | GB2271387B (enExample) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10146121B4 (de) | 2001-09-19 | 2004-01-08 | Ford Global Technologies, Inc., Dearborn | Verfahren zur Bestimmung des Körperschall- und des Luftschallanteils eines Motorengeräusches |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1321073A (en) * | 1970-06-18 | 1973-06-20 | Secr Defence | Acoustic attenuators |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB618224A (en) * | 1947-03-18 | 1949-02-17 | Bristol Aeroplane Co Ltd | Improvements in or relating to apparatus for preventing or reducing the formation of ice on the air ducts of gas turbine engines |
| GB935119A (en) * | 1960-12-05 | 1963-08-28 | Rolls Royce | Improvements relating to the silencing of gas turbine engines |
| DE3020830A1 (de) * | 1980-06-02 | 1981-12-10 | Messerschmitt-Bölkow-Blohm GmbH, 8000 München | Koinzidenzschalldaempfer |
| FR2613773B1 (fr) * | 1987-04-08 | 1990-11-30 | Snecma | Panneau acoustique pour garniture insonorisante et turboreacteur comportant une telle garniture |
| SE501995C2 (sv) * | 1988-11-18 | 1995-07-10 | Tord Goeran Kaarfalk | Anordning för reducering av transmissionsljud |
| DE4012094A1 (de) * | 1990-04-14 | 1991-10-17 | Schottel Werft | Vorrichtung zum schutz von unter wasser befindlichen koerpern gegen sonar-ortung |
-
1992
- 1992-05-29 DE DE19924217767 patent/DE4217767C1/de not_active Expired - Fee Related
-
1993
- 1993-05-24 GB GB9310653A patent/GB2271387B/en not_active Expired - Fee Related
- 1993-05-28 FR FR9306470A patent/FR2691828B1/fr not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1321073A (en) * | 1970-06-18 | 1973-06-20 | Secr Defence | Acoustic attenuators |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2691828B1 (fr) | 1995-04-21 |
| GB2271387B (en) | 1995-08-16 |
| GB2271387A (en) | 1994-04-13 |
| FR2691828A1 (fr) | 1993-12-03 |
| GB9310653D0 (en) | 1993-07-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69406370T2 (de) | System zur Schalldämpfung | |
| DE69017042T2 (de) | Doppeltströmungsschalldämpfer für ein turbinentriebwerk. | |
| DE3788449T2 (de) | Abgasschalldämpfer für Gasturbinen. | |
| DE69016513T2 (de) | Schalldämpfer für Strahltriebwerke. | |
| DE60130577T2 (de) | Verminderung von blattwirbelgeräuschen zwischen fan und leitschaufel | |
| DE602004012272T2 (de) | Flugzeuggasturbinenvorrichtung | |
| DE4228918C2 (de) | Fananordnung für ein Gasturbinentriebwerk | |
| DE69809422T2 (de) | Wellenleistungs-turbine mit einer abgasdüse zur vermeidung von infrarotstrahlung | |
| DE69802083T2 (de) | Mehrstufige ejektor-mischerdüse zur vermeidung von infrarotstrahlung | |
| DE2404001C2 (de) | Schallunterdrückungsverkleidung für Strömungskanäle von Gasturbinentriebwerken | |
| DE69205576T3 (de) | Gasturbinenbrennkammer. | |
| DE69928476T2 (de) | Gezackte Strahldüse zur Unterdrückung des Strahllärms | |
| DE2504073A1 (de) | Akustischer kanal mit asymmetrischer akustischer behandlung | |
| CH680523A5 (enExample) | ||
| DE10325691A1 (de) | Wiederaufheizverbrennungssystem für eine Gasturbine | |
| EP0990851B1 (de) | Brennkammer für eine Gasturbine | |
| DE1015270B (de) | Schalldaempfereinrichtung fuer Duesenstrahlgeraete, insbesondere Flugzeug-Strahltriebwerke | |
| DE2214035A1 (de) | Gasturbinentriebwerk mit Einrichtung zur Verringerung der Geräuschbelästigung durch Modulation | |
| DE2103397A1 (de) | Einrichtung zur Lärmunterdrückung | |
| DE102004018725B4 (de) | Dämpfung von Schwingungen einer Brennkammer durch Resonatoren | |
| DE1948683A1 (de) | Vorrichtung zur Daempfung des Laermes von im Stand laufenden Strahltriebwerken | |
| DE102004010620B4 (de) | Brennkammer zur wirksamen Nutzung von Kühlluft zur akustischen Dämpfung von Brennkammerpulsation | |
| DE4217767C1 (enExample) | ||
| DE1626143A1 (de) | Basisschubduese | |
| DE102007019762A1 (de) | Schallschutzvorrichtung für ein Strahltriebwerk oder eine Turbine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8100 | Publication of the examined application without publication of unexamined application | ||
| D1 | Grant (no unexamined application published) patent law 81 | ||
| 8364 | No opposition during term of opposition | ||
| 8327 | Change in the person/name/address of the patent owner |
Owner name: DAIMLER-BENZ AEROSPACE AKTIENGESELLSCHAFT, 80804 M |
|
| 8327 | Change in the person/name/address of the patent owner |
Owner name: DAIMLERCHRYSLER AEROSPACE AKTIENGESELLSCHAFT, 8099 |
|
| 8327 | Change in the person/name/address of the patent owner |
Owner name: DAIMLERCHRYSLER AEROSPACE AG, 85521 OTTOBRUNN, DE |
|
| 8327 | Change in the person/name/address of the patent owner |
Owner name: EADS DEUTSCHLAND GMBH, 85521 OTTOBRUNN, DE |
|
| 8339 | Ceased/non-payment of the annual fee |