Role Of Chevrons In Engine Noise Control
Aircraft noise has been an issue of enormous environmental, financial, and technological impact. FAA statistics has forecast that aviation is likely to grow over the next 20 years at an average rate of 3.8% per year [1] for which the use of jet engines as the prime power plant is inescapable. Most c...
Guardat en:
| Autors principals: | , , , |
|---|---|
| Format: | Article |
| Idioma: | anglès |
| Publicat: |
R&D Wing, MIST
2015
|
| Matèries: | |
| Accés en línia: | http://hdl.handle.net/123456789/224 |
| Etiquetes: |
Sense etiquetes, Sigues el primer a etiquetar aquest registre!
|
| _version_ | 1868227015327350784 |
|---|---|
| author | Abdus Salam, Gp.Capt. (BAF) NC Chattopadhyay, Gp.Capt. (IAF) Tasnim, Nazifa Bin Hossain, Asif |
| author_browse | Abdus Salam, Gp.Capt. (BAF) Bin Hossain, Asif NC Chattopadhyay, Gp.Capt. (IAF) Tasnim, Nazifa |
| author_facet | Abdus Salam, Gp.Capt. (BAF) NC Chattopadhyay, Gp.Capt. (IAF) Tasnim, Nazifa Bin Hossain, Asif |
| author_sort | Abdus Salam, Gp.Capt. (BAF) |
| collection | DSpace |
| description | Aircraft noise has been an issue of enormous environmental, financial, and technological impact. FAA statistics has forecast that aviation is likely to grow over the next 20 years at an average rate of 3.8% per year [1] for which the use of jet engines as the prime power plant is inescapable. Most commercial aircrafts are equipped with turbofan engines due to their capability of providing higher performance and lower noise when compared with turbojet engines. Dominant noise sources of turbofan engines are from the fan (including the stator) and the exhaust (also referred to as the jet).The noise produced in these two areas during takeoff and landing has a profound impact on the communities surrounding the airports. As a result, aircraft noise has been the target of strict FAA regulations, making turbofan engine noise suppression became the subject of intensive research and development. One of the significant sources of aircraft noise in modern jet aircraft is the turbulence generated in the shear layers around the engine’s exhaust. A number of flow control approaches have been applied to modify the flow structures in the shear layer and the radiated sound. One of the simplest and widely accepted approaches is the application of chevrons to the trailing edge of the nozzles. The purpose of this paper is to focus on the development, features & techniques of sound suppression of chevrons nozzles. |
| format | Article |
| id | oai:localhost:123456789-224 |
| institution | My University |
| language | English |
| publishDate | 2015 |
| publishDateRange | 2015 |
| publishDateSort | 2015 |
| publisher | R&D Wing, MIST |
| publisherStr | R&D Wing, MIST |
| record_format | dspace |
| spelling | oai:localhost:123456789-2242016-01-21T17:37:25Z Role Of Chevrons In Engine Noise Control Abdus Salam, Gp.Capt. (BAF) NC Chattopadhyay, Gp.Capt. (IAF) Tasnim, Nazifa Bin Hossain, Asif Chevron, noise reduction, saw tooth, inner & outer shear layer, variable geometry, centre rotating vortex, active chevron. Aircraft noise has been an issue of enormous environmental, financial, and technological impact. FAA statistics has forecast that aviation is likely to grow over the next 20 years at an average rate of 3.8% per year [1] for which the use of jet engines as the prime power plant is inescapable. Most commercial aircrafts are equipped with turbofan engines due to their capability of providing higher performance and lower noise when compared with turbojet engines. Dominant noise sources of turbofan engines are from the fan (including the stator) and the exhaust (also referred to as the jet).The noise produced in these two areas during takeoff and landing has a profound impact on the communities surrounding the airports. As a result, aircraft noise has been the target of strict FAA regulations, making turbofan engine noise suppression became the subject of intensive research and development. One of the significant sources of aircraft noise in modern jet aircraft is the turbulence generated in the shear layers around the engine’s exhaust. A number of flow control approaches have been applied to modify the flow structures in the shear layer and the radiated sound. One of the simplest and widely accepted approaches is the application of chevrons to the trailing edge of the nozzles. The purpose of this paper is to focus on the development, features & techniques of sound suppression of chevrons nozzles. R&D Wing 2015-10-06T08:23:13Z 2015-10-06T08:23:13Z 2013-02 Article 2224-2007 http://hdl.handle.net/123456789/224 en MIST Journal of Science and Technology;Volume 2, Number 1, February 2013 application/pdf R&D Wing, MIST |
| spellingShingle | Chevron, noise reduction, saw tooth, inner & outer shear layer, variable geometry, centre rotating vortex, active chevron. Abdus Salam, Gp.Capt. (BAF) NC Chattopadhyay, Gp.Capt. (IAF) Tasnim, Nazifa Bin Hossain, Asif Role Of Chevrons In Engine Noise Control |
| title | Role Of Chevrons In Engine Noise Control |
| title_full | Role Of Chevrons In Engine Noise Control |
| title_fullStr | Role Of Chevrons In Engine Noise Control |
| title_full_unstemmed | Role Of Chevrons In Engine Noise Control |
| title_short | Role Of Chevrons In Engine Noise Control |
| title_sort | role of chevrons in engine noise control |
| topic | Chevron, noise reduction, saw tooth, inner & outer shear layer, variable geometry, centre rotating vortex, active chevron. |
| url | http://hdl.handle.net/123456789/224 |
| work_keys_str_mv | AT abdussalamgpcaptbaf roleofchevronsinenginenoisecontrol AT ncchattopadhyaygpcaptiaf roleofchevronsinenginenoisecontrol AT tasnimnazifa roleofchevronsinenginenoisecontrol AT binhossainasif roleofchevronsinenginenoisecontrol |