| 1. | Effects of installation on the downstream fan noise from dual flow turbojets - ONERA's Science Pictures |
| | Effects of installation on the downstream fan noise from dual flow turbojets - ONERA's Science PicturesWho are we ?Science Pictures... Effects of Installation on the Downstream Fan Noise from Dual Flow Turbojets copyright © Onera 2008. All rights reserved 3D numerical simulation of the effects of installation for a nozzle installed above the tail plane in take-off conditions : instantaneous disturbed pressure maps.. |
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| 2. | A Strong Expertise in Turbofan Aeroacoustics - Onera's Technological Offer |
| | Engines, Turbofans, Nacelles, Noise reduction, Fan noise sources, Fan performances, Acoustic propagation in ducted fans.... C. Polacsek, S. Burguburu, S. Redonnet, M. Terracol, Numerical Simulations of Fan Interaction Noise Using a Hybrid Approach, AIAA Journal, Vol. 44, No. 6, 2006.... |
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| 3. | Numerical Aero-Acoustics of Fans - ONERA / DSNA-EN |
| | Rotor-stator interaction and fan downstream noise (resp. elsA and sAbrinA computations)... |
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| 4. | Numerical Aero-Acoustics of Fans, Projects in Progress - ONERA / DSNA-EN |
| | Computation of the Fan Noise - elsA / sAbrinA Coupling... Airbus preliminary project which, among other things, includes an experimental and numerical study of the downstream acoustic radiation of fan noise, and of the possibility of masking it with a tail unit wing (" Rear Fuselage Nacelle " type aircraft).... |
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| 5. | Numerical Aero-acoustics of Fans, Radiation Downstream of a Dual-Flow Turbojet - ONERA / DSNA-EN |
| | Begun in January 2005, this project directly involves Onera / DSNA (BREC unit), which was assigned a series of acoustic propagation simulations, simulations concerning the various components (or modes) characterizing the fan downstream noise generated by a conventional dual-flow turbojet.... Instantaneous acoustic pressure fields obtained (sAbrinA program) for various fan downstream noise modes, emitted at the blade passage frequency.... |
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| 6. | CV de Cyril Polacsek - Onera |
| | Since 5 years he is in charge of numerical simulation activities regarding with fan noise generation and propagation aiming to provide a reliable computation tool to be used for low-noise fan optimisation and anti-noise concept expertise.... |
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| 7. | Fan Noise radiated downstream a Coaxial Jet Engine - ONERA's Science Pictures |
| | Fan Noise radiated downstream a Coaxial Jet Engine - ONERA's Science Pictures... Fan Noise radiated downstream a Coaxial Jet Engine copyright © Onera 2006 - Tous droits réservés... Numerical simulation of the fan noise radiated downstream a coaxial jet engine... In the case of a traditional turbojet, engine noise (2) integrates mainly the jet noise (due to the fast hot gas ejection by the nozzle), and the fan noise (due to the fluid / structure interactions generated by the rotating blades feeding the secondary duct).... |
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