| 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 Pictures... Effects of Installation on the Downstream Fan Noise from Dual Flow Turbojets copyright © Onera 2008... The fan of a turbojet is one of the dominant sources of the noise generated by aircraft in the take-off and approach phases.... |
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| 2. | A Strong Expertise in Turbofan Aeroacoustics - Onera's Technological Offer |
| | Contra-rotating fan model... Fan inlet 3D grid Aeronautics... Engines, Turbofans, Nacelles, Noise reduction, Fan noise sources, Fan performances, Acoustic propagation in ducted fans.... CEPRA19 anechoïc wind tunnel, RACE (SNECMA) fan stage rig.... 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 |
| | Numerical Aero-Acoustics of Fans - ONERA / DSNA-EN... Numerical Aero-Acoustics of Fans... Rotor-stator interaction and fan downstream noise (resp. elsA and sAbrinA computations)... The recent growth in codes solving the equations of fluid mechanics has brought significant progress in research on the theme of numerical aero-acoustics of fans.... |
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| 4. | Fans - ONERA / DAAP-EN |
| | Fans - ONERA / DAAP-ENWho are we ?Turbomachinery Aerodynamics... FANS. The Modane (France) center's S1 wind tunnel operates using two counter-rotating 15 meter diameter fans.. Each rotor is driven by a Pelton turbine with a maximum power of 44 MW. This machine, unique in its type, has been in service for more than 50 years.. |
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| 5. | Numerical Aero-Acoustics of Fans, Projects in Progress - ONERA / DSNA-EN |
| | Numerical Aero-Acoustics of Fans, Projects in Progress - ONERA / DSNA-EN... Numerical Aero-Acoustics of Fans... 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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| 6. | Numerical Aero-Acoustics of Fans, Turbojet Interaction Noise - ONERA / DSNA-EN |
| | Numerical Aero-Acoustics of Fans, Turbojet Interaction Noise - ONERA / DSNA-EN... Numerical Aero-Acoustics of Fans... |
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| 7. | Numerical Aero-acoustics of Fans, Radiation Downstream of a Dual-Flow Turbojet - ONERA / DSNA-EN |
| | Numerical Aero-acoustics of Fans, Radiation Downstream of a Dual-Flow Turbojet - ONERA / DSNA-EN... Numerical Aero-Acoustics of Fans... The purpose of Airbus's Low Noise Aircraft 2 (LNA2) project is to characterize, experimentally and numerically, the downstream acoustic radiation noise of the fan, to reduce it by installation effect (specifically, an acoustic masking effect by the tail unit and rear fuselage).... |
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| 8. | CV de Cyril Polacsek - Onera |
| | Rapidly he became a specialist in rotor, propeller and turbofan aeroacoustics and was involved many projects devoted to rotating plant and ducted fan applications for industry partners (Airbus, Safran).... 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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| 9. | 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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| 10. | onera |
| | Jet & Fan · Approach :... Fan & airframe... FAN, TURBINE AND COMBUSTOR NOISE... FAN AND COMPRESSOR NOISE © AIRBUS S.A.S All rights reserved.... Fan... Fan... Inlet fan © AIRBUS S.A.S All rights reserved.... Aft fan... Masked sources · inlet fan · combustion · turbine... Confidential and proprietary document. inlet & aft fan compressor combustion turbine... |
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