| 1. | When Chimere rhymes with helicopter - ONERA's Science Pictures |
| | When Chimere rhymes with helicopter - ONERA's Science Pictures... When Chimere rhymes with helicopter... Virtual mock-up of a helicopter in its computational domain.... The image represents the computation domain for simulating the flows around a helicopter model set up in a wind tunnel.... It is a computational case, called unsteady, as the main rotor and the tail rotor of the helicopter " are rotating " during the numerical simulation.... |
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| 2. | Acoustic Impact of a Helicopter - ONERA's Science Pictures |
| | Acoustic Impact of a Helicopter - ONERA's Science Pictures... Acoustic Impact of a Helicopter during Descent copyright © ONERA 1996-2006... Numerical simulation of the acoustic impact of a helicopter during descent. (DSNA)... |
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| 3. | PIV Measurement of the Flow Downstream of a Helicopter Rotor - ONERA's Science Pictures |
| | PIV Measurement of the Flow Downstream of a Helicopter Rotor - ONERA's Science Pictures... PIV Measurement of the Flow Downstream of a Helicopter Rotor copyright © ONERA 1996-2006... PIV (Particle Image Velocimetry) Measurement of the Flow Downstream of a Helicopter Rotor.... The main cause for helicopters ' noise pollution is the interactions of the numerous vortices generated by rotor rotation with the blades - interactions which produce for example the characteristic noise of a landing helicopter.... |
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| 4. | Dauphin Helicopter Model in Meudon's S2 Wind-Tunnel - ONERA's Science Pictures |
| | Dauphin Helicopter Model in Meudon's S2 Wind-Tunnel - ONERA's Science Pictures... Dauphin Helicopter Model in Meudon's S2 Wind-Tunnel copyright © ONERA 1996-2006... Dauphin helicopter model in Meudon's S2 wind-tunnel ()... |
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| 5. | BRAVOS Analysis Bench for Helicopter Rotors - ONERA's Science Pictures |
| | BRAVOS Analysis Bench for Helicopter Rotors - ONERA's Science Pictures... BRAVOS Analysis Bench for Helicopter Rotors copyright © ONERA 1996-2006... Bravos analysis bench for helicopter rotors ()... |
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| 6. | Helicopters (HELI4) |
| | Helicopters (HELI4)... Dynamic Stall over a Rotor of Helicopter in Forward Flight... |
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| 7. | Helicopters (Index) |
| | Helicopters (Index)... EC 135 helicopter (picture : © Eurocopter)... Helicopters are used for a variety of missions such as transportation, rapid intervention, etc., sometimes in areas where access is difficult.... |
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| 8. | Helicopters (HELI4) |
| | Helicopters (HELI4)Forward and BackwardDynamic Stall over a Rotor of Helicopter in Forward Flight. Numerical simulation by viscous-inviscid interaction. |
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| 9. | Helicopters (HELI2) |
| | Helicopters (HELI2)... Less Noise from Helicopters !... Basic Research on Helicopter Noise Reduction... One of the advantages of a helicopter is to be able to land almost anywhere, but the noise generated by their rotors is a drawback which limits their use in urban areas.... To reduce noise, ONERA develops numerical acoustic prediction methods validated by wind tunnel testing on models and flight testing on real helicopters.... |
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| 10. | Helicopters (HELI3) |
| | Helicopters (HELI3)... |
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