| 1. | Buffeting in the air - ONERA's Science Pictures |
| | To limit this phenomenon and correct the problems of buffeting related to the angle of attack, flaps are placed on the trailing edges of wings : they create a divergence at the lower surface, increasing the rear load, which pushes back the boundary of the buffeting domain - forbidden flight conditions domain.... |
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| 2. | Aérodynamique des hélicoptères et convertibles - publications - ONERA / DAAP |
| | G. Le Bouar, M. Costes, A. Leroy-Chesneau, P. Devinant, Numerical simulationof unsteady aerodynamics of helicopter rotor in manoeuvring flight conditions.... G. Le Bouar, M. Costes, A. Leroy-Chesneau, P. Devinant, Numerical simulations of unsteady aerodynamics of helicopter rotor in manoeuvring flight conditions.... |
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| 3. | SIR Jet - Supersonic missile jet IR signature - ONERA / DOTA-EN |
| | To develop a set of tools for computing the IR signature of the plume for each type of missile in consideration of its flight conditions (altitude, speed).... |
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| 4. | Aerodynamics of Helicopters - Experimental Activities - ONERA / DAAP-EN |
| | By preference, the different rotor geometries are tested at large scale (rotor diameter = 4.20m) in the S1MA wind tunnel in Modane up to high speed flight conditions.... |
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| 5. | Aerodynamics of Helicopters - Publications - ONERA / DAAP-EN |
| | G. Le Bouar, M. Costes, A. Leroy-Chesneau, P. Devinant, Numerical simulationof unsteady aerodynamics of helicopter rotor in manoeuvring flight conditions.... G. Le Bouar, M. Costes, A. Leroy-Chesneau, P. Devinant, Numerical simulations of unsteady aerodynamics of helicopter rotor in manoeuvring flight conditions.... |
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| 6. | Contribution to the Numerical Prediction Methods of Sonic Boom for Supersonic Aircraft - ONERA / DAAP-EN |
| | Pressures field in the vicinity of an aircraft wind-tunnel model illustrating the shock waves structure issued from the aircraft in supersonic flight conditions... |
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| 7. | Military Aircraft (AMIL4) |
| | These flight conditions require special aerodynamic performance capabilities involving new types of control surfaces and suitable flight models.... |
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| 8. | Supersonic Aircraft (ASUP1) |
| | The flight conditions chosen for the European supersonic transport aircraft are very severe for the structural materials.... |
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| 9. | Helicopters (HELI1) |
| | These aerodynamic interactions can have a decisive effect on flight qualities, performance, noise and vibrations.Numerical computations are used to gain a better understanding of these interactions and optimise certain factors to improve the flight conditions.. These computations are validated by accurate measurements made in the air flow around a model in the wind tunnel, under realistic flight conditions.. |
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| 10. | Supersonic Aircraft (ASUP1) |
| | The airfoil shapes designed for the future supersonic aircraft project are tested under these flight conditions by numerical simulation on powerful computers.... |
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