| 1. | Take-off at the Martel test bench - Zoom in the Lab |
| | Take-off at the Martel test bench - Zoom in the Lab... Take-Off at the Martel Test Bench... An Ariane 5 take-off creates an extremely powerful shock wave.... Thus, the launcher's environment on take-off has been reproduced.... Numerical simulation of the shock wave on take-off of Ariane 5. ASTRIUM-ST illustration... |
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| 2. | Effects of installation on the downstream fan noise from dual flow turbojets - ONERA's Science Pictures |
| | 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.... 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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| 3. | Aircraft Environment and Flight Qualities - Flight and Disturbances - ONERA / DCSD-EN |
| | Among other phenomena, they can create vertical displacements and rolling motions that are especially dangerous if they occur when the aircraft is near the ground, such as in takeoff or landing phases.... |
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| 4. | Numerical Aero-acoustics of Fans, Radiation Downstream of a Dual-Flow Turbojet - ONERA / DSNA-EN |
| | Aerodynamic field of mean axial velocity (RANS calculation, elsA software, for Airbus France) bathing the nozzle in takeoff (left) and landing (right) conditions.... These modes are generated by the fan (rotor-stator interactions) and are propagated numerically inside and outside the nozzle, both in the presence of the takeoff aerodynamic flow and in the environment at rest.... |
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| 5. | Fan Noise radiated downstream a Coaxial Jet Engine - ONERA's Science Pictures |
| | Due to the strong noise levels emitted by the aircraft at takeoff and approach, this growth compromises the harmonious integration of the commercial aeronautical activity within the environment.... Indeed, the various sound sources on an aircraft at takeoff or approach involve complex physical mechanisms which are still not well known to date.... |
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| 6. | Numerical Simulation of the Trailing Vortices of a Transport Aircraft - ONERA's Science Pictures |
| | The slats and flaps deflected in takeoff phase are the source of the smallest structures.... |
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| 7. | Subsonic Aircraft (ASUB8) |
| | When another aircraft encounters this wake, it is subjected to roll and vertical movements which can be very hazardous, in particular during takeoff or landing.... |
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| 8. | Transatmospheric Aircraft (AHYP3) |
| | During takeoff, the propulsive jet exhausting from the engine nozzle will encounter atmospheric pressure at approximately 1 bar.... |
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| 9. | Propulsion (Index) |
| | Propulsion (Index)Take-off simulation on an Ariane 5 test model(AHYP1). |
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| 10. | Supersonic Aircraft (ASUP1) |
| | During takeoff and landing, when the aircraft is at high angle of attack, a powerful vortex system develops above a swept wing.... |
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