CFD Jobs Database - Job Record #11451
Job Record #11451
|Title||Post doctoral position in micro UAV acoustics|
|Employer||ISAE, Institut Supérieur de l'Aéronautique et de l'Espace|
|International||Yes, international applications are welcome|
|Closure Date||Saturday, February 01, 2014|
A 12/11 month contract starting in January/February 2014.
Tasks: experimental and numerical investigation of noise signature of a MAV
rotor in hover.
Unmanned Aerial Vehicles are often used as tactical surveillance tools, or for
reconnaissance purposes, and in both roles the acoustic furtivity is an
essential feature for the success of the mission. Micro Aerial Vehicles (MAVs)
are also deployed in civilian roles and are flown in close proximity to
populated areas. This leads to mounting pressure on reducing the noise impact of
Within the community of MAVs tilt-body configurations have been developed in
order to offer a wide range of services as they offer great versatility in the
field of urban reconnaissance through the quick switching between horizontal and
vertical flights. Tilt-body MAV can fly in both of hover and forward flight. In
hover, the inflow velocity is small and the proprotor must provide high thrust
to support aircraft weight. By contrast, in forward flight, the inflow velocity
is relatively large and the low thrust is just to overcome the drag. The
difference in the inflow and thrust requirement between flight modes suggests
different blade pitch angle in order to optimize overall flight performance.
Moreover as most of MAVs are equipped with electric motors, the main acoustic
source is the propeller. As a matter of fact the rotor efficiency maximization
and its acoustic signature minimization are contradictory goals. As a result
most of this investigation is focused on identifying the best compromise between
This research is supported by the Ministère de la Défense (DGA-MRIS).
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|Name||Dr Emmanuel BENARD|
| Record Data:
|Last Modified||14:22:27, Monday, December 02, 2013|
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