Although noise pollution caused by airplanes is regarded as less of a challenge than reducing fuel consumption, it will nevertheless be a major issue in the development of the aeronautic sector and in the sharp increase in air traffic.

With ongoing partnerships with manufacturing research firms, our research focuses on the characterisation, modelling and treatment of multiple sources of noise caused by an aircraft: those related to its engines and motors and those related to aerodynamics, caused by the movement of the aircraft through the air.

The challenge

Acoustics applied to aeronautics is a science based in large part on wind tunnel testing, in flight or on the ground. The phenomena in play are numerous and complex, blending acoustics, aerodynamics and thermodynamics. The medium-term objective is to make this science less and less empirical.

Today, the necessary means of calculation and predictive models are not yet mature enough to estimate the noise of a new airplane design without a minimum set of measured data. Joint research between aircraft manufacturers and firms like our own aims to gradually integrate physical models into digital simulators. This will put us in a better position to predict the noise impact of an aircraft, starting from the design phase.

Reduction through understanding

We are studying noise reduction technology by identifying noise sources in aeronautic equipment and systems, by implementing reliable prediction tools (at the level of the source, the transmission and the overall aircraft, including incorporation of the impact on the environment) and means of testing adapted to experimental validation.

In this way, our research activities in the area of acoustic aim to:

  • Improve passive noise reduction systems.
  • Improve current means of noise reduction.
  • Develop new methods to take into account previously neglected phenomena (noise on the ground, installation effect).
  • Innovate by producing new designs and calculations for parts, testing associated prototypes, analysing designs and combing these.

We brainstorm in order to adapt this knowledge to the needs of the railway transport and automotive sectors or even to the wind energy sector.

Research project

CROR (rotor noise modelling and reduction)

What is the level of interest of aircraft builders in reducing the noise pollution from their machines?
It is critical, because the regulatory framework is growing stricter all the time. The noise level authorised by the International Civil Aviation Organisation has been lowered by 40 decibels in recent decades, even as airplane wingspans and global fleet sizes have continued to increase. This also places pressure on the noise perceived both by residents living near airports and by personnel at these airports.



todo todo
  • Myriam Bouvier
    Myriam Bouvier
    Acoustic Manager
    +33 (0)5 34 46 92 23