The objective is to study the ship's aerology, i.e. the way in which the airflows around it... Even though all the real airflows can not be represented in a wind tunnel (we do not know how to represent a twisted sheet or the ship's swell motions), all these measurements are essential for getting a better understanding of the air movements and their consequences
When one wants to reduce aeroplane noise related to airflow along the wings,* or aerodynamic noises, it is important to know precisely where they come from and how they are formed... In addition, the sensors disturb the airflow, thus modifying the noise... However, knowing the acoustic pressure isn't enough, we must combine these measurements with a model of the wave propagation in the airflow, that is to say, an aero-acoustic propagation model
The air deforms the structure of an aircraft, while the aircraft's vibrations modify the airflow... The airflow deforms the wings, causing vibrations, which in turn modify the fluid flow
The calculation requires the combined modeling of the airflow, the trajectories of water drops (represented by the white spheres) and the ice accretion on the surface. In addition, it has resulted in numerous publications strengthening ONERA's position as a scientific reference on icing internationally
Load measurement by ONERA six components balances (decoupling device for airflow crossing through). Sonic throat mass flow meters for the primary and fan jets
