To the preceding section: Objectives

The methodology of the project is as follows:

  • Develop computational means to design and optimize active acoustic liners, coupling different physics:
    • Engine nacelle acoustic environment, including flow
    • Arrays of electroacoustic membrane absorbers (fluid-structure interactions)
    • Electronic control (local and distributed active impedance control loops)
  • Investigate new transducers technology for better compliance to environmental specifications
  • Investigate alternative active impedance control strategies to tackle multiple harmonic noise reduction, towards low-frequency
  • Develop 2D (flat) and 3D (curved) acoustic liner prototypes for laboratory and aeroacoustic facilities assessment (NLR test facility, PHARE)
To the next section: Technologies