The European Union Aviation Safety Agency (EASA) has published the NORAH2 software prototype and noise hemispheres database, the NORAH2 tool, to estimate the noise on the ground generated by rotorcraft operations. NORAH2 was developed as part of a 4-year research project on rotorcraft noise funded by European Union's Horizon 2020.
You can connect to the NORAH2 research project page to download the tool according to the required terms and conditions.
