Evaluation of research initiatives on the problem of reducing the aviation transport noise rate in accordance with the tasks of Flightpath 2050 goal 9Sergiy Dmytriyev, Vasyl Loginov, Mykhailo Mitrakhovich and Ekaterina DoroshenkoMATEC Web Conf., 304 (2019) 02001DOI: https://doi.org/10.1051/matecconf/201930402001