MAI will help reduce the noise level in the passenger cabin

Moscow Aviation Institute put into operation a system that allows for a comprehensive assessment of the noise level in passenger aircraft at the stages of flight testing and operation. The system for measuring noise and vibration is based on eight-channel measuring modules of the Ecophysics-500 type. Currently, its application began during acoustic tests of the passenger cabin of a commercial aircraft.

The tests are conducted jointly with the industry on the basis of the research department of the MAI Department 101 "Design and Certification of Aviation Equipment" (NIO-101). The results obtained will allow not only to assess the level of operation of the new system, but also at the current stage to provide the customer with all the necessary data for the development of measures to reduce noise in the passenger cabin.

– Today there are no international standards regulating the maximum permissible noise levels in passenger cabins. Nevertheless, all manufacturers pay great attention to the problem of reducing the noise level in the cabin. And for us, the research in the field of acoustics aimed at improving the comfort of passengers on Russian airliners is a priority. In Russia, the GOST R 70066-2022 standard applies, which imposes technical requirements for acoustic design. We rely on it in our work, – Dmitry Strelets, the Acting Director, Director of the Institute No. 1 "Aviation Technology" MAI, head of NIO-101, noted.

The university experts intend not only to increase the capabilities of the system, but also to expand the range of work in the aeroacoustic direction. There are plans to carry out new work on civil aviation equipment, in particular, to study the noise level in the helicopter cabin.