#aerobd.news : JSC Sukhoi Civil Aircraft (SCAC) and the Central Aerohydrodynamic Institute reports completion of more tests on the Sukhoi Superjet 100 (SSJ100) aircraft. These results provide technical solutions to improve passenger acoustic comfort that will be applied in future SSJ100 batch manufacturing.

As requested by SCAC, TsAGI completed the cycle studies of the noise profile that determines the inflight acoustic environment in the passenger and crew cabins. Studies were conducted on test and production SSJ100 aircraft. The objective was to find out whether it would be possible to improve the level of comfort.

To carry out acoustic flight tests, microphones for noise level measurement were installed throughout the length of the passenger cabin and in the crew cabin. Also, special-purpose windows with detectors measuring pressure pulsation on the exterior surface of fuselage were installed. The tests showed that noise exposure limits inside the passenger and cockpit met the requirements, but there is room for further improvement.

To reach the quietest and most comfortable results, TsAGI experts recommended that innovative vibration absorbing materials should be used in SSJ100 tail and central sections. SCAC will apply the recommendations to new Sukhoi Superjet 100 batch manufacturing in the near future.