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The study presents methods developed to calculate permissible level of acoustic radiation produced by a rotary-screw propulsion unit on ice. The study is based on the papers of the researchers who studied acoustic waves generated by construction and road vehicles. The authors of the study applied the aforementioned theories to the case of interaction between a rotary-screw propulsion unit and ice. The paper provides general measuring methods and evaluates how every type of interaction between propulsion unit components and ice affects overall level of generated acoustic pressure. The results and conclusions obtained during the research can be used to help manufacturers select the parameters of the rotary-screw propulsion unit which contribute to reduction of noise inside the cabin of an all-terrain vehicle.

Case Study: Regulation of Noise Produced by a Rotary-screw Propulsion Unit in an All-terrain Vehicle