HELICOPTER’S NOISE REGULATION AND ACOUSTIC CHARACTERISTICS OF THE ACTUAL HELICOPTERS FLEET
Under article problems of helicopter’s noise impact on the environment were considered. Actual ICAO policy in the matter of regulating helicopter’s noise was analyzed. Initial cases and sources of the helicopter’s noise impact, up-to-date design and operational practices aimed to improve the acoustic characteristics of helicopters were examined. Acoustic characteristics of annual and up-coming helicopters were analyzed. Noise reducing and ways of possible tightening of requirements of noise emission exciting programs were considered.