With the gradual recovery of the civil aviation industry,the flight volume at various airports nationwide began to recover gradually,but the aviation noise pollution also emerged and seriously affected the quality of life for residents around the airport.Solving the problem of airport noise is one of the keys to building a comprehensive green civil aviation system in China.Atpresent,ICAO has proposed two optimization procedures to reduce noise pollution:Noise Abatement Departure Procedure(NADP)and Continuous Climb Operation(CCO).In this paper,the equivalent continuous A sound level is taken as the index of noise assessment and the standard departure procedure and noise optimization program are simulated and verified.The noise contour maps of the three optimization programs are obtained and their distribution rules are summarized.Meanwhile,different noise reduction schemes are proposed based on the distribution of different class 1 acoustic environmental zones.
维普
万方数据