| Citation: | CAO Huiling, YAN Jiawei, KUANG Jiajun, et al. Research on impact of aircraft emissions on surrounding environment of airports[J]. Journal of Aerospace Power, 2023, 38（10）：2501-2515 doi: 10.13224/j.cnki.jasp.20210673
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In order to truly and effectively assess the impact of aviation pollutants on the airport and its surrounding environment, an aircraft LTO (landing and take-off) cyclic pollutant emission diffusion evaluation model under multi-factor fusion was constructed. According to the parameters characterizing the actual operation of the engine in the airborne QAR (quick access recorder) data, the pollutant emissions can be accurately obtained, and then the real-time emission source strength can be determined; the flight coordinate system was established, and the actual operating conditions of the aircraft were combined. The surrounding environmental factors of the airport amended the Gaussian puff model. According to the distribution of pollutant emission concentration in different flight stages of the aircraft, the pollutant diffusion trend was determined, and then: (1) the geographic range of the emission pollutant diffusion concentration exceeding the standard was determined; (2) the impact of the emission pollutants on common areas was analyzed; (3) the impact of superposition and diffusion of pollutants discharged by multiple aircraft was analyzed; (4) monitoring points for the concentration of discharged pollutants were set. Through calculation, it was concluded that the peak concentration of emission pollutants in the LTO cycle of the B777-300ER aircraft equipped with GE90-115B engines was mainly concentrated in the range of 26.05−576 mg/m3, and the pollutant emission height in the approach stage was concentrated in the range of 446.49−593.67 m, the geographical range of pollutant concentrations in the downwind direction exceeding the standard was 0−647 m; the pollutant emission height in the take-off and climbing stage was concentrated in the early stage of take-off at 1.34−96.03 m, and the pollutant concentration in the downwind direction exceeded the standard geographical range of 0−127 m. The pollutant diffusion concentration of 647−1000 m in the downwind control area did not exceed the standard, but the impact on the environment cannot be ignored.
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