Analysis of pollutant concentration in aircraft cabin under MCT single engine drift descent status

Concentration distribution of air pollutants in commercial aircraft cabins are important for providing passengers and crew wi th a healthy and comfortable environment. To verify whether the concentration of air pollutants meets airworthiness standards, this article focuses on the cabin of a specific aircraft and employs numerical simulation to analyze the CO2concentration distribution during single-engine drift. The MCT single-engine drift calculations reveal that pollutants initially increase and then decrease as the aircraft descends from 7620m to the emergency ventilation altitude, the concentrations of pollutants in the x section, y section and z section increasing by 66.87%, 55.61%, and 61.08% respectively, maintaining pollutant concentrations within acceptable limits throughout the drift.