[Gaseous Emission Characterization of Civil Aviation Aircraft During Takeoff]

During takeoff, high engine thrust and large fuel consumption are required to produce enough power for aircraft lift-off which has more impacts on human health and environment than the other activities. Boeing 737-800 was selected as a typical type in the study. Based on simulation of aircraft performance, air pollution emissions were accurately calculated for different takeoff processes. According to the results, NO was the most abundant emission during takeoff. Emissions of NO, CO, HC, and SO₂ during takeoff with normal method were 4.849, 0.062, 0.031, 0.229 kg respectively. The assumed temperature method could be used to reduce thrust by setting an assumed temperature which was greater than actual temperature. This method resulted in decreased NO emission and increased CO emission. And emissions of HC and SO₂ had no significant changes. Compared with these results, the emissions calculated by ICAO emission model led to relatively large errors. And the emission level of normal takeoff method was approximately equal to the emission level of small cars traveling 9508 km. The modified model provides the basis for the accurate estimation of the air pollution emission inventory of airport.