Estimation of Emissions for Civil Jet Conceptual Design

Parts of emission from the aircraft engine are doing harm to the environment. The greenhouse gas emission (CO2 equivalent) per passenger per thousand kilometers is used to measure the emissions in this work. And a new estimation method of emissions for aircraft conceptual design was proposed, based on the ICAO aircraft engine emissions databank and the response surface fitting methods. Because the amounts of greenhouse effects of various pollutant gases rely on altitudes, the estimation accuracy of emission was improved by refining the flight dynamics models in various stages of mission profile. The impacts of the wing configuration on greenhouse effect were discussed, after verifying the accuracy of this proposed method. The results indicate that the greenhouse gas emissions could be reduced by appropriately increasing wing sweep and aspect ratio.