The Study Of Civil Aviation Aircraft Engine Emission And Diffusion Model At Full Flight Phase

With the rapid development of the global aviation industry, though civil aircraft in travel convenience to people,noise and emissions have a serious impact on the human environment,therefore, it got international importantly attention.Some countries or organizations have issue a series of emission standards.The purpose is to restrict the aircraft engine emissions.There are two aspects worthy of study: Engine emissions calculation and the diffusion of emissions in the atmosphere. Now, the study of engine emissions diffusion model is still focused on ground, the study on high-altitude emission diffusion model is still in the blank.However, the high-altitude aviation engine emissions greater impact on the environment and global climate change, so it is necessary to focuses on.The calculation of Engine emissions need apply pollutant emission index. The commonly used emission index calculation methods include emission index method during landing cycle in ICAO and P3-T3 method. In this paper, it applies ICAO calculation method,combined with the relevant standards, calculates the engine emission index in the full flight phase. It applies the fuel flow method Calculates the engine CO2 emissions and emission intensity during the full flight phase. In the study of engine emissions diffusion model, based on the Gaussian diffusion theory, with the application of airborne emissions QAR data and the flight characteristics of civil aircraft, establishes single vehicles aircraft engine CO2 emission diffusion model in the full flight phase.It applies associated numerical simulation software simulation, get intuitive CO2 Concentration diffusion profile.Through these studies, it can establish an initial diffusion model of aviation engine emissions in each flight phase, also provide a reference for the next step to establish the emission superposition diffusion model of multi sorties and multiple emission sources.