曹惠玲,李玉铭.基于FOA-MOD的飞机巡航阶段BC排放特性与影响因素研究[J].环境科学学报,2021,41(2):406-413
基于FOA-MOD的飞机巡航阶段BC排放特性与影响因素研究
- Research on BC emission characteristics and influencing factors of aircraft during cruise phase based on FOA-MOD
- 基金项目：中国民航大学开放基金（No.000031020102）
- 曹惠玲
- 中国民航大学航空工程学院, 天津 300300
- 李玉铭
- 中国民航大学航空工程学院, 天津 300300
- 摘要：民航飞机在巡航阶段排放的黑碳（BC）可产生区域增温效应.为提高飞机巡航阶段黑碳排放的估算精度，采用一种基于国际民航组织一阶近似方法（FOA）的修正计算方法（FOA-MOD），使用B777-200机载飞行数据（QAR）进行实例分析，并结合当量比、燃烧室入口压力、主燃区火焰温度等热力学参数，计算了某次飞行巡航阶段的BC排放总量.同时，在排放指数和燃油流量的基础上引入排放强度的概念，以更全面地表征污染物排放特性.最后分析了巡航高度、巡航马赫数和巡航重量等飞机性能参数对排放特性的影响.结果表明：修正方法的计算结果更加贴近实际，相对一阶近似方法的计算结果降低19.28%；通过增加巡航高度、减小巡航马赫数和巡航重量，可以不同程度地降低燃油消耗和污染物排放.本研究所做工作能够为评估飞机污染物排放特性，提高飞机运行的经济性和环保性提供参考.
- Abstract：The black carbon (BC) emitted by civil aviation aircraft during the cruise phase could produce a regional warming effect. In order to improve the estimation accuracy of the BC emissions during the cruise phase of the aircraft, a modified calculation method (FOA-MOD) based on the ICAO first order approximation method (FOA) is used; the B777-200 airborne flight data (QAR) is used in a case analysis, where the total BC emissions of a certain cruise phase are calculated by combining thermodynamic parameters such as equivalent ratio, combustor inlet pressure and flame temperature in the main combustion zone; the concept of emission intensity is introduced on the basis of emission index and fuel flow to characterize pollutant emission characteristics more comprehensively; the effects of aircraft performance parameters such as cruise altitude, cruise Mach number, and cruise weight on emission characteristics are analyzed. The result shows that the calculation result using FOA-MOD method is closer to reality, with a 19.28% reduction relatively comparing to FOA method. By increasing the cruise altitude, reducing the cruise Mach number and cruise weight, the fuel consumption and pollutant emissions can be reduced to varying degrees. The work can provide a reference for evaluating aircraft pollutant emission characteristics and improving the economic and environmental protection of aircraft operations.
