A novel method for estimating the space range of battery-powered vertical take-off and landing(VTOL) aircraft is presented. The method is based on flight parameter optimization and numerical iteration. Subsystem model...A novel method for estimating the space range of battery-powered vertical take-off and landing(VTOL) aircraft is presented. The method is based on flight parameter optimization and numerical iteration. Subsystem models including required thrust, required power and battery discharge models are presented. The problem to be optimized is formulated, and then case study simulation is conducted using the established method for quantitative analysis. Simulation results show that the space range of battery-powered VTOL aircraft in a vertical plane is an oblate curve, which appears horizontally long but vertically short, and the peak point is not located on the vertical climb path. The method and results are confirmed by parameter analysis and validations.展开更多
航空运输是交通领域CO_(2)排放增长最快速的部门。文中选择中国民航使用频率较高的超大型、大型、中型和小型飞机的典型机型,基于不同飞机在起飞、爬升、巡航、接近和滑行阶段引擎油耗速率、运行时间和油耗量的变化,计算航空飞机CO_(2)...航空运输是交通领域CO_(2)排放增长最快速的部门。文中选择中国民航使用频率较高的超大型、大型、中型和小型飞机的典型机型,基于不同飞机在起飞、爬升、巡航、接近和滑行阶段引擎油耗速率、运行时间和油耗量的变化,计算航空飞机CO_(2)排放因子。同时结合各机型碳排放因子、额定载客量与客座率评估旅客搭乘不同飞机时的人均CO_(2)排放量(即单位客运周转量CO_(2)排放因子)。结果显示,超大型飞机、大型飞机、中型飞机和小型飞机在其航程区间内的平均CO_(2)排放因子分别为49.8、31.7、16.2和8.5 kg CO_(2)/km;满载条件下单位客运周转量CO_(2)排放因子均值分别为102.6、95.2、81.7和112.4 g CO_(2)/(人∙km)。起飞和爬升阶段引擎油耗速率约为巡航阶段油耗速率的2.6~3.4倍和2.0~2.8倍,飞机CO_(2)排放因子随飞行里程的提高而降低。航空运输是高碳客运方式,相同里程条件下,航空单位客运周转量CO_(2)排放因子显著高于高铁、道路机动车等其他客运方式。提升燃油效率、减少短途航运、合理安排航线以提高客座率并减少中途转机是降低航空碳排放量的有效途径。展开更多
文摘A novel method for estimating the space range of battery-powered vertical take-off and landing(VTOL) aircraft is presented. The method is based on flight parameter optimization and numerical iteration. Subsystem models including required thrust, required power and battery discharge models are presented. The problem to be optimized is formulated, and then case study simulation is conducted using the established method for quantitative analysis. Simulation results show that the space range of battery-powered VTOL aircraft in a vertical plane is an oblate curve, which appears horizontally long but vertically short, and the peak point is not located on the vertical climb path. The method and results are confirmed by parameter analysis and validations.
文摘航空运输是交通领域CO_(2)排放增长最快速的部门。文中选择中国民航使用频率较高的超大型、大型、中型和小型飞机的典型机型,基于不同飞机在起飞、爬升、巡航、接近和滑行阶段引擎油耗速率、运行时间和油耗量的变化,计算航空飞机CO_(2)排放因子。同时结合各机型碳排放因子、额定载客量与客座率评估旅客搭乘不同飞机时的人均CO_(2)排放量(即单位客运周转量CO_(2)排放因子)。结果显示,超大型飞机、大型飞机、中型飞机和小型飞机在其航程区间内的平均CO_(2)排放因子分别为49.8、31.7、16.2和8.5 kg CO_(2)/km;满载条件下单位客运周转量CO_(2)排放因子均值分别为102.6、95.2、81.7和112.4 g CO_(2)/(人∙km)。起飞和爬升阶段引擎油耗速率约为巡航阶段油耗速率的2.6~3.4倍和2.0~2.8倍,飞机CO_(2)排放因子随飞行里程的提高而降低。航空运输是高碳客运方式,相同里程条件下,航空单位客运周转量CO_(2)排放因子显著高于高铁、道路机动车等其他客运方式。提升燃油效率、减少短途航运、合理安排航线以提高客座率并减少中途转机是降低航空碳排放量的有效途径。
