Driving characteristics and energy saving and emission reduction performance of aircraft electric taxiing system
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摘要:
针对某中程飞机设计了基于主起落架机轮驱动的飞机电动滑行系统(AETS),并对其进行了仿真分析。利用MATLAB/Simulink对AETS进行了建模,分别构建了驱动电机模型、机械系统模型和排放性能评估模型;在此基础上进行了驱动能力、稳定性及节能减排性能的仿真。结果表明:所设计系统驱动能力良好,稳定性优异,节能减排效果明显。利用所设计系统驱动目标飞机在地面上滑行最大速度可达4.91 m/s,基本满足滑行要求;当外在负载波动时,其滑行速度能够平稳调节;在相同条件下,当滑行距离为1 500 m时,利用AETS代替主发动机驱动飞机滑行可节省燃油75%以上,减排CO、HC、NO
X 等有害气体67%以上。-
关键词:
- 飞机电动滑行系统(AETS) /
- 驱动能力 /
- 稳定性 /
- 节能减排 /
- 滑行仿真
Abstract:An Aircraft Electric Taxiing System (AETS) based on the main landing gear wheel drive for a medium-range aircraft is designed, the simulation analysis is carried out as well.MATLAB/Simulink was used to model AETS. The driving motor model, the mechanical system model and the emission performance evaluation model are constructed. On this basis, the driving capability, stability, energy saving and emission reduction performance are simulated.The simulation results show that the designed system has good driving capability, excellent stability, and obvious energy saving and emission reduction performance.Using this system to drive the target aircraft to taxi on the ground, the maximum speed can reach 4.91 m/s, which basically meets the requirements of taxiing.When the external load fluctuates, its taxiing speed can be adjusted smoothly. Under the same conditions, when the taxiing distance is 1 500 m, using AETS to replace the main engine to drive the aircraft taxiing on the ground can save more than 75% fuel, and reduce the emission of CO, HC, NO
X and other harmful gases by more than 67%. -
表 1 A320-200型飞机和滑行道等相关参数[6, 10-11]
Table 1. Relevant parameters of A320-200 aircraft and taxiway[6, 10-11]
分类 参数 数值 滑行参数要求(技术指标) 滑行速度/(km·h-1) 20 滑行加速度/(m·s-2) 0.25 滑行时间/min ≤15 A320-200飞机主要参数 最大起飞质量/kg 77 000 主发型号 CFM56-5B/4P APU型号 GTCP36-300 主起落架承重/% 85.4~95.4 主轮直径/mm 911 前轮直径/mm 353 表 2 AETS相关数据
Table 2. Related parameters of AETS
参数 数值 飞机增重/kg 200 传动比 18.37 APU发电机额定功率/kW 90 机械传递效率 0.895 电气传递效率 0.92 表 3 北京首都国际机场相关参数
Table 3. Related parameters of Beijing Capital International Airport
分类 参数 数值 滑行道参数 滑行道长度/m 1 500 滑行道坡度/rad 0.001 滑行道材质 干湿混凝土 附着力系数 0.5 气候参数 基准温度/(°) 32.8 平均气压/kPa 102.04 水蒸气饱和气压/Pa 1 700 平均湿度/% 50 参数 数值 燃油消耗率FBIF/(kg·s-1) (75+0.267 5PAPU-3.5×10-4PAPU2)/3 600 CO排放率EIFC/(g·kg-1) 8.67 HC排放率EIFH/(g·kg-1) 0.71 NOX排放率EIFN/(g·kg-1) 6.8 -
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