基于经济性和环保性的下一代客机轨迹优化

Trajectory optimization of next generation civil aircrafts based on economy and environment impact

针对提高民航客机飞行经济性和降低其对环境污染的问题,基于"下一代航空运输系统"的连续性飞行剖面,建立纵向飞行轨迹模型,综合经济性和环保性两类目标,对飞行轨迹进行了优化。以某型客机为例,优化目标分别为直接使用成本、总温室气体排放量以及两者组合的多目标,基于"下一代航空运输系统"的连续性飞行剖面,选用不同的航程进行了轨迹优化。结果表明,排放量受飞行高度的影响较大,而直接使用成本则对航时和油耗更为敏感。

In order to improve the flight economy of civil aircraft and reduce its environmental impact,the vertical flight trajectory models were established based on the continuous flight profile which is described in the ＂Next Generation Air Transportation System＂. Synthesizing both of the economy and environmental impact metrics,the vertical flight trajectory of civil aircraft was optimized. Taking a passenger plane as an example,the optimization objectives were the direct operation cost,the total global warming potential and a synthesis objective,and the flight trajectory were analyzed and optimized with the various ranges for the Next Gen continues flight profile. The results indicate that the altitude has great influence on the emissions,whereas the direct operating cost is more sensitive to the endurance and the fuel consumption.