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随着民用航空运输业的发展,飞机对气候环境的影响越来越受到重视。为了满足未来飞机设计中经济性和环保性等指标,有必要在飞机概念设计阶段综合考虑成本和排放的影响。本文使用全球平均温度变化作为衡量飞机排放对气候影响的标准,分析了飞机巡航高度和速度对于排放物的影响。进一步,通过整合气动、重量、成本和排放等学科模型,建立了飞机概念设计阶段的多学科优化框架。基于该优化框架,以机翼平面形状、飞行速度和高度等参数为优化变量,分别以排放最小和成本最低为目标,进行了单目标和多目标优化设计研究。Pareto最优前沿的优化结果显示,单位排放成本的高低会影响成本相对于排放性能的变化趋势。
With the development of the civil aviation transportation industry, the impact of the aircraft on the climate and environment has drawn more and more attention. In order to meet future economic and environmental goals in aircraft design, it is necessary to consider the impact of costs and emissions at the conceptual design stage of the aircraft. This paper uses global average temperature change as a measure of the impact of aircraft emissions on the climate and analyzes the impact of aircraft cruising altitude and velocity on emissions. Further, a multi-disciplinary optimization framework for the conceptual design phase of the aircraft was established by integrating discipline models of aerodynamics, weight, cost and emissions. Based on this optimization framework, single-target and multi-objective optimization design was carried out based on the optimization of the wing shape, flight speed and altitude parameters, with minimum emission and lowest cost respectively. The optimization results of Pareto’s optimal frontier show that the unit discharge cost affects the trend of cost relative to the emission performance.