Optimal 4-D Aircraft Trajectories in a Contrail-sensitive Environment
Optimal 4-D Aircraft Trajectories in a Contrail-sensitive Environment
复制标题
轨迹敏感环境中的最佳 4-D 飞机轨迹
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
M. Hansen
中科院分区：
文献类型：
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作者：
Bo Zou;G. Buxi;M. Hansen
飞机引起的尾迹是航空领域气候变化的一个重要来源，也日益引起人们的关注。本文开发了一种方法来确定最佳飞行轨迹，从而在动态、轨迹敏感的环境中最大限度地降低总飞行成本。总飞行成本包括燃油消耗、机组人员、乘客旅行时间、二氧化碳排放和凝结尾迹形成的成本。通过构建多层六边形网格结构来表示空域，我们将单机轨迹优化问题制定为二进制整数程序，允许飞行高度和航向调整以及轨迹信息更新。使用全球变暖潜力概念对各种成本因素进行了量化，特别是与航空产生的凝结尾迹相对应的成本因素。计算分析表明，最佳轨迹主要取决于计算二氧化碳气候影响的时间范围选择。将航班转移到尾迹效应较低的时段是不合理的，因为收益有限，但可能会增加大量乘客航班延误成本。分析进一步扩展到使用连续优化程序确定多次飞行的最佳轨迹。
Aircraft induced contrails present an important source and a growing concern for climate change in aviation. This paper develops a methodology to determine optimal flight trajectories that minimize the total flying cost in a dynamic, contrail-sensitive environment. The total flying costs consist of costs due to fuel burn, crew, passenger travel time, CO2 emission, and contrail formation. By constructing a multi-layer hexagonal grid structure to represent the airspace, we formulate the single aircraft trajectory optimization problem as a binary integer program that allows for flight altitude and heading adjustment, and contrail information update. Various cost factors are quantified, in particular the one corresponding to aviation-generated contrails, using the Global Warming Potential concept. Computational analyses show that optimal trajectories depend critically upon the time horizon choice for calculating the CO2 climate impact. Shifting flights to periods with low contrail effect is not justified, given the limited benefit but potentially large passenger schedule delay cost increase. The analyses are further extended to determining the optimal trajectories for multiple flights using a successive optimization procedure.