Minimising emissions from flights through realistic wind fields with varying aircraft weights
Minimising emissions from flights through realistic wind fields with varying aircraft weights
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DOI：
10.1016/j.trd.2023.103660
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发表时间：
2023-04
期刊：
影响因子：
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通讯作者：
Cathie A. Wells;P. Williams;N. Nichols;D. Kalise;I. Poll
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文献类型：
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作者：
Cathie A. Wells;P. Williams;N. Nichols;D. Kalise;I. Poll
国际航空界已同意推进减少二氧化碳排放的行动。采用更省油的路线将迅速和经济地实现这一目标。卫星对跨大西洋飞行路线的全面覆盖现在成为现实，使我们能够考虑从有组织的轨道结构转向基于轨道的行动。在这里，通过全球大气再分析数据集的风场，使用动态规划找到了燃料的最优轨迹。飞机航向和空速的控制变量是不同的，以找到空闲时间、燃料最少的航线。飞机燃油消耗的模型具有新的特定型号的燃料燃烧功能，该功能包含了飞机在燃烧燃料时的质量减少。从2019年12月1日至2020年2月29日，将模拟航线的燃料使用量与根据记录的飞行数据估计的燃料进行比较。结果表明，在不显著改变飞行时长的情况下，平均燃油减少4.2%是可能的。这相当于减少了1660万公斤的二氧化碳排放。因此，空闲时间、燃料最少的航线有可能提供大量的燃料和排放节省。
The international aviation community has agreed to advance actions to reduce CO 2 emissions. Adopting more fuel-efficient routes will achieve this goal quickly and economically. Full satellite coverage of transatlantic flight routes is now a reality, allowing us to consider moving from the Organised Track Structure to Trajectory-Based Operations. Here, fuel-optimal trajectories through wind fields from a global atmospheric re-analysis dataset are found using dynamic programming. The control variables of aircraft headings and airspeeds are varied to find free-time, fuel-minimal routes. Aircraft fuel consumption is modelled with a new model-specific fuel-burn function, which incorporates aircraft mass reductions as fuel is burned. From 1 December 2019 to 29 February 2020, fuel use from simulated routes is compared with fuel estimates based on recorded flight data. Results demonstrate that an average fuel reduction of 4.2% is possible without significant changes to flight duration. This equates to a reduction of 16.6 million kg of CO 2 emissions. Therefore, free-time, fuel-minimal routes have the potential to offer substantial fuel and emissions savings.