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Air Traffic Assignment for Intensive Urban Air Mobility Operations
Journal of Aerospace Information Systems ( IF 1.5 ) Pub Date : 2021-06-28 , DOI: 10.2514/1.i010954
Zhengyi Wang 1 , Daniel Delahaye 1 , Jean-Loup Farges 2 , Sameer Alam 3
Affiliation  

In high-density urban air mobility (UAM) operations, mitigating congestion and reducing structural constraints are key challenges. Pioneering urban airspace design projects expect the air vehicles to fit into structured UAM corridor networks. However, most existing air transport networks are not capable of handling the increasing traffic demand, which is likely to cause congestion, traffic complexity, and safety issues. To adapt the increasing demand to the current airspace capacity, a novel macroscopic traffic assignment model is proposed to mitigate the congestion and organize the structure of air traffic flow. Firstly, the UAM corridor is designed and fitted into graph representation. Then, a traffic assignment problem based on linear dynamic system is formalized to minimize the congestion factors and the intrinsic air traffic complexity. A two-step resolution method based on Dafermos’s algorithm is introduced to efficiently solve this optimization problem. A case study is carried out on a two-layer air transport network with intensive UAM operations. The results demonstrate that the proposed model can successfully mitigate urban airspace congestion and organize the UAM traffic into a low-complexity flow pattern. This approach can be used as a tool to assist air navigation service provider in strategic planning for a given transportation network.



中文翻译:

密集型城市空中交通运营的空中交通分配

在高密度城市空中交通 (UAM) 运营中,缓解拥堵和减少结构性限制是关键挑战。开创性的城市空域设计项目希望飞行器能够融入结构化的 UAM 走廊网络。然而,大多数现有的航空运输网络无法应对不断增长的交通需求,这可能会导致拥堵、交通复杂性和安全问题。为了适应不断增长的需求以适应当前空域容量,提出了一种新的宏观交通分配模型,以缓解拥堵并组织空中交通流量结构。首先,UAM 走廊被设计和拟合成图形表示。然后,将基于线性动态系统的交通分配问题形式化,以最小化拥堵因素和固有的空中交通复杂性。引入了一种基于 Dafermos 算法的两步求解方法来有效地解决这个优化问题。案例研究是在具有密集 UAM 操作的两层航空运输网络上进行的。结果表明,所提出的模型可以成功缓解城市空域拥堵,并将 UAM 交通组织成低复杂度的流动模式。这种方法可用作协助空中航行服务提供者对给定运输网络进行战略规划的工具。结果表明,所提出的模型可以成功缓解城市空域拥堵,并将 UAM 交通组织成低复杂度的流动模式。这种方法可用作协助空中航行服务提供者对给定运输网络进行战略规划的工具。结果表明,所提出的模型可以成功缓解城市空域拥堵,并将 UAM 交通组织成低复杂度的流动模式。这种方法可用作协助空中航行服务提供者对给定运输网络进行战略规划的工具。

更新日期:2021-06-28
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