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Feasible Time Range Analysis of Wide Fleet for Continuous Descent Arrival

机译：连续下降的宽机队可行时间范围分析

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In this paper, the feasible time range for the specified flight range defined from the RTA frozen waypoint to meter fix is analyzed using Trajectory Performance Analyzer framework using optimal control approach. Time cost and fuel cost are used to obtain the performance limit trajectories. To get a realistic feasible time range, several uncertainties such as descent weight and wind variation which affect trajectory performance significantly are considered. The final feasible time range of the specific aircraft type is determined by the intersection of all kind of variation results. Feasible time ranges of all arrival aircraft at KATL are calculated with specific wind case and the result shows that there exists common feasible time range for all aircraft can fly. In order to extend common feasible time range, ∈-optimal solution concept is proposed. By this trajectory performance bound analysis in descent phase, common feasible time range of wide fleet with northwest route in Atlanta center is obtained. By analysis of top of descent point of each aircraft, marginal point at which RTA should be fixed for the success of CDA is obtained. For the application of CDA procedure in heavy traffic condition, time based CDA operation concept is proposed using single transit time strategy for all fleet. The single transit time for all fleet is determined within the common feasible time range. The numerical evaluation shows that single transit time flight in descent phase guarantees the conflict free flight if the required minimum separation for CDA procedure in TRACON is kept.
机译：在本文中，使用轨迹控制性能分析器框架并使用最佳控制方法，分析了从RTA冻结航路点到仪表固定点的指定飞行范围的可行时间范围。时间成本和燃料成本用于获得性能极限轨迹。为了获得现实可行的时间范围，考虑了一些不确定性，例如下降重量和风速变化，这些不确定性会显着影响弹道性能。特定飞机类型的最终可行时间范围由各种变化结果的交集确定。根据特定的风况，计算了所有到达KATL的飞机的可行时间范围，结果表明存在一个通用的可行时间范围，所有飞机都可以飞行。为了扩展常见的可行时间范围，提出了ε最优解的概念。通过该下降阶段的轨迹性能边界分析，获得了亚特兰大市中心西北航道的大型舰队常见的可行时间范围。通过分析每架飞机的下降点的顶部，可以确定为确保CDA成功而应将RTA固定的边界点。为了在交通繁忙的情况下应用CDA程序，针对所有车队提出了基于时间的CDA操作概念，该方法使用单一渡越时间策略。所有车队的一次渡越时间是在共同的可行时间范围内确定的。数值评估表明，如果保持TRACON中CDA程序所需的最小间隔，则下降阶段的一次渡越时间飞行可确保无冲突飞行。

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