A Self-Separation Algorithm using Relative Speed for High Density Air Corridor

Nakamura, Yoichi; Takeichi, Noboru; Kageyama, Kota

doi:10.2514/6.2013-5069

Cited by 3 publications

(5 citation statements)

References 1 publication

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“…In this study, it is assumed that the faster aircraft turns the heading to the right, and the slower one does the heading to the left because the algorithm that determines the turning direction based on their relative speed achieves a drastic improvement in control amount while maintaining safety in high density air corridor. 12 On the other hand, in the situation shown as case 2 in Figure 5, aircraft B should not turn the heading to the left to prevent conflict with aircraft C. In this case, only aircraft A should change its heading to avoid conflict. To determine maneuvers, the limitations of heading angle are introduced.…”

Section: Self-separation Algorithmmentioning

confidence: 92%

“…In this study, high density one-way traffic is assumed in the same traffic as the previous study 12 and only the level motion of aircraft is considered. For conflict detection and resolution, a minimum separation distance and a separation control distance are introduced.…”

Section: Simulation Model Traffic Modelmentioning

confidence: 99%

“…12 Since the traffic flow in the corridor is considered to be affected by the width of the corridor, air corridors with different width (10, 20, 30 NM) are considered. Table 1 summarizes the simulation parameters and Figure 10 depicts a display example of aircraft in the corridor, where the circle centered at aircraft has radius R SC .…”

Section: Numerical Simulations Simulation Parametersmentioning

confidence: 99%

“…9 Furthermore, a self-separation algorithm based on the flight intent of the aircraft in the air corridor has been proposed. [10][11][12] Although these were studied based on the assumption that aircraft are able to use full of the airspace, in fact, airspace for the air corridor operation should be strictly limited for efficient use of finite airspace resources. Hence, in this paper, the algorithm for width-limited air corridor is investigated.…”

Section: Introductionmentioning

confidence: 99%

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A self-separation algorithm for width-limited high density air corridor*

Nakamura

Takeichi

2015

Proceedings of the Institution of Mechanical Engineers, Part G:

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Algorithms for self-separation of aircraft operating in a one-way high density air corridor are discussed. In the air corridor, which is considered as a tube or band-shaped piece of airspace that connects high-demand areas, only aircraft capable of self-separation may operate. It is required that all the aircraft fly in the same direction while maintaining safety without instructions of air traffic controllers. To realize high traffic throughput without losing safety, aircraft should be self-separated in an appropriate manner. Additionally, aircraft must operate inside of the assigned airspace for the air corridor operations. In this paper, an algorithm for self-separation of aircraft in a width-limited band-shaped piece of airspace has been developed. The algorithm determines maneuvers for conflict avoidance using information of surrounding aircraft. It is demonstrated that all the aircraft are able to self-separate without conflict in the width-limited air corridor. It is also demonstrated that self-separation using current state information results in a deadlock in the narrow air corridor. As the corridor width increases, aircraft are able to maintain the separation through the use of heading changes while maintaining their optimum speed. Additionally, it is indicated that the installation of sub-route and utilization of optimum speed information prevent a deadlock even though the corridor width is narrow.

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Section: Self-separation Algorithmmentioning

confidence: 92%

Section: Simulation Model Traffic Modelmentioning

confidence: 99%

Section: Numerical Simulations Simulation Parametersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A self-separation algorithm for width-limited high density air corridor*

Nakamura

Takeichi

2015

Proceedings of the Institution of Mechanical Engineers, Part G:

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“…6 The authors investigated the algorithms using the relative position and velocity information in detail, and it was clearly presented possible to achieve self-separation safely with little maneuver with punctuality. 7,8…”

Section: Introductionmentioning

confidence: 99%

Benefit optimization and operational requirement of Flow Corridor in Japanese airspace

Takeichi

Abumi

2015

Proceedings of the Institution of Mechanical Engineers, Part G:

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The Flow Corridor is one of the operational concepts in the future air traffic plans. They are planned to be introduced along high demand routes between airport or city pairs. Aircraft capable of self-separation are allowed to fly along it with no instruction by air traffic controllers. All aircraft will be able to fly along each ones’ own optimum trajectory with punctuality in the Flow Corridor by using the self-separation. In this study, the optimum Flow Corridor allocation based on the potential benefit estimation is discussed. The average fuel consumption and flight time of representative aircraft types are analyzed using their actual flight data in Japan. In addition, the fuel optimum flight trajectories of the same type aircraft are analyzed. Through their comparison, it is clarified that the Flow Corridor introduction enables both the flight time and fuel consumption reduction, and that the fuel consumption reduction is remarkably large in both the cruise and descent trajectories. The optimization analyses varying the aircraft weight clarified the height and speed extent among the optimum trajectories of various aircraft types. This determines the cross-sectional shape of the Flow Corridor. The situations of overtaking are also analyzed assuming that all aircraft in the Flow Corridor fly punctually with appropriate landing intervals at the destination airport. It is clarified that the overtaking frequently occurs during both the cruise and descent trajectories. These results provide the requirements for the self-separation during the descent phase.

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