Flight management systems information exchange with AERA to support future air traffic control concepts

Mohleji, S.C.

doi:10.1109/plans.1992.185850

Cited by 3 publications

(2 citation statements)

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“…First, the altitude profile is found (as a function of flying distance) that minimizes fuel consumption. The profile is then rounded down to 1OOO-ft altitudes (the finest resolution used in oceanic air traffic control) to produce a series of step climbs at appropriate locations along the flight path [8].…”

Section: A User-preferred Trajectoriesmentioning

confidence: 99%

Performance analysis of North Pacific Operations using an automated air traffic control system simulation

Mohleji

Hoffman

1993

IEEE Trans. Contr. Syst. Technol.

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The North Pacific (NOPAC) system is the primary air transportation link between North America and the Far East. For safety, the air traffic control (ATC) system enforces minimum separations between aircraft. Over land, where 5-nmi separation is required, continuous radar coverage and very high frequency (VHF) radio communication permit closed-loop control of aircraft. Because of unreliable communications and the lack of surveillance over the ocean, open-loop control of oceanic Bights is the norm, requiring much larger separations. This severely limits route capaaties and therefore the ability of aircraft to fly efficiently. Satellite-based communication, navigation, and surveillance technology will help reduce separations. In this paper, a computer simulation is described which models current and future ATC system operating environments traffic demands, route structures, winds, and separation criteria. Metrics are defined to highlight parameter sensitivities for optimizing direct operating costs, and to provide an assessment of performance in terms of time and fuel penalties under suboptimum operating conditions. The analysis results are intended to help the designers of the future NOPAC system increase airspace capacity and operational efficiency. Requirements are established for further research to automate ATC functions for future real-time closedloop control of aircraft over the ocean.

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Section: A User-preferred Trajectoriesmentioning

confidence: 99%

Performance analysis of North Pacific Operations using an automated air traffic control system simulation

Mohleji

Hoffman

1993

IEEE Trans. Contr. Syst. Technol.

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“…The studies in Reference [6]- [8] conclude that substantial cost savings are possible by flying direct routes. Optimal flight planning criteria and its benefits are described in [9], [10].…”

Section: Introductionmentioning

confidence: 99%

Benefits of direct-to tool in National Airspace System

Sridhar

Chatterji²,

Grabbe³

2000

IEEE Trans. Intell. Transport. Syst.

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Recent initiatives in air traffic management both in the United States and in Europe are aimed at providing air traffic controllers automation tools to separate traffic, meet time constraints required for traffic flow and accommodate route preferences of users such as airlines. These efforts are expected to result in removal of restrictions on users preferred routes without compromising safety. Thus, aircraft will be able to fly optimal routes such as great circle and wind-optimal routes. In the existing system, only a limited number of flights on optimal routes are authorized. Widespread use is limited due to lack of automation tools for maintaining air traffic controller's situational awareness and inter-facility coordination required for safe operations. In addition, aircraft which have the basic navigation capability needed for flying from one navigational aid to another along the airways are unable to fly these optimal routes. National Aeronautics and Space Administration has developed the design for a new automation tool, referred to as the direct-to tool, which advises the controller on direct time-saving routes for any aircraft irrespective of levels of equipage. In contrast to earlier studies on the potential benefits of direct routes in the National Airspace System (NAS), the objective of this paper is to evaluate the benefits based on a controller tool. The paper describes the benefits of applying this algorithm to the 20 air route traffic control centers within the United States. Benefits are measured in terms of the total time savings accrued by flying the direct route. Results are described for three different implementations dependent on the search region bounding each air route traffic control center. The first region exactly encloses the air route traffic control center airspace, the second is the smallest rectangular bounding region while the third is a bigger rectangular bounding region approximately twice as large as the second region. It is shown that the application of the direct-to routing algorithm does not significantly alter the number of conflicts and their spatial distribution compared to the case in which the aircraft fly along the airways. The results presented in the paper suggest that the direct-to routing algorithm can provide significant cost savings to the users without adversely impacting the air traffic management functions.

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