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Properties of Air Traffic Conflicts for Free and Structured RoutingThis paper analyzes the properties of air traffic conflicts in a future free routing system against those in the current structured routing system. Simulation of en route air traffic operations (above 18,000 ft) over the contiguous United States for a 24-hour period, constructed with initial conditions from actual air traffic data, were conducted using the Future ATM Concepts Evaluation Tool (FACET). Free routes were modeled as great circle (direct) routes from origin to destination, and structured routes were derived from actual flight plans along the current system of air routes. The conflict properties analyzed in this study include: (1) Total number of conflicts; (2) Distributions of key conflict parameters; and, (3) Categorization of conflicts into independent conflicts and two types of interacting conflicts. Preliminary results (for Denver Center traffic) indicate that conflict properties in a free routing system are different from those in the current structured routing system. In particular, a free routing system has significantly fewer conflicts, involving a correspondingly smaller number of aircraft, compared to the current structured routing system. Additionally, the conflict parameter distributions indicate that free routing conflicts are less intrusive than structured routing conflicts, and would therefore require small trajectory deviations for resolution.
Document ID
20050019534
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Bilimoria, Karl D.
(NASA Ames Research Center Moffett Field, CA, United States)
Lee, Hilda Q.
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 22, 2013
Publication Date
January 1, 2001
Subject Category
Air Transportation And Safety
Meeting Information
Meeting: AIAA GN&C Conference
Location: Montreal
Country: Canada
Start Date: August 1, 2001
Sponsors: American Inst. of Aeronautics and Astronautics
Funding Number(s)
PROJECT: RTOP 727-01-25
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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