United States Department of Transportation
i
The possibility of instability in NGATS upstream control of flow into airports
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2006-10-01
[PDF-216.32 KB]
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Edition:Final report; September 2005 to September 2006
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Abstract:Representation, estimation and optimization of airport capacity has been a subject of research since the 1950s. Typically the concern has been to establish constraints on the Pareto constraint curve for various combinations of arrival and departure for various time intervals as a function of factors such as weather, runway configuration, etc. Upstream flow control of aircraft into airports (e.g. relative to an arrival fix) has been performed by human air traffic controllers, more recently aided by such tools as the Center-Terminal Radar Approach Control Automation System (CTAS) to assist in predicting near-future 4D trajectories. The Next Generation Air Transportation System (NGATS) Concept of Operations mentions that tactical trajectory management “is aided by automation that optimizes for a number of factors” (including weather, airport configuration, airline priorities, etc.) In this regard it poses the following research issue: “With trajectories manipulated 20 minutes or less ahead, how is trajectory stability affected? What is the effect on keeping computed-times-of-arrival (CTAs) and what is the effect on system functions that rely on CTAs?
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