Abstract

Funding for this work was provided by the Advanced Air Transportation Technologies (AATT) project office of NASA's Airspace Systems Program. This paper presents a concept – with the potential for increasing airspace system-wide efficiency and safety – which combines strategic, 4-D userpreferred trajectories with tactical, Airborne Separation Assistance Systems (ASAS). First, prior research and concepts for improving air traffic management are reviewed. Second, the concept for integrating trajectory-orientation and airborne separation assistance is described. Using an example traffic scenario, we then examine how the conflicts might be resolved using A) current day tactical operations, B) current day tactical operations with airborne separation assistance added, and C) a pure trajectory-oriented approach.

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