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Nested Loop Model for Air Traffic Control

The Nested Loop Model for Air Traffic Control, presented by Evan Demick, outlines a structured approach to managing airspace effectively. This model differentiates between R-Side Controllers responsible for real-time sector traffic management and D-Side Controllers focusing on traffic planning and coordination. It encompasses Facility Flow Planning (TMU) and National Flow Planning (CFMU), addressing issues of overcrowding and implementing measures such as ground holding, rerouting, and metering. Flight Planning procedures are also discussed, emphasizing the importance of operational efficiency and safety in air traffic management.

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Nested Loop Model for Air Traffic Control

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  1. Nested Loop Model for Air Traffic Control Presented By Evan Demick

  2. Agenda • Sector Traffic Control (R-Side) and Sector Traffic Planning (D-Side). • Facility Flow Planning (TMU). • National Flow Planning (CFMU). • Flight Planning (AOC).

  3. Nested Loop Model http://catsr.ite.gmu.edu/SYST460/NestedLoopModelofATCATM.pdf

  4. R-Side and D-Side Controllers • Sector Traffic Control (R-Side) is responsible for managing aircraft through the use of radar. • 5 Minute Timescale • Sector Traffic Planning (D-Side) is responsible for coordinating handoffs with surrounding sectors. • 5 – 20 Minute Timescale http://books.google.com/books?id=BRtDl0CJpQIC&pg=PA401&lpg=PA401&dq=facility+flow+planning+TMU&source=bl&ots=kyt9l3ETwK&sig=U9a9nWAoGODy5jfNY99wQ1Wj_rg&hl=en&sa=X&ei=kjmXUPKsO8y70AGck4CwAw&ved=0CBwQ6AEwAA#v=onepage&q=facility%20flow%20planning%20TMU&f=false

  5. Facility Flow Planning (TMU) • Traffic Management Unit handles flight coordination on a regional scale (centers). • 30 Minutes to 2 Hour Timescale • May impose flow restrictions on aircraft entering or already in a center if overcrowding becomes an issue. • Can implement “Miles in Trail” or “Time in Trail” requirements. http://books.google.com/books?id=BRtDl0CJpQIC&pg=PA401&lpg=PA401&dq=facility+flow+planning+TMU&source=bl&ots=kyt9l3ETwK&sig=U9a9nWAoGODy5jfNY99wQ1Wj_rg&hl=en&sa=X&ei=kjmXUPKsO8y70AGck4CwAw&ved=0CBwQ6AEwAA#v=onepage&q=facility%20flow%20planning%20TMU&f=false

  6. National Flow Planning (CFMU) • Central Flow Management Unit takes control if overcrowding becomes too much to handle on the regional level. • Project traffic loads based on airline schedules and flight plans. • Pays special attention to weather patterns that can block routes and close airports. • Utilizes three strategies for overcrowding and weather. • Ground Holding: Delays takeoff times for aircraft heading to crowded destination. • Rerouting: Used to maneuver aircraft around weather systems or overcrowded sectors. • Metering: Method used to manage flow rates into sectors. http://books.google.com/books?id=BRtDl0CJpQIC&pg=PA401&lpg=PA401&dq=facility+flow+planning+TMU&source=bl&ots=kyt9l3ETwK&sig=U9a9nWAoGODy5jfNY99wQ1Wj_rg&hl=en&sa=X&ei=kjmXUPKsO8y70AGck4CwAw&ved=0CBwQ6AEwAA#v=onepage&q=facility%20flow%20planning%20TMU&f=false

  7. Flight Planning (AOC) • Airlines utilize an Airline Operations Center for planning company flights. • Centers are staffed by certified flight dispatchers. • Generate flight plans based on aircraft type, weight, and loads, weather conditions airport limitations. • The flight plan details the flight route, weather, alternative airports, fuel requirements, and take-off loads. http://dspace.mit.edu/bitstream/handle/1721.1/35725/FlightOpsICATfinal2.pdf

  8. Thanks for Listening!

  9. Sources • http://books.google.com/books?id=BRtDl0CJpQIC&pg=PA401&lpg=PA401&dq=facility+flow+planning+TMU&source=bl&ots=kyt9l3ETwK&sig=U9a9nWAoGODy5jfNY99wQ1Wj_rg&hl=en&sa=X&ei=kjmXUPKsO8y70AGck4CwAw&ved=0CBwQ6AEwAA#v=onepage&q=facility%20flow%20planning%20TMU&f=false • http://catsr.ite.gmu.edu/SYST460/NestedLoopModelofATCATM.pdf • http://dspace.mit.edu/bitstream/handle/1721.1/35725/FlightOpsICATfinal2.pdf

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