7 tasks identified• Flight Arrival• Interaction Detection• Resolution Planning• Resolution Implementation• Monitoring• Other Trajectory Changes• Co-ordination

Analyse the Operational Concept

Identify the Actors

Identify the Tasks

Application of the Capacity Metric to En-routeApplication of the Capacity Metric to En-route

Identify the roles and procedures for the humans in the system, Controllers, Pilots etc.

• Human, e.g.• Tactical Controller• Planning controller• TMA Controller• Pilot

• Machine elements, e.g.• Trajectory Predictor• Conflict Probe• Datalink

Resolution Planning

ResolutionImplementation

Monitoring

Other TrajectoryChanges

Co-ordination

Interaction Detection(i.e. Conflict Detection)

Flight Arrival

Actor 1TC

Actor 2PC

Actor 3TrajectoryPredictor

Actor 3ConflictProbe

… … Actor nActor

Task

Allocation of Actors to ActivitiesAllocation of Actors to Activities

Perform Experiment

• Follow the experimental plan, observe to ensure the procedures are followed

• Collect the data

Process Recorded Data

• Process the data to identify the events that occurred during the experiment

Calculate Metric

Application of the Capacity Metric, continuedApplication of the Capacity Metric, continued

• For each task determine and allocate an amount of IPL

• For Resolution Planning the algorithm allocates an amount of IPL dependent on the assessed “difficulty” or complexity of the conflict using factors such as proximity and geometry of other aircraft, proximity of aircraft to sector boundary, see next slide

Interaction Detection Zone

Look-ahead Time Limit

7. Around the route is an interaction detection zone

Direction of flight

Determination of IPL for a Trajectory UpdateDetermination of IPL for a Trajectory Update1. Aircraft BAW1234 is planned to fly the route shown

2. Around the route is a conflict detection zone

Conflict Detection Zone

3. A potential conflict exists

Conflict with another aircraft

Detection / Planning Occurs

4. The potential conflict is detected

Resolution Implementation Occurs

6. The resolution is implemented

Trajectory Edit

5. A trajectory edit will remove thepotential conflict

Other Aircraft

8. To determine IPL the location of other aircraft is considered

Sector Boundary

9. The proximity of the sector boundary is also considered in determining IPL

BAW1234

Tactical Controller RoleTactical Controller Role

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Current Control Control in advanced tool environment

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Sample output from the Capacity metric

Capacity in terms of Sector ThroughputCapacity in terms of Sector Throughput

Tactical : Estimated Maximum IPL by Sector Flow Rate

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ORG 0 : y = 0.004x2 + 0.660x

ORG 1 : y = 7E-18x2 + 0.321x

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Planner : Estimated Maximum IPL by Sector Flow Rate

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ORG 0 : y = 0.004x2 + 0.380x

ORG 1 : y = 0.003x2 + 0.574x

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