CATS Workshop Target Windows modelling Ion Berechet Air France Consulting, Page: 1
Cooperation between local organizations through TWs Demand Capacity Demand Capacity Airport Airline Airport TWs own TWs own TWs own Negotiation Negotiation TWs approved between Airline & Departure Airport TWs approved between Airline & Arrival Airport Page: 2
Cooperation between local organizations through TWs Demand Capacity Demand Capacity ANSP ANSP Responsibility transfer area TWs own TWs own Negotiation TWs approved between two OCC neighbouring Page: 3
Global consolidation of TWs TWs approved between Airline & Departure Airport TWs approved between two OCC neighbouring TWs approved between two OCC neighbouring TWs approved between Airline & Arrival Airport Integration of known disruptions Negotiation TWs approved by all actors Page: 4
Iterative process for TW generation Long term TWs (1) TW Generator Long term AOC+Airport Slots Initial Business Trajectory Page: 5
Iterative process for TW generation Medium term TWs (1) Medium term TWs(1) TWs (1) TW Generator TWs (2) ANSP Sectors Long term AOC+Airport Slots Initial Business Trajectory Page: 6
Iterative process for TW generation Short term Short term TWs (2) TWs (1) TWs(2) Disruptions Medium term Long term AOC+Airport Slots Initial Business Trajectory TW Generator TWs(1) TWs (3) ANSP Sectors TWs (1) TWs (2) Page: 7
Basic principles of TW calculation Uncertainty Tolerances TW values Callsign Example uncertainty time window aircraft time envelope tolerance time window Target Window time min time i max time i min_time Target Window = max, max_time Target Window = min { min(time_acceptance ), min(aircraft_time_envelope) } { max(time_acceptance), max(aircraft_time_envelope) } time Page: 8
for TW model GLOBAL CONSTRAINTS Airline constraints Aircraft constraints Airport constraints Internal model constraints TW MODEL Sectors constraints System constraints Data modifiable by actors Signed TWs values Page: 9
Global constraints for TW model (1) Airline constraints Departure and Arrival time 4 Ideal of arrival hour H-15 min to H+5 min Linked to rotations and passengers transit (other flight) List of waypoints from Aircraft route Speed and Flight level values at some waypoints 4 optimum profile not hard constraint Destination airport (if change) Airport constraints Departure and arrival capacity 4 Meteorological constraints reduced capacity 4 Infrastructure constraints reduced capacity TTA (for SESAR, out of AMAN horizon) Geoposition (lat/long) Page: 10
Global constraints for TW model (3) Sector constraints Capacity Environmental constraints 4 meteorological constraints interval time restriction / area 4 military area constraints interval time restriction / area Paired level constraint 4 Odd FL constraint 4 Even FL constraint Altitude limits 4 lower altitude of sector in feet 4 upper altitude of sector in feet Boundary points geo position (lat/long) Sector boundary constraints / TW 4 No SUP TW near X nm from boundary sector (proposed X = 10 nm) 4 No SUP TW near X nm of crossing points Page: 11
Global constraints for TW model (1) Aircraft constraints Aircraft envelop data in normal conditions 4 MinOperational speeds (CAS, TAS and MACH) / FL 4 MaxOperational speeds (CAS, TAS and MACH) /FL Aircraft Performance data in normal conditions 4 maximum altitude 4 rate of climb (ROC) 4 rate of descent (ROD) Aircraft failure 4 max speed of the aircraft 4 max FL of the aircraft System constraints The safety issues, regarding the number of TW overlapping at the same time, same area, same FL 4 Minima Separation TWs constraints Signed TWs values for other flights Page: 12
Example of SUP TW overlapping T ij { φ} & S { φ} ij responsibility transfer plan P3 i SUP TW i min time i,time max [ ] i P2 j NW N NE P1 i CP i S ij P2 i P4 j W SW S SE E P3 j CP J SUP TW j min time j,time max [ ] j P4 i Callsign i P1j Callsign j Page: 13
TW modelling for the renegotiation phase Dynamic constraints integration modification TWs values not agreed CONSTRAINTS Flight with problem New FPL or Rerouting Airport constraints Sectors constraints Aircraft constraints System constraints Generation of TWs values for impacted flight Actors agreement Signed TWs values Status of constraints TWs values agreed Page: 14
Next steps Description of global TW model Integration of dynamic constraints in automatic TW generator which will be used for HIL3 Page: 15
Thanks for your attention! Page: 16