Air Ground Cooperation Summary

27 June 2003 ATM 2003 Budapest, June Rapporteur: W. Post AGC Sessions: Tuesday s Session 1: 2 papersChair:A. Haraldsdottir Wednesday s session 2: 3 papersS. Green s session 3: 2 papersA. Haraldsdottir Thursday s Session 4: 3 papersF. Casaux s Session 5: 2 papers “ s Session 6: 2 papers “

27 June 2003 ATM 2003 Budapest, June Scope overview Subjects (paper nrs): Conceptual papers (106, 112, 115, 36) Co-operative (arrival) spacing (56, 77, 97, 99, 102) Conflict Management (14, 17, 40) Aircraft Intent (55) Delay cause and propagation (91) Also relevant: (9)

27 June 2003 ATM 2003 Budapest, June Conceptual papers (106, 112, 115) Overall ATM s Layered ATM system (Villiers, now 35 years ago!) s Scope of layers needs to be optimised –task, time and geographical scope –Planning vs. flexible and adaptive control s Main theme: –4D (Flow and complexity) and 3D (separation) –How to make both modes interoperable –Supersector: More ATCos in sectors s Conceptual; no results

27 June 2003 ATM 2003 Budapest, June Conceptual papers (36) Working in the Ops Room s creative approach to redesigning the working environment of the ATCO, borrowing from other disciplines like music and theatre. s so far mainly applied to Ops room aspects. s challenge is to apply it also to the process of ATM service delivery.

27 June 2003 ATM 2003 Budapest, June Co-operative arrival spacing (56,97,99) s final approach application [56] –using speed guidance for pilot –time based, ADS-B technology s Arrival Operations –ground based (trying to improve DAG-TM CE6) [97] –4D Trajectory based; advanced tools –suggested to complement with ADS-B based relative approach –Comparing free manoeuvring, mixed equipage (CE5) and trajectory negotiation (CE6) with baseline [99] –both better than baseline; conditions tested did not reveal differences between CE5 & CE6

27 June 2003 ATM 2003 Budapest, June Co-operative spacing (77,102) Control laws oriented s Time based or distance based separation s Anticipating ADS-B data of leading aircraft s Still need to cover ‘train’ of aircraft

27 June 2003 ATM 2003 Budapest, June Conflict Management (14, 17, 40) Free manoeuvring, mixed equipage (CE5) s designing a safe concept –Recovery after loss of separation [14] –Collision avoidance rather than conflict management? –Constrained scenario –need for priority rules [40] –meeting RTA while separating under constraints [17] s Pilot should not fall back on ATCO if things get bad s Can results contribute to collision risk analysis? s Benefits need be made clearer

27 June 2003 ATM 2003 Budapest, June Aircraft Intent (55) How much, for whom and when s Measured by looking at benefit to separation assurance process (CD&R) –Ground based responsibility –Air based responsibility s 10 minutes aircraft intent felt most useful s Intent has positive effect on flight efficiency

27 June 2003 ATM 2003 Budapest, June Delay cause & propagation (91) En-route delay s Historic flight data. s Propagation back from airports. s Some 30% of delays not attributable to airport problems.

27 June 2003 ATM 2003 Budapest, June Conclusion Trying to find the best of 3D and 4D s Neither one solves the whole future ATM problem. s R&D streams are getting closer together. s Challenges of interoperation. s Waiting for the right step forward. Read the papers