Operational Concepts


PHARE Demonstration 1

PHARE Demonstration 1 was a real-time simulation of en-route airspace comprising a Baseline and two Advanced organisations. The major concepts which characterise the different PHARE Demonstration 1 organisations were as follows:-
  • the introduction of advanced computer assistance tools to assist the Planning Controller with his task of planning conflict free trajectories through his sector;
  • increasing use of datalink functionality and the resulting increased information content.
Picture of PHARE Demonstration 1 Planning Controller role for ORG1 
PHARE Demonstration 1 Planning Controller role for ORG1 (Click for a larger image)  
The environment was en-route airspace in the timescale circa 2000 simulating several en-route sectors and emulating entry and exit conditions at TMA sectors. PHARE Demonstration 1 simulated a two-man sector operation applied to the NERC sectors 10 and 11. Each sector had a Tactical Controller (TC) and a Planning Controller (PC).

It was envisaged that the controller's basic roles of planner and tactical would not be subject to major changes but assistance would be provided in terms of "computer assistance tools" and datalink. The new elements supported the definition of a new control method, based on “current” practices, but improved and adapted to provide advanced planning facilities for the Planning Controller and datalink clearances for 4D equipped aircraft.

It was this advanced planning capability that was expected to lead to increased capacity. The fact that ATC was performed in a similar manner to “today's” operation (i.e. maintaining the basic roles of planner and tactical together with the same sectorisation) considerably reduced the number of options to be considered.

There were no paper flight strips, the information that is normally held on the flight strips was presented to the controllers electronically using various Human Machine Interface techniques.

PHARE Demonstration 2

 The PHARE Demonstration 2 ETMA
  The PHARE Demonstration 2 ETMA (Click for a larger image)
PHARE Demonstration 2 was a real-time simulation focussed on the management arrival traffic in an Extended TMA (a Terminal Manoeuvring Area with its adjacent en-route sectors) in a post 2000 timeframe comprising a Baseline and two Advanced organisations.

The concept assumed that the controller working procedures, the working environment and the airspace structure would have no major differences to the existing system. The planning and control procedures would still be based on “current” ATC practices and the human functions of ‘planning’ and ‘tactical’ control were assumed to remain sector-based in PHARE Demonstration 2.

The specific objectives of the PHARE Demonstration 2 trials were:

1. To assess controller workload and performance of arrival traffic handling in an ETMA environment with
  • introduction of computer assistance,
  • computer generated 4D profile-planning and sequencing,
  • controller support to plan and establish a conflict free trajectory covering all flight phases from Entry Fix to the Approach Gate of an airport,
  • an increasing proportion of 4D Flight Management System equipped aircraft with full two-way datalink.
2. To gain a degree of controller acceptance for the introduction of computer assistance.

PHARE Demonstration 3

PHARE Demonstration 3 was a real-time simulation comprising two organisations; Baseline and Advanced.

The baseline organisation was a reference close to the current operational situation. The Advanced Organisation was characterised by the following concepts:
  • human centred approach for automation;
  • multi-sector environment;
  • traffic organisation and 4D trajectory negotiation.
PHARE Demonstration 3 multi-sector planning configuration 
PHARE Demonstration 3 multi-sector planning configuration (Click for a larger image)  
The aim of the PHARE Demonstration 3 programme was to design a scenario for an air traffic environment within the core area of Europe, with potential for a significant capacity increase over that of the present air traffic system while benefiting airline operators with more economical flights.

The concept was that extra capacity would be found with the introduction of new flight management and precision navigation systems, data-link communication, multi-layer planning techniques, and advanced ATC tools to improve air traffic management. The integration of these developments into a single air-ground entity, while retaining the decisive roles of Air Traffic Controllers and Pilots was a prime objective of the PHARE Demonstration 3 Advanced Organisation.

The advanced operational scenario proposed concepts for the time period from 2005 to 2015 when the traffic mix will progressively comprise a population of 4D equipped aircraft, increasing to a significant ratio: estimated at around 70% equipped aircraft.

For further information

The PHARE Demonstration 1 Operational Concept is documented in the following:
  Acrobat 94-70-02 PD/1 Operational Specification142 Kb
  Acrobat 94-70-28 PD/1 Operational Scenarios101 Kb
The PHARE Demonstration 2 Operational Concept is documented in the following:
  Acrobat 95-70-11 PD/2 Operational Scenarios171 Kb
The PHARE Demonstration 3 Operational Concept is documented in the following:
  Acrobat 95-70-02 PD/3 Demonstration Operational Specification175 Kb
  Acrobat 97-70-04 PD/3 Operational Scenarios Document (Volume 1)279 Kb
  Acrobat 97-70-08 Operational Scenarios Document (Volume 2)303 Kb