The New Model for Air Traffic Control



The New Model Single Sector Demonstrator


This page offers the user a working single sector simulator illustrating the New Model Operational Concept. The user interface of the demonstrator is not fully robust due to its dependence on the VBA environment. Please follow the instructions in the User Guide or the Quick Start Guide carefully.



Nothing was ever created by two men. There are no good collaborations whether in music, in art, in poetry, in mathematics, in philosophy. Once the miracle of creation has taken place, the group can build and extend it, but the group never invents anything. The preciousness lies in the lonely mind of a man.

John Steinbeck, East of Eden



The New Model has an extremely simple user interface. The screen display for the demonstrator is illustrated below. Click on this image to see a higher resolution image in a new window. The image is 102KB and should take about 20 seconds over dial-up or 3 to 4 seconds over basic broadband.


Click to Open a Full Size Image in a New Window


The Screen Display of the New Model Single Sector Demonstrator

Please refer to the User Guide for a description of the display or download the workbook and open the Quick Start Guide for instructions. In order to be accessible to a wide range of users this demonstrator is offered as an Excel Workbook with macros written in Visual Basic for Applications (VBA). These macros have no hidden purpose and do not attempt to write to, or modify the user’s machine or software in any way. Before uploading the file was scanned using Norton AntiVirus 2003 with virus definitions dated 3rd June 2005.

The demonstrator is capable of exchanging co-ordination data in an inter-operating network but no support is currently offered for this configuration.

Right click on the links below and then select ‘Save Target As …’ to download the particular item. System requirements are detailed in the User Guide.

Demonstrator Workbook Download (1.2 MB)

You MUST download this file. It will not run directly from this web page.

User Guide Download (84 KB)

Open the Quick Start Guide in a New Window


Configured Scenarios

The Demonstrator is set up to run either one of two traffic scenarios. The scenario can be selected by the user during the start up sequence. The two scenario indices are 84 and 114. Selection of any other index is not supported and may lead to unpredictable or unstable results.

A fuller description of the scenarios can be found in the User Guide.

Scenario Index 84

This scenario deals with a high traffic load and shows how the New Model Concept works under normal circumstances.

Scenario Index 114

This scenario shows how the New Model Concept deals with a situation where a loss of separation is predicted to occur and where the controller does not take any action.

The BCS SGAI Machine Intelligence Competition 2004

In December 2004 the New Model was entered for the Machine Intelligence Competition as part of the British Computer Society’s Special Interest Group in Artificial Intelligence (BCS SGAI) Annual Conference. It was placed third out of five presenters and eight entries in total. Read about this significant competition which was held at Queen’s College Cambridge. Follow the links below to find details of the 2004 competition and its results.

Link to the BCS SGAI Competition 2005

Link to the Competition Sponsors: Electrolux

Link to the Applied Knowledge Research Institute AKRI

A number of letters from the author have appeared in print. Subscribers to the weekly journal FLIGHT INTERNATIONAL can read about two of them on the website:

Flight International Electronic Version Letters 13th July 2004

Registered users with the Electronic DAILY TELEGRAPH can read a letter advocating a move towards a new approach at:

Daily Telegraph Electronic Version Letters 7th June 2004



Analysts typically recorded the requirements in documents that ran to hundreds, sometimes thousands of pages. But it is absurd to believe that the human mind can come up with a consistent and relevant list of thousands of requirements in the form ‘the system shall....’ What’s more these requirement specifications did not readily transform into design and implementation specifications.

Jacobson, Booch, Rumbaugh, The Unified Software Development Process


One major European specification for a Flight Data Processing System ran to over 250 pages, contained nearly 1,050 requirements and had 65 references to optimisation.

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