Aymeric Trzmiel

• Engineer at European Organisation For The Safety Of Air Navigation

In this note, we show how the "double" Point Merge arrival sequencing technique, initially developed to provide a large delay absorption capacity in a small area, can also enable more continuous descents. Our motivation is to reduce level-offs and improve flight efficiency. Although still at an early stage, this work may already be of interest to o...

The present document is intended as an introduction to Point Merge, providing an overview of the technique, its main principles, benefits/constraints and most salient implementation guidelines. It does however not replace EUROCONTROL’s Point Merge reference document, which the reader is referred to for more details.

This paper investigates the theoretical feasibility of controlling arrival airborne delays by acting on ground delays at departure airports, with the aim to reduce CO2 emissions. One challenge lies in the decision making to trigger ground delays few hours in advance under uncertainties in airborne delays prediction and during flight execution. We p...

This paper presents a study aiming at predicting the arrival delays occurring in the terminal area up to five hours in advance. The motivation for the participating airlines is to better take into account the impact of weather at destination on fuel planning. Due to the uncertainty at these time horizons, we decided to consider delay intervals (low...

This paper presents an analysis of the sequencing of arrival flights at three European airports (Frankfurt Main, London Heathrow and Madrid Barajas) during peak periods with more than 24000 aircraft pairs. The underlying motivation was to better understand and characterise how sequencing is performed in dense and complex environments. The analysis,...

This paper proposes a novel approach to understand and characterise the sequencing of arrivals. The proposed approach, essentially data driven, relies on the analysis of the spacing evolution over time between consecutive aircraft. As a case study, it was applied to different sequencing techniques (a baseline and two new ones) in the same approach...

This report presents a series of simulations on Point Merge, a new method for merging arrival flows with existing technology. It shows how Point Merge can be adapted to various typical terminal airspace configurations with benefits in terms of staffing (standardisation of working methods), predictability (extensive use of lateral flight management...

This paper reports on an experiment conducted with airline pilots on a full flight simulator. The objective was a) to confirm the feas ibility of airborne spacing with speed and lateral managed modes and b) to assess the compatibility of airborne spacing and continuous descent approach (CDA). The overall feedback was globally positive and consisten...

This paper presents a method to merge arrival flows of aircraft without using heading instructions. The principle is to achieve the aircraft sequence on a point with conventional direct-to instructions, using predefined legs at iso-distance to this point for path shortening or stretching. A series of small-scale experiments was conducted with air t...

This paper reports on a series of small-scale experiments conducted with air traffic controllers. The objective was to assess benefits and limits of a method to integrate aircraft flows in the terminal area. The principle is to achieve the aircraft sequence on a point (with conventional direct-to instructions) using predefined legs at iso-distance...