The analysis, purely data driven, relies on two existing indicators of proximity and dynamicity – a three dimensional ellipse distance and the corresponding closure time – in combination with the additional flying time representing the level of congestion. The analysis considers 40000 arrival flights in total, in an area of 60NM around each airport. The analysis aims at assessing the exposure to small distance and small closure time (below 2 times the separation and 2 minutes). The main results are: (1) overall duration of exposure in the order of 3.4min for distance and 3.9min for closure time (per 10min, 95% percentile); (2) differences among the airports for similar levels of congestion by a factor of 3 for distance and 2 for closure time (additional time in 0-5min); and (3) increase with the level of congestion for some airports by a factor of 2 for distance and 1.5 for closure time (additional time from 0 to 5min). Future work will involve identifying the causes of the differences observed among the airports, as well as extracting and analyzing the traffic patterns with close proximity and high dynamicity. It will also involve extending the analysis to all flows in the area.
Proximity versus dynamicity: an initial analysis at four European airports
This paper presents an initial analysis of proximity and dynamicity aspects between arrival flights at four major European airports representative of different types of operations.