Helicopter Wake Encounters in the Context of RECAT-EU

Jimenez-Garcia, A., Barakos, G.N. , Treve, V., Rooseleer, F., Cappellazzo, V. and Graham, R. (2017) Helicopter Wake Encounters in the Context of RECAT-EU. In: 43rd European Rotorcraft Forum, Milan, Italy, 12-15 Sep 2017,

148634.pdf - Accepted Version



This work presents a first attempt to apply the RECAT-EU (European Wake Turbulence Categorisation and Separation Minima) methodology of fixed-wing aircraft separation to helicopters. The approach is based on a classification of helicopters in categories using their rotor diameter and weight combined with wake comparisons between different classes of fixed-wing aircraft and helicopters. Where necessary the upset caused by a wake encounter to a simple helicopter model is used to establish safe separation distances. The work is based on a very limited amount of data for wake strengths but shows that the principles of the RECAT-EU methodology are directly applicable to helicopters at least for landing and take-off. This research calls for further measurements of helicopter wakes with modern methods so that the suggested separation distances can be further ascertained and ultimately refined allowing for better and safer integration of fixed and rotary-wing traffic at airports.

Item Type:Conference Proceedings
Glasgow Author(s) Enlighten ID:Barakos, Professor George and Cappellazzo, Mr Valerio and Jimenez Garcia, Mr Antonio
Authors: Jimenez-Garcia, A., Barakos, G.N., Treve, V., Rooseleer, F., Cappellazzo, V., and Graham, R.
College/School:College of Science and Engineering > School of Engineering > Autonomous Systems and Connectivity
Copyright Holders:Copyright © 2017 ERF
First Published:First published in the Proceedings of the 43rd European Rotorcraft Forum
Publisher Policy:Reproduced with the permission of the publisher

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