Abstract
To mitigate the risk of wake vortex encounters during final approach, so-called plate lines have been developed. Data collected during a six-month measurement campaign at Vienna International Airport are used to assess the potential for reducing minimum aircraft separations facilitated by plate lines during approach and landing following the re-categorisation (RECAT-EU) methodology for revised wake turbulence categorisation. To ensure that no other parameters controlling wake vortex decay bias the analysis, it is verified that wind speed, atmospheric turbulence, thermal stratification and flight altitude reside in similar ranges with and without the plates. The analysis follows the steps of the RECAT-EU method to generate non-dimensional so-called reasonable worst-case circulation decay curves; one as a reference for nominal operations without plates and one representing the accelerated wake vortex decay brought about by the plate lines. The difference between the two circulation decay curves corresponds to the non-dimensional time-based aircraft separation reduction potential that can be translated into distance-based separation gains. Depending on the particular RECAT-EU category combination, the attained aircraft separation reduction potential ranges between 12% and 15%. Constricting the analysis to wake vortices generated by one aircraft type representing the Upper Heavy RECAT-EU category, the separation reduction potential amounts up to 24%.
Funder
Deutsches Zentrum für Luft- und Raumfahrt
Horizon 2020 Framework Programme
Publisher
Cambridge University Press (CUP)
Reference63 articles.
1. Elsenaar, B. , van der Geest, P. , Speijker, L. , de Bruin, A. , Wolf, S. , Braun, N. , … Jacquin, L. (2006). Wake vortex research needs for ‘improved wake vortex separation ruling’ and ‘reduced wake signatures’. Part II, Specialist's Reports, Final Report of the Thematic Network ‘WakeNet2-Europe’, 6th Framework Programme Wakenet.
2. Numerical Optimization of Plate-Line Design for Enhanced Wake-Vortex Decay
3. Effects of Surface Roughness and Patterns on a Surface-Approaching Pair of Aircraft Wake Vortices
4. Active-Control System for Breakup of Airplane Trailing Vortices
5. Analysis of potential wake vortex encounters at a major European airport
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献