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- W2331552281 abstract "Seven fast-time numerical wake vortex prediction models are reviewed, compared against each other, and evaluated against observations obtained using pulsed and continuous wave lidar at several different airports. Assessment of the models is performed as a function of wake age, aircraft size, generator height, and environmental conditions. The purpose of this study is to assess the relative strengths and weaknesses and ranges of applicability of different fast-time wake vortex prediction models. An important finding of this study is that, over a large range of environmental conditions, the fast-time wake vortex models predict similar behavior in vortex trajectories and circulation intensity. Furthermore, evaluation of the models with lidar observations indicates that in this same range of environmental conditions, the models agree reasonably well with observations of wake vortex evolution. The largest spread in the model predictions occur when the ambient turbulence is weak. Importantly, these conditions correlate with the long-lasting wake vortex observations. Increasing stratification also increases the model spread. Unfortunately, there is a paucity of available high quality, in situ observations of environmental conditions coincident with wake vortex measurements. The lack of high quality data leads to ambiguity in ranking model performance. Assessment would be improved by a better quantification of the errors and uncertainties in the lidar observations, atmospheric conditions and aircraft parameters; and with more landings in different glide slope regions with high quality, in situ observations of environmental conditions." @default.
- W2331552281 created "2016-06-24" @default.
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- W2331552281 date "2011-06-14" @default.
- W2331552281 modified "2023-09-23" @default.
- W2331552281 title "Assessment of Fast-Time Wake Vortex Prediction Models using Pulsed and Continuous Wave Lidar Observations at Several Different Airports" @default.
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- W2331552281 doi "https://doi.org/10.2514/6.2011-3035" @default.
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