Vol. 32, issue 08, article # 2

Abstract:

In order to study the wake vortices of landing aircrafts, we carried out an experiment on the airfield of Tolmachevo Airport in 2018, which involved Stream Line lidar, AMK-03 sonic anemometer, and MTP-5 temperature profiler. The limits of applicability of the radial velocity method for estimation of wake vortix parameters from lidar measurements were determinied depending on the aircraft type and the wind turbulence strength. The analysis of the experimental results makes it possible to identify features of the spatial dynamics and evolution of aircraft wake vortices during different states of the surface air layer. In particular, it is found that in the case of low average crosswind speed and moderate wind turbulence, the lifetime of the vortex formed behind a landing large MD-11F aircraft can attain almost 4 min.

Keywords:

coherent Doppler lidar, aircraft wake vortices

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