21st Congress of International Council of the Aeronautical Sciences, Melbourne, Australia, 13-18 September, 1998
Paper ICAS-98-6.5.1

AIRCRAFT VORTEX WAKE, FLIGHT SAFETY AND CRISIS OF AIRPORTS

Vyshinsky V. V.
TsAGI, Russia

Keywords: aircraft vortex wake, flight safety, airport crisis

In the framework of computational and experimental methods, the problem is solved on improving airport capacity. For this purpose a two-level aerodynamic wake model was developed as well as models intended for studying the problems of flight dynamics, structural strength and aero elasticity. The element of stochasticity inherent in the phenomenon under study is incorporated into the combined model through the two last models. The mathematical models are combined into a single structure, which enables their using to assess hazardous situations associated with vortex wake encounters of aircraft, to construct criteria to judge as reliably as possible the severity of the vortex hazard in landing, to determine the relationship between the probability of accidents and main parameters of both leading and following aircraft, weather conditions in the airport area and distances between aircraft, to work out recommendations on timely detection of vortex wakes and pilot actions to execute a vortex avoidance maneuver and on establishing safe-separation standards.

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