Hazard criteria for wake vortex encounters during approach

Airbus has prepared a methodology to assess the severity of a Wake Vortex Encounter (WVE). This methodology is called Vortex Encounter Severity Assessment (VESA). VESA makes it possible to compare the effect of wake vortices generated by different aircraft on an aircraft that encounters such a vortex. ant elements of VESA are the hazard criteria that rate particular aircraft reactions during WVEs. Hazard criteria are necessary to compare WVEs in batch simulations. This paper describes how piloted flight simulations for WVE investigations during landing approach were prepared and how the results were used for hazard criteria development. This work was part of the European S-WAKE program.