The use of vortex generators to improve the take-off and landing characteristics of transport category aircraft

The issue of using vortex generators to improve the take-off and landing characteristics a transport category aircraft has been considered. Three directions have analyzed. first: installation on nacelles main engines increase maximum value lift coefficient in modes. second: upper surface flap lifting wing by improving flow around flap. third: tail unit efficiency control surfaces reducing handling speeds. Examples use each are given. It is shown that improvement aerodynamic possible presence separation boundaries flight operating modes elimination these zones installing generators. results computational studies, experiments wind tunnels, as well data from tests an experimental confirming effectiveness presented. concept increasing their stability places with velocity proposed. Considering this concept, new locations for flap, fin repeated selected. involves rudder reduce possibilities optimizing parameters Recommendations given choice shape, size, angles installation, depending tasks solved help considering drag installation.