TY JOUR TI Analysis of Particle Motion in Wall-Free Concentrated Vortexes in Relation to Flight Safety Problem KW flight safety KW vortex flows KW particles motion in wall-free vortexes KW ingestion in aircraft engines. JO Safety in Technosphere AU Varaksin, A.Y. AU Protasov, M.. PY 2014 IS 3 PB INFRA-M Academic Publishing LLC.