TY JOUR TI CONTACTLESS DIRECTION FINDERAND THE OBJECT'S ROTATION SPEED KW vortex motion KW pressure KW gap KW velocity KW flow KW radial forces KW viscous friction forces KW Magnus effect JO Modern Technologies and Scientific and Technological Progress AU Cherepanov, A.P. PY 2025 IS 2025 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»