TY JOUR TI Fuel profitability of forest cars(machines) KW fuel economy KW aerodynamics KW drag coefficient KW air resistance KW fairing KW roadtrain JO Actual directions of scientific researches of the XXI century: theory and practice AU Chudov, V.. AU Timonin, E.. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov