Slip sinkage as one of the performance factors of a model pneumatic-tyred vehicle

R -(3 n) (n + 1) where z--wheel sinkage, cm b =width of the wheel's ground contact area, cm /=length of the wheel's ground contact area, cm D =diameter of the wheel, cm W =load acting upon the soil, kg K =slip coefficient of soft, cm s [ (V, Ira)/Vt] 100% = slip of the wheel n =dimensionless exponent of soil strength V,, Vo--(respoctively) theoretical and actual velocity of the wheel, m/sec 9 = angle of soil friction, deg c=cohesion of soil, kg/cm"