Lavrinenko O. Foundation coulter seed drill parameters cultivator subsoil-spreading for sowing

Dissertation thesis is devoted to improving of sowing process for seed drills. Based on theoretical considerations, equations were presented to determine the change of seed speed within its movement on inclined cylindrical surface of seed tube. The reflection process (oblique impact) was described for the flat (prismatic) reflector-distributor. We determined the sufficient seed distribution on the seed-boot under random coefficients of air resistance and recovery and also evaluated optimal parameters of the prismatic reflector. With the aim to minimize energy spending we analytically defined the length and height below coulter in dependence on its geometric parameters and speed of seed drill. Coefficients of air resistance and recovery were determined experimentally and statistically described. Deviation of seeds trajectory after reflection was measured. Field researches of coulter allowed evaluating parameters of the prismatic reflector-distributor and confirmed its effectiveness