Calculul traiectoriei de zbor a seminței prin tubul de conducere modernizat

Abstract

One of the factors that disrupt the normal functioning of the technological process of the seed drill when the working speed exceeds 9 km/h is the long travel distance of the seeds through the seed tube. This issue is most noticeable when sowing cereal crops, where the distribution system must ensure forced seed delivery to the bottom of the furrow. The paper presents a mathematical model of seed movement through the modernized delivery tube, aimed at improving the uniformity of seed distribution in the furrow. The study highlights the influence of air resistance and repeated collisions with the inner walls of the tube on the trajectory and velocity of the seeds. Parametric equations of motion were formulated, describing both the ricochet of the seed from the tube wall and its flight trajectory until exiting the tube. The results show that the seed exit velocity is approximately 1.73 m/s, and the flight distance is about 910–912 mm, regardless of the initial entry height into the delivery tube. The importance of using a pressurized airflow is also emphasized, as it reduces transport time and stabilizes the seed flow, enabling an increase in the technological working speed when sowing cereal crops.