COMPARATIVE ANALYSIS OF THE IDLE MOVE LENGTH WHEN MAKING T-TURNS BY A MOUNTED MACHINE TRACTOR UNIT IN A FIELD OF IRREGULAR SHAPE

Abstract

The productivity of machine-tractor units depends on the length of the idle move performed in the headland. Analytical dependences for determining the length of the idle move when making T-turns by a machine-tractor unit with a mounted machine in a field of irregular shape have been specified in the article. Five types of T-turns have been considered in two variants – open turn and closed turn. Each of them is carried out in two directions of motion. A total of 20 variants of turns have been described. The methodology for determining the idle move length for a specific machine-tractor unit consisting of a tractor and a mounted row seeder has been demonstrated. It has been established that the idle move of the machine-tractor unit had the smallest length when the direction of making the turn is from right to left. For three of the studied turns, the idle move length in open and closed turns is the same when travelling from right to left. Right-to-left open and closed T-turns have been shown to provide the same idle move length of the unit in the headland, which is the smallest compared to the other turns.