Theoretical Investigations of the Headland Turning Agility of a Trailed Asymmetric Implement-and-Tractor Aggregate

Theoretical Investigations of the Headland Turning Agility of a Trailed Asymmetric Implement-and-Tractor Aggregate

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Turning time occupies a significant part of the operations carried out by implement-and-tractor aggregates, especially in fields with short runs.Incorrectly executed turns increase the width of the turning strips, significantly increasing the idle path of the implement-and-tractor aggregate, with negative effect on its efficiency.The objective of this paper was to theoretically analyse the turning agility of an asymmetric implement-and-tractor aggregate, taking into account its forward speed and design parameters.

Considering a trailed asymmetric swath reaper and tractor aggregate, Wire Loops the obtained equations allowed a numerical simulation in order to evaluate the headland turning agility of this implement-and-tractor aggregate.The minimal radii Girls Wetsuits of the trailed asymmetric swath reaper and tractor aggregate are, respectively, 8.33 m for right-side turn and 4.

90 m for left-side turn.Furthermore, the optimal angle between the longitudinal axis of the aggregating tractor and the hitch bar of the trailed asymmetric implement exists only in the case of left-side U-turns and its value is 1.12 rad (64°).

It is not possible to cover right-side U-turns or both right- and left-side pear-shaped loop-turn in the optimal mode.