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

Author

Listed:
  • Volodymyr Bulgakov

    (Department of Mechanics, Faculty of Construction and Design, National University of Life and Environmental Sciences of Ukraine, 03041 Kyiv, Ukraine)

  • Simone Pascuzzi

    (Department of Agricultural and Environmental Science, University of Bari Aldo Moro, 70126 Bari, Italy)

  • Hristo Beloev

    (Department of Agricultural Machinery, University of Ruse “Angel Kanchev”, Studentska 8, POB7017 Ruse, Bulgaria)

  • Semjons Ivanovs

    (Faculty of Engineering, Latvia University of Life Sciences and Technologies, LV-2130 Jelgava, Latvia)

Abstract

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, the obtained equations allowed a numerical simulation in order to evaluate the headland turning agility of this implement-and-tractor aggregate. The minimal radii 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.

Suggested Citation

  • Volodymyr Bulgakov & Simone Pascuzzi & Hristo Beloev & Semjons Ivanovs, 2019. "Theoretical Investigations of the Headland Turning Agility of a Trailed Asymmetric Implement-and-Tractor Aggregate," Agriculture, MDPI, vol. 9(10), pages 1-11, October.
    • Handle: RePEc:gam:jagris:v:9:y:2019:i:10:p:224-:d:277060
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    References listed on IDEAS

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    1. Volodymyr Bulgakov & Simone Pascuzzi & Volodymyr Nadykto & Semjons Ivanovs, 2018. "A Mathematical Model of the Plane-Parallel Movement of an Asymmetric Machine-and-Tractor Aggregate," Agriculture, MDPI, vol. 8(10), pages 1-15, October.
    2. Volodymyr Bulgakov & Simone Pascuzzi & Francesco Santoro & Alexandros Sotirios Anifantis, 2018. "Mathematical Model of the Plane-Parallel Movement of the Self-Propelled Root-Harvesting Machine," Sustainability, MDPI, vol. 10(10), pages 1-11, October.
    3. Volodymyr Bulgakov & Simone Pascuzzi & Valerii Adamchuk & Volodymyr Kuvachov & Ladislav Nozdrovicky, 2019. "Theoretical Study of Transverse Offsets of Wide Span Tractor Working Implements and Their Influence on Damage to Row Crops," Agriculture, MDPI, vol. 9(7), pages 1-10, July.
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    Cited by:

    1. Marek Boryga & Paweł Kołodziej & Krzysztof Gołacki, 2020. "Application of Polynomial Transition Curves for Trajectory Planning on the Headlands," Agriculture, MDPI, vol. 10(5), pages 1-16, May.
    2. Simone Pascuzzi & Alexandros Sotirios Anifantis & Francesco Santoro, 2020. "The Concept of a Compact Profile Agricultural Tractor Suitable for Use on Specialised Tree Crops," Agriculture, MDPI, vol. 10(4), pages 1-10, April.
    3. Volodymyr Bulgakov & Simone Pascuzzi & Semjons Ivanovs & Francesco Santoro & Alexandros Sotirios Anifantis & Ievhen Ihnatiev, 2020. "Performance Assessment of Front-Mounted Beet Topper Machine for Biomass Harvesting," Energies, MDPI, vol. 13(14), pages 1-12, July.
    4. Simone Pascuzzi & Volodymyr Bulgakov & Francesco Santoro & Alexandros Sotirios Anifantis & Semjons Ivanovs & Ivan Holovach, 2020. "A Study on the Drift of Spray Droplets Dipped in Airflows with Different Directions," Sustainability, MDPI, vol. 12(11), pages 1-15, June.

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