Unmanned aerial application systems (UAAS) have recently gained momentum for the application of crop protection (CP) products. Due to their high operational efficiency, mobility, and low cost, UAAS may be perceived as a more viable option for spray application when compared to conventional application techniques, especially backpack/knapsack sprayers. However, being a relatively new technology and not a common practice in the USA, there are no best management practices or guidelines for testing UAAS spray performance. Therefore, this study was undertaken to assess the impact of different attributes pertinent to UAAS flight (e.g., altitude, speed, etc.), application (e.g., droplet size, tank additive, etc.), and UAAS design (e.g., nozzle placement relative to a the rotor) on spray performance. The spray performance was evaluated in terms of swath and spray drift (ground and airborne) using water-sensitive papers (WSP) and mylar card/string samplers, respectively. The samplers were respectively analyzed using image processing and fluorometry techniques. The different treatments under study were UAAS type (MG-1P and AG V6A+), flight altitude (1.5, 2.5, and 4.0 m) and speed (2 and 3 ms−1), and nozzle type (XR11001 and XR8002 flat fan nozzles) with different droplet volume median diameter (VMD) at ~207 kPa (very fine [140 µm] and fine [196 µm], respectively). The results indicated a highly variable swath for both platform types. While nozzles under each rotor may be a common design in commercial UAAS, the results indicated that placement of nozzles out on a boom might have a less variable swath and a lower drift potential. In addition, flying slower, using a relatively larger droplet VMD (i.e., 196 µm at ~207 kPa) may reduce both ground and airborne drift. This study may serve as a guideline for growers/operators to evaluate their UAAS platforms and optimize key attributes pertinent to UAAS operation for effective spraying.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Understanding Spray Attributes of Commercial UAAS as Impacted by Operational and Design Parameters


    Beteiligte:
    Rajeev Sinha (Autor:in) / Jeffrey Johnson (Autor:in) / Kiley Power (Autor:in) / Aaron Moodie (Autor:in) / Emily Warhurst (Autor:in) / Roberto Barbosa (Autor:in)


    Erscheinungsdatum :

    2022




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Unbekannt




    Commercial Airline Operational Control

    Qualley, W. L. / American Meteorological Society | British Library Conference Proceedings | 1995


    Impact of Operational and Environmental Aspects on Commercial Aircraft Design

    Haberland, C. / Kranz, O. / Stoer, R. | British Library Online Contents | 1994


    Impact of Operational and Environmental Aspects on Commercial Aircraft Design

    Haberland, C. / Kranz, O. / Stoer, R. et al. | British Library Conference Proceedings | 1994



    Thermal spray for commercial shipbuilding

    Rogers, F.S. | Tema Archiv | 1997