Performance evaluation of a multi-rotor unmanned agricultural aircraft system for chemical application

Hang Zhu, Hongze Li, Anderson P. Adam, Liujun Li, Lei Tian

Abstract


Unmanned agricultural aircraft system (UAAS) has been widely employed as a low-cost and reliable method to apply agrochemicals to small agricultural fields in China. The performance of battery-powered multirotor UAAS has attracted considerable attention from manufacturers and researchers. The objective of this research was to design a UAAS equipping with a data acquisition system, to characterize its chemical application performance based on droplet deposition data and optimize the operating parameters. Each test was repeated three times to assess the reliability of the spraying system. Various flight parameters were also evaluated. The optimal spray pressure for the XR8001 and XR8002 (TeeJet, Wheaton, IL, USA) nozzles was found to be 300 kPa, and the latter nozzle had a higher droplet deposition rate and spray volume. Spray volume was not significantly affected by the flight speed or droplet density, and was negatively correlated with the nozzle pressure. The results of this study provide a basis for improving the efficiency of UAAS chemical application systems in terms of large-scale application.
Keywords: spray characterization, unmanned agricultural aircraft system, aerial sprayer, onboard data acquisition system, effective swath width, flight parameters, chemical application, performance evaluation
DOI: 10.25165/j.ijabe.20211404.6194

Citation: Zhu H, Li H Z, Adam A P, Li L J, Tian L. Performance evaluation of a multi-rotor unmanned agricultural aircraft system for chemical application. Int J Agric & Biol Eng, 2021; 14(4): 43–52.

Keywords


spray characterization, unmanned agricultural aircraft system, aerial sprayer, onboard data acquisition system, effective swath width, flight parameters, chemical application, performance evaluation

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References


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