Shinde, G.U.Rathod, Pornima Digambar2022-09-092022-09-092022-02-1022014https://krishikosh.egranth.ac.in/handle/1/5810187511An agricultural spraying drone was developed for better spray deposition and efficiency of fertilizer application in field. A multi rotor quad copter spraying drone of 10 lit capacities tank was selected for performance evaluation in wheat, chickpea, brinjal, and turmeric crops field available at Vasantrao Naik Marathwada Krishi Vidhyapeeth, Parbhani campus. Computer-Aided Engineering analysis in ANSYS R1 2021 software domain of three flat fan nozzles (N1, N2, and N3) of different orifice sizes as 1050 mm, 1150 mm, and 1340 mm was done for selection of suitable nozzle for spraying operation is completed at National Agricultural Higher Education Project Centre of Advanced Agricultural Science and technology-DFSRDA, Vasantrao Naik Marathwada Krishi Vidhyapeeth centre. Performance evaluation of spraying drone after the selection of suitable orifice size and operating parameters of nozzles were analyzed under structural and Computational Fluid Dynamics analysis at different forces (0.1 N, 0.2 N, and 0.3 N) and flow velocity (5 m/s). The field trials after Computer-Aided Engineering analysis were conducted for performance evaluation and the CAE-diagnostics validation for its optimization. From optimization of three nozzles: one nozzle N3 (1340 mm orifice size) were selected form structural analysis. CFD analysis continue for nozzle N3 at velocity 5 m/s. CFD analysis procedures has three parts pre-processing, solving and post-processing. For wheat, chickpea, brinjal and turmeric crops, the average field capacity of the drone mounted sprayer were found to be 1.5 ha/h, 1.57 ha/h, 1.53 ha/h and 1.52 ha/h respectively, at a forward speed of 5 m/s and height of 1 m distance spray.EnglishThesis