With the arrival of many required parts as well as a realization that pipe sizing is different from tube sizing, the spray boom has now been completed. It consists of a 1/2″ aluminum pipe with two 3/8″ holes drilled that allow two TeeJet nozzle bodies to clamp on to the boom. There is a cap at the end of the pipe as well as an adapter that connects the 1/2″ pipe to a 1/4″ NPT fitting at the end of a 5′ flexible pvc hose. During our first test flight with the spray system attached, we discovered that the spray boom sways too much and interferes with the flight of the drone. To fix this, we’re using a shorter flexible PVC tube and a much longer rigid aluminum pipe. We also have another plan to reduce the weight of the spray boom. The 1/2″ aluminum pipe has an actual outside diameter of .84″ and has relatively thick walls compared to 1/2″ aluminum tube (not pipe). We connect a few feet of aluminum tubing to a short length of PVC tubing and connect the aluminum pipe assembly at the end of the tube.
HASMAAD:High Accuracy Spraying Multirotor Autonomous Agricultural Drone
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