The Hypothesis The results of a recent herbicide deposition study performed with the DJI T100 led us to observe that after ~13 m/s, swath width and drift were no longer directly related to travel speed; They appeared unaffected. The result was completely unexpected as it was counter to several years of prior study with smaller […]
Read More… from The Carvalho Boom and the Stages of Quadcopter Flight
Air-assisted boom sprayers have been around since the 70s. More common in Europe than North America, they have demonstrated value in mitigating drift and improving canopy penetration. The majority of air-assist systems are found on three-point-hitch or trailed sprayers, which is fine (and perhaps even preferable) as long as clearance, travel speed and acreage aren’t […]
If you read this site, you know we’re fans of recirculating booms. We love them for three reasons: If you’re new to the concept of recirculating booms, read more here. Until recently, these booms were only available on sprayers imported from outside North America (Horsch, Amazone, Agrifac to mention three), or via France’s Pommier booms […]
There’s a lot of talk about lowering the boom to reduce drift and make twin fan nozzles more effective. But how low can we actually go with a boom before striping becomes a problem? We’ve done some calculating and have come up with answers. First, a few guidelines. Tapered flat fan nozzles require overlap to […]
Use this spreadsheet to calculate the minimum boom heights needed for various applications. Some caution: The values are theoretical and assume the fan angles are accurate. Some nozzles don’t produce the advertised fan angle. Enter your actual angle in the spreadsheet The theory assumes that the droplets at the edge of the fan always move […]