Update to the USDA ARS Aerial Spray Nozzle

Update to the USDA ARS Aerial Spray Nozzle Models Brad Fritz, Clint Hoffmann, Phil Jank USDA ARS Aerial Application Technology Research Group College Station, Texas

Why Update the Models? • Updated Measurement System – Sympatec instead of PMS • New High Speed Wind tunnel – Speed increased 160 mph → 180+ mph • Increased operational ranges – Pressure – 60 → 90 psi – Airspeed – 160 → 180 mph – Orientation angle – 20° → 45° (SS nozzles) • CP 11 TT with FF tips not included in the current models • Current models → Spraying System FFs

Nozzles and Settings • Nozzles Included: – CP 11 TT 20, 40 and 80° FF – CP 03 and CP 09 – Steel and Ceramic Disc Core 45 – Standard Spraying Systems 40 and 80° FF – CP 11 TT Straight Stream – Disc Core Straight Stream – Davidon Tri. Set

Nozzles and Settings in New Models • Only Fixed-Wing updated this year – Rotary-Wing models – end of 2015 • Excel Interface Updated – All nozzles in single Excel File • Smartphone apps being updated. – High / Low Speed vs Fixed / Rotary Wing • Low Speed < 120 mph • High Speed >120 mph – New “Choose Solution”

New Model Format

New Model Format

Understanding Each Nozzle • Each nozzle can be operated at a large number of unique combinations of: – Orifice Size – Pressure – Orientation Angle – Airspeed • Where do you start?

Airspeed FIN E SE Deflection Angle 0° M ME DIU CO AR Pressure Orifice #15

FIN E DIU M 0° ME CO AR SE #12 #15 15°

FINER Airspeed COARSER Deflection Angle COARSER FINER Pressure Orifice

Standard 80° Flat Fan

CP 11 TT Straight Stream

Where to Get Them • Will be posted to the NAAA website. – A big Thanks to NAAA for hosting these. • Apple and Google Play Store Apps – Search “Aerial Sprays” • Visual Guides Available Soon