The spinning pins nozzle: a new controlled droplet applicator for aircraft

Patent

Craig, Ian. 2003. The spinning pins nozzle: a new controlled droplet applicator for aircraft. Patent Application No. 779967
Title

The spinning pins nozzle: a new controlled droplet applicator for aircraft

TypePatent
Authors
AuthorCraig, Ian
Patent/Trademark ApplicantIan P. Craig
Patent/Trademark NumberPatent Application No. 779967
Countries in Which Patented/TrademarkedAustralia
Number of Pages9
Year2003
Abstract

This information relates to improvements in devices for delivery of spray droplets from aircraft or ground vehicle.
The application of pesticide using aircraft remains a vital part of modern agricultural systems, but the problem of associated off-target transport or spray drift is receiving increasing attention. Research carried out by Craig et al 1998a has demonstrated that spray drift depends upon the size of droplets in the spray and also the width of the droplet size distribution or spectrum. Buffer distances of several hundred metres are often required to reduce aircraft spray drift deposition to acceptable levels. Such large distances are inconvenient and uneconomical in most cropping situations. The present approach is to significantly reduce spray drift by developing a new nozzle which utilises large droplet Controlled Droplet Application (CDA) technology. This would produce a spray with a narrow droplet size distribution and reduce the number of driftable fines, and also the number of excessively coarse droplets which constitute waste.

KeywordsControlled Droplet Application (CDA), spray drift
ANZSRC Field of Research 2020419999. Other environmental sciences not elsewhere classified
410499. Environmental management not elsewhere classified
Public Notes

20 year patent accepted by IP Australia.

Please note that this item has a Worldwide patent.

Byline AffiliationsDepartment of Agricultural, Civil and Environmental Engineering
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