High pressure spray system
View Patent ↗A combination of an aircraft and spraying apparatus for spraying suspensions or solutions having predetermined characteristics independent of the speed of the aircraft, the apparatus consisting of a mounting frame attached to the underside of the aircraft, a plurality of bearing braces attached to the frame and a propeller shaft mounted through the bearing braces. A full feathering propeller is mounted on the forward end with a control running to the cockpit of the aircraft, and a rotary piston type high pressure pump connected to the aft end of the propeller. The input of the pump is connected to a supply tank in the aircraft and the output is connected to a spray boom. The spray nozzles consist of high pressure impingement nozzles.
1. A combination of an aircraft and high pressure spraying apparatus for spraying suspensions/solutions of insecticides having predetermined characteristics independent of the speed of the aircraft carrying out the spraying, said apparatus comprising:
a mounting frame being attached to the underside of said aircraft, said frame having a plurality of bearing braces, said bearing braces being reinforced with a plurality of brackets affixed downwardly from said frame,
a propeller shaft mounted through said bearing braces, said propeller shaft having a forward end and an aft end,
a full feathering propeller being mounted on said forward end of said propeller shaft, said propeller having a control cable attached thereto, said cable extending to the cockpit of said aircraft and being controlled by an operator in said aircraft,
a rotary piston high pressure pump being mounted on said aft end of said propeller shaft, the input side of said pump being connected to a tank mounted in the interior of said aircraft,
a spray boom having a forward end and an aft end, said spray boom having a forward end attached to said mounting frame, below the tail end of said aircraft, and being connected to the output side of said rotary piston pump, and
a plurality of spray nozzles being attached to said aft end of said spray boom said spray boom having a plurality of nozzles, said nozzles having impingement elements for creating insecticide droplets by force of high pressure insecticide hitting pointed, impingement surfaces.
2. A combination of an aircraft and spraying apparatus according to claim 1 wherein said spray nozzles consist of BETE PJ-12 impingement nozzles.