Chapter 5- Aerial Pesticide Dispersal Systems Flashcards
Aircraft suitable for aerial application of pesticides must be…
Able to lift, transport, and disperse pesticides safely
Iron or steel components in an aircraft dispersal system may react with acidic pesticide mixtures to produce…
Hydrogen
One of the reasons for an adequate vent in the aircraft pesticide tank is to…
Prevent a vacuum from altering the normal flow of liquid
Proper agitation of the liquid in a spray tank is especially needed when applying…
Wettable powder formulations
Even distribution of the pesticide mixture over the treatment area requires a…
Uniform flow rate
On aircraft dispersal systems, the component that ensures a uniform flow rate is the…
Pump
The purpose of baffles inside spray tank is to…
Reduce sloshing of the liquid during flight
Hydronic agitation of the mixture in the aircraft spray tank requires…
Sufficient pump output capacity
A proper functioning positive cutoff valve with a suck-back feature will supply ________ pressure you the boom and nozzles when the spray flow is stopped.
Low negative
The length of a spray boom on a fixed wing aircraft should be no more than _______ percent of the aircraft wingspan.
75
The length of a spray boom on a rotary wing aircraft should be no more than ______ percent of the width of the main rotor.
90
Spray that strikes a structural part of the aircraft during application will likely…
Collect and fall off in large drops
The purpose of bleed valves at the ends of the spray boom is to…
Prevent pressure from building up from trapped air when the spray valve is opened
To accommodate for the influence of the aircraft wake on spray pattern, it is necessary to…
Reposition the nozzles on the spray boom
A major disadvantage of come pattern nozzles is that they…
Tend to produce small droplet sizes prone to drift
