Chapter 5- Aerial Pesticide Dispersal Systems Flashcards Preview

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Flashcards in Chapter 5- Aerial Pesticide Dispersal Systems Deck (20)
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1
Q

Aircraft suitable for aerial application of pesticides must be…

A

Able to lift, transport, and disperse pesticides safely

2
Q

Iron or steel components in an aircraft dispersal system may react with acidic pesticide mixtures to produce…

A

Hydrogen

3
Q

One of the reasons for an adequate vent in the aircraft pesticide tank is to…

A

Prevent a vacuum from altering the normal flow of liquid

4
Q

Proper agitation of the liquid in a spray tank is especially needed when applying…

A

Wettable powder formulations

5
Q

Even distribution of the pesticide mixture over the treatment area requires a…

A

Uniform flow rate

6
Q

On aircraft dispersal systems, the component that ensures a uniform flow rate is the…

A

Pump

7
Q

The purpose of baffles inside spray tank is to…

A

Reduce sloshing of the liquid during flight

8
Q

Hydronic agitation of the mixture in the aircraft spray tank requires…

A

Sufficient pump output capacity

9
Q

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.

A

Low negative

10
Q

The length of a spray boom on a fixed wing aircraft should be no more than _______ percent of the aircraft wingspan.

A

75

11
Q

The length of a spray boom on a rotary wing aircraft should be no more than ______ percent of the width of the main rotor.

A

90

12
Q

Spray that strikes a structural part of the aircraft during application will likely…

A

Collect and fall off in large drops

13
Q

The purpose of bleed valves at the ends of the spray boom is to…

A

Prevent pressure from building up from trapped air when the spray valve is opened

14
Q

To accommodate for the influence of the aircraft wake on spray pattern, it is necessary to…

A

Reposition the nozzles on the spray boom

15
Q

A major disadvantage of come pattern nozzles is that they…

A

Tend to produce small droplet sizes prone to drift

16
Q

In order to double the liquid output of spray nozzles, the spray pressure must be…

A

Quadrupled

17
Q

The advantage of an electronic sprayer rate controller is that it…

A

Reduces or increases the spray output as altitude changes

18
Q

Ram-air spreaders can…

A

Compromise fixed wing aircraft performance

19
Q

The purpose of adjusting ram-air spreader vanes is to…

A

Improve the granule distribution pattern

20
Q

One way to overcome the problems associated with a ram-air application of granules that requires more than 250 pounds of product per acre is to…

A

Reduce the application rate and make a double application to the site