Which nozzles generally require alteration to correct prop wash effects?

Nozzles situated within 3 to 6 feet of the fuselage are particularly influenced by prop wash effects, which occur due to the airflow generated by the aircraft's propeller. This airflow can disrupt the intended spray pattern and consistency of distribution, leading to uneven application of pesticides or fertilizers.

In this proximity, the turbulence and altered pressure created by the prop wash can cause droplets to be blown off course, affecting their trajectory and ultimately their efficacy in reaching the targeted area. Therefore, adjustments to the nozzles in this zone are necessary to mitigate these effects and ensure that the application meets the required accuracy for both effectiveness and environmental safety.

On the other hand, nozzles positioned more than 10 feet from the fuselage are less impacted by prop wash and typically maintain a more stable and effective spray pattern. Nozzles at the tail end of the aircraft may also experience reduced influence from the propeller's airflow. Hence, the need for alteration is particularly critical for nozzles located within the designated range of 3 to 6 feet from the fuselage to achieve optimal performance during aerial application.