In aerial use, granule blowers can be deployed with which aircraft configuration?

• A. Granule blowers cannot be used in aerial applications.
• B. They require an infrared beam to function in aircraft.
• C. Fixed-wing aircraft may use 'ram-air' spreaders using air pressure from forward speed or propeller wash for distribution.
• D. Helicopters cannot operate granule blowers.

Answer: (C)

Granule distribution from the air relies on harnessing the airflow around the aircraft. In fixed-wing aircraft, ram-air spreaders use the pressure generated by the plane’s forward motion or by propeller wash to push granules out and spread them. This method leverages the moving air to carry and disperse the granules across the target area, providing broad, even coverage as the aircraft flies a pattern. Aerial use is common and effective because it doesn’t require extra energy beyond the aircraft’s motion and is suited to large, open spaces. The other statements aren’t accurate: granule blowers are indeed used in aerial applications; infrared beams aren’t part of their operation; and helicopters can operate granule dispensers as well.