AMP - Aviation Maintenance Technician Powerplant Practice Exam

How is anti-icing fluid ejected from the slinger ring on a propeller?

1. By pump pressure

2. By centripetal force

3. By centrifugal force

4. By gravity

The correct answer is: By centrifugal force

Anti-icing fluid is ejected from the slinger ring on a propeller by centrifugal force. Centrifugal force is an outward force that is exerted on an object moving in a circle. In this case, the rotating motion of the propeller causes the fluid in the slinger ring to be pushed outwards, effectively distributing it onto the blades to prevent ice buildup. Option A, pump pressure, is incorrect because the slinger ring does not rely on a pump to expel the fluid. Option B, centripetal force, is the opposite of centrifugal force and would cause the fluid to move towards the center rather than outwards. Option D, gravity, is also incorrect as it does not play a role in the ejection of anti-icing fluid from the slinger ring.