Definition
A circular distribution manifold mounted on the propeller hub of an aircraft equipped with a fluid-type ice protection system. Anti-icing fluid is pumped from a tank to the slinger ring, which uses centrifugal force from the spinning propeller to fling the fluid outward along the propeller blades, preventing ice from forming on the leading edges.
Plain English
A ring fitted to the spinning propeller hub that throws anti-ice fluid out along the blades so ice cannot stick to them.
Context Anchor
Seen in propeller anti-icing system descriptions and maintenance checks for fluid-type propeller ice protection.
Derivation
Called a slinger because it slings the fluid outward. The spinning ring uses centrifugal force the same way a wet dog flings water off when it shakes — the fluid is thrown outward along the blades by the rotation itself, no separate pump pressure needed at the blade.
Why Pilots Care
Prevents ice buildup on propeller blades, preserving thrust and minimizing vibration during flight in icing conditions.
Intuition Check
A slinger ring is not just a support ring or trim piece. Its job is to distribute fluid by using the propeller’s rotation.
Example Sentence 1
Before the flight into forecast icing, the pilot checked that the anti-ice fluid tank feeding the slinger ring was full.
Example Sentence 2
During the preflight inspection the mechanic checked the slinger ring for damage that could block fluid flow.