What anti-icing system is used to prevent ice from forming on propeller blades, and how is it delivered?

What anti-icing system is used to prevent ice from forming on propeller blades, and how is it delivered?

• A. A chemical anti-icing system using isopropyl alcohol and ethylene glycol pumped to a slinger ring and slung along the blades.
• B. Heating elements embedded in the blades.
• C. Electrical deicer boots heated by electricity.
• D. Water spray anti-ice system.

Answer: (A)

The method being tested is chemical anti-icing for propeller blades delivered as a liquid coating. A fluid such as isopropyl alcohol (often with water and sometimes glycol) is pumped from a reservoir to a slinger ring mounted at the propeller hub. As the blades rotate, the ring slings the liquid along the blade surfaces, coating them with a film that prevents ice from bonding and lowers the freezing point. This approach is specifically designed for protecting propeller blades from ice buildup. Other options describe heating or boots or a water spray system, which are not the typical propeller anti-ice method.

The method being tested is chemical anti-icing for propeller blades delivered as a liquid coating. A fluid such as isopropyl alcohol (often with water and sometimes glycol) is pumped from a reservoir to a slinger ring mounted at the propeller hub. As the blades rotate, the ring slings the liquid along the blade surfaces, coating them with a film that prevents ice from bonding and lowers the freezing point. This approach is specifically designed for protecting propeller blades from ice buildup. Other options describe heating or boots or a water spray system, which are not the typical propeller anti-ice method.