What is the most common ice protection used on the propellers of modern turboprops?

• A. De-icing Boots
• B. Electrical Heating
• C. Thermal Electric
• D. Heated Propeller Blades

Answer: (C)

Ice protection for propellers on modern turboprops relies on heating the blade leading edges with electrical power. This thermal-electric blade heating uses embedded heaters in the blade to provide controlled heat, preventing ice from forming or melting it quickly. It’s the preferred method because it delivers uniform, reliable protection across all flight conditions and avoids the mechanical complications of adding inflatable or external systems to a rotating blade. De-icing boots are impractical on propeller blades due to rotation, balancing, and effectiveness concerns, and while heated blades are sometimes called heated propeller blades, the key idea is electric heating of the blade surface. Therefore, the common approach is thermal-electric blade heating.