What fluid is commonly used for propeller ice control?

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The fluid commonly used for propeller ice control is alcohol, particularly in the form of isopropyl alcohol or propylene glycol-based fluids. These substances are effective in reducing ice build-up on propeller surfaces because they have lower freezing points and can effectively lower the freezing point of water, thus preventing ice formation.

Alcohol-based fluids can spread easily over surfaces and create a barrier that inhibits the adhesion of ice, making them a practical choice for aviation applications, especially for aircraft that may encounter freezing conditions during flight or ground operations.

In contrast, other options do not serve the purpose as effectively. Water, while essential in many scenarios, actually contributes to ice formation rather than preventing it. Glycol is often associated with de-icing applications, particularly in heating systems for aircraft, but when it comes to propeller surfaces, its application is typically less direct compared to alcohol. Mineral oil is not suitable for this application due to its properties, which are not effective in preventing ice build-up.

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