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The ice protection system for the propellers of most turbo-prop aeroplanes operates..
  • A
    electrically.
  • B
    pneumatically.
  • C
    with hot air.
  • D
    with anti-icing fluid.

Refer to figure.

ICE CONTROL SYSTEMS
Ice control systems consist of a combination of anti-icing and de-icing equipment. Anti-icing equipment prevents the formation of ice, while de-icing equipment removes ice after it has formed. Aircraft components that must be protected from ice accumulations include the leading edges of wing and tail surfaces, pitot and static source openings, fuel tank vents, stall warning sensors, windshields, and propeller blades. Additionally, engines can require alternate sources of intake air or ice protected inlets.

PROPELLER ICE CONTROL. Propeller can be protected from ice by using alcohol or electrical heating elements.

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