What is the purpose of anti-ice systems in aircraft?

The purpose of anti-ice systems in aircraft is primarily to prevent ice formation on critical surfaces. Ice can accumulate on wings, control surfaces, and engine inlets, negatively affecting an aircraft's performance, stability, and safety. By ensuring that these surfaces remain free of ice, anti-ice systems play a crucial role in maintaining the aerodynamic characteristics and control of the aircraft, especially during flight in cold, moist conditions. This is vital for effective flight operations and passenger safety, as ice buildup can lead to decreased lift, increased drag, and potential control issues.