How does reduced forward speed of a helicopter affect ice accumulation?

Reduced forward speed of a helicopter generally impacts the airflow over its surfaces, which can lead to a decrease in ice accumulation on the fuselage. When a helicopter is flying at lower speeds, the relative wind flowing over the fuselage is reduced. This lower airflow can contribute to a warmer surface temperature on the fuselage due to less cold air contacting it, thus helping to mitigate ice build-up.

As the helicopter slows down, the effectiveness of aerodynamic forces that can shed or prevent ice from forming is diminished. Therefore, while the chances of ice still forming exist, particularly in conditions conducive to ice accumulation, the overall effect of reduced forward speed is that it encourages a decrease in ice accumulation on the fuselage compared to when flying at normal speeds. This understanding is crucial for pilots to effectively manage ice hazards during flight operations.