When the anti-ice system is activated, what happens to the bleed air temperature?

When the anti-ice system is activated on the C-17, the bleed air temperature increases. This is essential for preventing ice formation on critical surfaces of the aircraft, including the wings and engine inlets. The anti-ice system utilizes increased temperature bleed air to ensure that these areas remain above freezing even in cold and moist conditions, thus maintaining safety and performance integrity during flight.

The increase in bleed air temperature is necessary because ice can significantly impact the aircraft's aerodynamics, weight, and engine performance. By providing hotter air for anti-icing purposes, the system effectively mitigates the risks associated with icing. This process enhances the overall operational capability of the aircraft when flying in potentially icing conditions.