What do chines on an aircraft do regarding water or slush?

Chines on an aircraft are aerodynamic features designed primarily to direct airflow, and one of their critical functions is to deflect water or slush away from the engine intakes. This is particularly important during takeoff and landing when aircraft may encounter wet or slushy runway conditions. By helping to deflect these elements, chines reduce the risk of engine ingestion of foreign materials, which could lead to engine damage or performance issues.

In addition to their role in protecting engine intakes, chines can influence other aspects of aircraft performance. However, their primary design consideration in the context of water or slush management is to ensure that these elements are kept away from the critical areas of the aircraft's propulsion system. This deflection capability thus contributes to the overall safety and efficiency of the aircraft's operations under adverse conditions.