Abstract: A gas turbine engine utilizes a main and at least one auxiliary particle separator for enhancing the separation of foreign particles from a stream of air entering the engine. The engine includes interior walls which collectively define an engine intake passageway and a compressor inlet passageway in flow communication with the intake passageway so as to provide a primary flowpath for air traveling through the engine to the engine compressor. The main and auxiliary particle separators each include a passageway associated with a corresponding interior wall of the engine. Each separator passageway has an inlet opening to one side of the main flowpath and directed generally upstream of the primary flowpath so as not to appreciably effect the pressure loss through the engine.