Turboshaft engine having improved inlet particle scavenge systems and method for the manufacture thereof

摘要

Embodiments of a turboshaft engine (40) are provided, as are embodiments of a method for manufacturing a turboshaft engine. In one embodiment, the turboshaft engine includes an Inlet Particle Separator (IPS) system (42) having an IPS scavenge flow circuit (70, 102) fluidly coupled to the engine's inlet section (44). A heat exchanger (88, 106) and a heat exchanger bypass duct (92, 128) are fluidly coupled to the IPS scavenge flow circuit. The heat exchanger bypass duct is configured to direct airflow around the heat exchanger. A particle separation device (86, 104) is fluidly coupled in series with the heat exchanger in the IPS scavenge flow circuit. The particle separation device directs particulate matter entrained within the airflow through the IPS scavenge flow circuit into an inlet (130) of the heat exchanger bypass duct to reduce the amount of particulate matter ingested by the heat exchanger during engine operation.