Abstract: A particle separator for a gas turbine engine is described having an inlet passage to the compressor of the gas turbine engine, with the inlet passageway being defined by an inner wall and an outer wall. The inner wall diverges outwardly to form a throat with a diverging outer wall and converges inwardly downstream thereof. A first bypass opening is provided immediately upstream of the diverging inner wall, whereby solid and liquid particles can be diverted and passed overboard. A splitter ring is provided in the inlet passageway downstream of the converging inner wall, such that the finer particles escaping from the first bypass openings would be separated by the splitter ring.

Abstract: An airflow particle separator for a gas turbine engine provided for removing foreign particles and moisture from the air flow. The separator comprises an inner wall and an outer wall defining a passageway therebetween, with the inner wall including an inlet portion diverging in a downstream direction away from the separator axis while converging towards the outer wall to form a throat to accelerate incoming air to a higher velocity in a substantially axial direction. The inner wall then converges towards the separator axis and diverges from said outer wall with a splitter ring disposed between the inner and outer walls for splitting said passageway into inner and outer passages, with the outer passage adapted to bypass moisture and foreign particles. The leading edge of the splitter ring is located downstream and inward of said throat.