Particle separators for gas turbine engines

A particle separator, comprising:

• an outer scavenge passage extending circumferentially less than 360 degrees between a first end and a second end;
• an inner scavenge passage extending circumferentially less than 360 degrees between said first and second ends, said inner scavenge passage disposed radially inward from said outer scavenge passage;
• an air inlet section extending circumferentially less than 360 degrees and located between said outer scavenge passage and said inner scavenge passage and adapted for receiving an inlet airflow,
• a plurality of separated airflow paths located between said inner scavenge passage and said outer scavenge passage, each of said airflow paths including a curved separating portion;
• and
• wherein said outer scavenge passage and said inner scavenge conduit are adapted to receive particles separated from said inlet airflow as the inlet airflow passes along said curved separating portions.