Patent ID: 8721271
Filing Date: 2014-05-13
Classification: F01D,F02C,F02K,F05D

Abstract:
1. An oil cooler for a wall of an air flow passage of a gas turbine engine, the cooler including: an oil flow section for carrying a flow of heated oil in a layer substantially parallel to the wall of the air flow passage, a plurality of inner air fins projecting away from the wall of the air flow passage from a side of the oil flow section, the inner air fins being spaced side-by-side and extending in the direction of air flow through the passage, and a plurality of outer air fins projecting towards the wall of the air flow passage from an opposing side of the oil flow section, the outer air fins being spaced side-by-side and extending in the direction of air flow through the passage; the inner air fins and the outer air fins are for transferring heat extracted from the heated oil into the air flowing through the passage, and the oil cooler comprises one or more diverting surfaces which project forwardly into the incoming air to divert air flow through the passage away from the inner air fins and towards the outer air fins.