Retractable heat exchanger for a lubrication system of an aircraft turbofan engine

摘要

A heat exchange system (10) for use in fluid operated equipment to provide air and working fluid heat exchanges to cool the working fluid in airstreams on a stream side of a wall (11). An actuator (40) is mounted to be substantially located on a side of the wall (11) opposite the stream side thereof having a positionable motion effector. A heat exchanger core (20) having a plurality of passageway structures (21) therein to enable providing the working fluid to, and removal therefrom. The heat exchanger core (20) is mounted on the motion effector so as to be extendable and retractable thereby through the opening (13) for selected distances into that region to be occupied by the airstreams.