Abstract: The invention relates to a heat exchanger of an air circulation channel of a turbomachine, the heat exchanger being configured so as to have fluid to be cooled passing through it and including a plurality of fins protruding from a support surface, the heat exchanger being characterized in that each fin includes a base and a preferably continuous leading face which extends axially from the base in the air circulation direction while tapering from upstream to downstream along an axis parallel with the support surface.

Abstract: The invention relates to a heat exchanger for an air circulation channel of a turbomachine, with the heat exchanger being configured to be passed through by a fluid to be cooled and comprises a plurality of fins protruding with respect to a support surface, each fin extends axially over a length in the direction of the circulation of air and comprises a leading edge and a trailing edge, with the heat exchanger characterised in that each fin further comprises a central body, between the leading edge and the trailing edge, with the central body having in a plane parallel to the support surface a curved central profile.