AIRCRAFT COMPONENTS WITH POROUS PORTION

摘要

A component (20) including a porous portion (50a) which may be permeable or impermeable to air. The component is a cooled wall segment for a gas turbine engine, including a body defining a contact surface (24) configured to be in contact with circulating hot gas and an outer surface (32) configured to be in contact with cooling air. The body includes a first portion (52a) with at least one retention element, and a porous second portion (50a) made of a porous material permeable to air, containing a plurality of interconnected pores, and having a porosity greater than that of the first portion (52a). The second portion (50a) is engaged to the first portion (52a), defines at least part of the contact surface (24), and defines at least part of a fluid communication between the outer surface (32) and the contact surface (24) through the interconnected pores. The wall segment may be for example a heat shield or shroud segment.