High Temperature Materials: an Introduction to Onera’s Contribution

The third issue of Aerospace Lab is dedicated to high temperature materials. Onera has been at the forefront of research and development for this class of materials for the past five decades, especially for aerospace engine applications. Starting in the mid 1960’s, many new materials and processes were invented, and cutting-edge research was carried out during this period. Similarly and concurrently, great progress has been made in mechanical modeling and lifing analysis, but a description of these aspects will require a full separate issue. The focus here is on materials in the hot sections of compressors and turbines. These materials have a wide range of applications. The purpose of the papers that follow is to illustrate the state-of-the art, the progress made and the future outlook for such materials in propulsion systems.