Space Shuttle Orbiter Leading Edge Structural Subsystem development

The development of the Space Shuttle Orbiter Leading Edge Structural Subsystem (LESS) is traced from concept definition, through technical development, to final design, qualification testing and flight performance. A detailed description of the LESS is presented to support a discussion of the design, material development and thermal/structural integration. Extensive development/qualification tests and analytical studies were performed to verify the thermal/structural system performance and to certify the LESS for flight. Flight data and detailed post-flight inspection results are presented which support the conclusion that the LESS system performance has been outstanding.