These volumes contain 158 papers from over 18 countries from the 12th International Symposium on Air Breathing Engines. Topics covered include hypersonic propulsion systems, combustion, turbomachinery flows, fluid mechanics problems, supersonic combustion, turbines and integration.

In this volume 150 papers from 18 different countries from the 11th International Symposium on Air Breathing Engines are presented in two volumes. Topics include hypersonic propulsion systems, combustion, turbomachinery flows, fluid mechanics problems and supersonic combustion.