抄録
Rocket play increasingly important roles, e.g., supply missions to the international space station and artificial satellite launches. In recent years, thus improved reliability of rockets is highly desired. Turbines used in rocket engine system are often designed as supersonic turbine. In supersonic turbine, unsteady shock waves interact with each other as well as with wakes, resulting in very complex flow fields where rotor blades experience unsteady aerodynamic forces. In the present paper, three-dimensional computational fluid dynamics and modal analysis are conducted to investigate unsteady aerodynamic forces and structural response modes of a supersonic turbine rotor.
