... and high frequencies. Contour charts reporting the maximum acceptable amplitude of fluctuations for each frequency and average Mach number constitute a valuable tool for the design of a supersonic turbine. For lower frequencies, the minimum Mach number corresponds to the steady-state limit for collective...

..., and this article deals with the supersonic inlet configuration. After having reviewed the main design steps of an exemplary RDE supersonic turbine, the article focuses on the considerable effects that endwall losses have on the performance of supersonic-inlet turbines and on the reasons why endwall contouring...

... methods. The application to the re-design of a supersonic turbine nozzle shows the capabilities of applying a high-fidelity optimization, consisting of a 50% reduction in the cascade loss coefficient and in an increased flow uniformity at the inlet of the subsequent rotor. Two alternative surrogate-based...