Design and analysis of a turboshaft engine turbine

This paper performed the aerodynamic design of the high pressure turbine and power turbine of an 850 Hp turbo-shaft engine with multi-arc and fifth polynomial curves. A particular cooling structure was designed in the high-pressure turbine vanes with the intention of decreasing the temperature of the stator blades. The numerical computations were performed for the flow in the turbine cascades and the computed results showed that the designed cooling structure decreased the temperature of the stator blades efficiently. The flow losses of the high pressure turbine increased due to the separation in the high pressure turbine cascades. The computed results indicated that there is no distinct separation within the power turbine cascades. Generally the performance of the turbine had met the design goal and the optimization will be carried out in order to improve the performance.