Investigations on an Experimental Single-stage Turbine of Conservative Design. Part I A Rational Aerodynamic Design Procedure. Part II Test Performance of Design Configuration

Abstract

Part I - The design of a turbine stage is described in which all leading parameters (stage loading, flow coefficient, pitch/chord ratio, blade profile shape and aspect ratio) have been selected conservatively to accord with current ideas for ensuring a reasonably high level of aerodynamic efficiency. Part II - To check theoretical prediction methods the turbine stage described in Part I of this Report has been tested extensively on a cold flow experimental rig over a wide range of operating conditions. The test results have been compared with performance figures calculated by the method currently in use at the National Gas Turbine Establishment.