Conceptual Design of the Axial Compressor Stage with Counter-Rotating Rotors

Abstract

The article deals with the design solution of the unconventional concept of compressor with counter-rotating rotors, especially in order to create a model which, due to its parameters in simulated operation, would achieve the higher values of compression ratio with satisfactory compression efficiency in comparison to conventional axial compressor. The primary goal of this work is to create a design of a compressor stage with counter-rotating rotors from a theoretical point of view. The compressor model was created respecting the problems with lubrication of geared mechanism, pressurization of labyrinth seals for preventing oil leaks and the transfer of compressed air inside hollow compressor blades. Subsequent design evaluation and optimization is based on airflow analysis of the compressor stage. Obtained results shows improvement in higher values of absolute pressure behind stages in comparison to conventional compressor stage. The secondary goal is to point out the existence and application of innovative and progressive technology of rapid prototyping in the world of aircraft component production and at the same time to emphasize its benefits in comparison with conventional production techniques applied in the initial stages of aircraft component production.