Abstract: The main process of low-speed model testing is described to improve the characteristics of high pressure compressor, and the developments of low-speed model testing at home and abroad are introduced. By referring to successful experiences abroad and basing on similar rules, a new way to design a low-speed model compressor is devised. In order to validate the feasibility of the way, a four-stage repeating stage low-speed model compressor is designed for a high pressure compressor later stage. The result of 3D viscous flow calculation shows that the main aerodynamic parameters of the low-speed model compressor match well with those of the high speed compressor, and proves that this way to design a low-speed model compressor is viable.

Key words: aerospace propulsion system, compressor, low-speed model testing, aerodynamic design, repeating stage