Effects of blade curved on compressor cascades with different camber angles under different incidences

The experimental investigation of the effects of changing incidences on the aerodynamic performance of compressor cascades with different curved angles and camber angles in a low-speed annular wind tunnel were carried out. Experimental results show that with the increase of camber angle, the choice range of curve height correspond to the best performance in different incidences become narrower. The effects of incidence angles on the aerodynamic performance of positive curved cascades with large camber angle are more evident contrast to with small camber angle. The performance of positive curved cascades with 60° camber angle is so sensitive to the curved angle changing at higher incidence angles, so that a positive curved cascades with larger curved angles than 15° is inadvisable.