A small perturbation analysis of rotating stall is presented which includes the effects of finite pressure rise across the cascade, finite blade chord, and boundary-layer time delay. The theory yields a stability criterion for the initiation of rotating stall, upper and lower boundaries for the velocity of propagation, and a possible explanation for the mechanism governing the number of stall cells. Tests on rotating stall in a cascade and two rotors suggested a vortex-shedding model for fully developed rotating stall which is not limited to small perturbations and which appears to agree closely with the observed stalling mechanism.

This content is only available via PDF.
You do not currently have access to this content.