Recent experimental work on stall propagation in a single-stage research compressor is described. At certain fixed operating points, several different stall patterns were found to exist. Transitions from one pattern to the other occurred spontaneously, reversibly, and fairly frequently. These transitions were studied in detail. A regular modulation of the stall-propagation velocity is associated with the transition process. The modulation is used to determine stall frequency as a function of both wave number and mass flow. Stall-cell size measurements, static-pressure surveys, and a study of the region downstream of the stall-propagating rotor are described.

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