LOW ASPECT RATIO TRANSONIC ROTORS .1. BASE-LINE DESIGN AND PERFORMANCE

The analytical design and experimental test of a single-stage transoni c axial-flow compressor are described. This design is the baseline of a compressor design study in which several blade design parameters hav e been systematically varied to determine their independent effects on compressor performance. The baseline design consisted of ruggedizing an existing compressor design that demonstrated outstanding aerodynami c performance, to correct some undesirable aeromechanical characterist ics. The design study was performed by varying only one design paramet er at a time, keeping the other design variables as close as possible to the baseline design. Specific design parameters of interest were th ose for which very few data were available to determine their sensitiv ity on compressor performance. This paper describes the baseline compr essor design and its experimental performance. A detailed definition a nd flow analysis of the baseline design test point (used as the basis for all subsequent design variations) are provided.