Aeroelasticity Research for Turbomachine Applications

The continuing demand for increased performance in turbine engine turbomachinery has aggravated dynamic problems in the various components, particularly the blading. These problems are generally classified into the categories of either flutter or forced response. Historically, the complexity of the flowfield necessitated the development of empirical flutter and forced-response design techniques. However, such empirical correlations have proven to be inadequate when extrapolated beyond past experience levels. Hence, current research effort, coordinated between industry, government, and universities, is directed toward the development of phenomcnologically founded approaches to these problems. Presented herein is an overview of this ajtack on aerodynamical!}' induced vibrations in turbomachines.