The parametric trends in the aeroelastic behavior of an advanced turboprop were experimentally investigated using a sub-velocity scaled testing procedure. A two ft. diameter sub-velocity scaled model was constructed and its flutter behavior was favorably correlated to that of a full-velocity scaled UnDucted Fan TM model for which a flutter point had been documented. With the validity of the sub-velocity scaled procedure established, the inherent versatility was exploited through the construction and flutter testing of models which allowed for the parametric variation of sweep, mass distribution, and solidity. The correlation between an analytic model developed and the experiment is favorable for variation in mass distribution and sweep. As is typical of moderate mass ratio wings and blades, the flutter was found to be of a coalescence type, the onset of which is determined by a critical relative velocity with a slight dependence on loading and cascade effects.
Parametric trends in the flutter of advanced turboprops
Parametrische Trends beim Flattern moderner Turbopropeller
ASME-Papers ; Jun ; 1-11
1989
11 Seiten, 11 Bilder, 3 Tabellen, 21 Quellen
Aufsatz (Konferenz)
Englisch
Parametric studies of advanced turboprops
NTRS | 1990
|Parametric studies of advanced turboprops
AIAA | 1990
|Parametric studies of advanced turboprops
AIAA | 1988
|