Diagnosis of Flutter Model Response Using Time Correlation Techniques

Title: Diagnosis of Flutter Model Response Using Time Correlation Techniques
Report Number: RTD-TDR-63-4197 Part I, p. 279
Creator: Werdes, R. J.; Ferman, M. A.
Corporate Author: McDonnell Aircraft Corporation
Laboratory: Air Force Flight Dynamics Laboratory
Date: 1964
Date Issued: 1964-03
Extent: 20
Abstract: The analysis of flutter model time history records and the determination of flutter onset is often a matter of judgment. A unique method for analyzing flutter model time histories is presented. The method, which yields repeatable results, utilizes as the diagnostic parameter the continuous analog evaluation of the aerodynamic work imparted to the model in a flutter mode per unit time, i.e., the aerodynamic power. The Aerodynamic Power Function (APF) is readily evaluated for the case of wing bending-torsion flutter in terms of the average running cross-correlation of wing bending and torsion responses sensed by strain gages. Typical experimental results are presented for swept wings tested in transonic blow-down tunnels. Applications to systems involving more degrees of freedom are presented.
Distribution Classification: 1
Distribution Conflict: No
DTIC Record Exists: No
Illinois Tech Related: No
Photo Quality: Complete
Report Availability: Full text available
Type: article
Is Part Of: Proceedings of Symposium on Aeroelastic & Dynamic Modeling Technology
Provenance: Bombardier/Aero