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Electronics and FluidicsFluid Mechanics

Validation Tools of Nonlinearities Associated With Aeroelastic Phenomena

Authors: Muhammad R. Hajj; VIRGINIA POLYTECHNIC INST AND STATE UNIV BLACKSBURG DEPT OF ENGINEERING SCIENCE AND MECHANICS
 
Abstract: The work performed under Grant # F49620-03-l-0206 included the analysis of a unique database on the hard flutter of a Flexible Semispan Model of a High Speed Civil Transport model. The experiments were performed in the Langley Transonic Dynamic Tunnel. These experiments are unique in terms of the model scaling and characteristics, the range of Mach number and dynamic pressure and the observed phenomena. To date, the analysis of the data performed with the support of AFOSR yielded two journal articles and two conference papers. The abstracts of these articles and their reference numbers are listed in Appendix A Moreover, a new computer code has been developed to identify cubic nonlinearities of any system.

Limitations: APPROVED FOR PUBLIC RELEASE
Description: Final rept. 1 May 2003-31 Oct 2004
Pages: 4
Report Date: 15 NOV 2004
Contract Number: F49620-03-1-02O6
Report Number: A695824
Keywords relating to this report:
*AEROELASTICITY
*NONLINEAR SYSTEMS
COMPUTER PROGRAMS
DATA BASES
DYNAMIC PRESSURE
FLUTTER
MACH NUMBER
MATHEMATICAL ANALYSIS
SCALING FACTOR
TRANSONIC WIND TUNNELS
VALIDATION
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