Skip to main content

Aerodynamic and aeroelastic insights using eigenanalysis

Publication ,  Journal Article
Heeg, J; Dowell, EH
Published in: Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
January 1, 1999

This paper presents novel analytical results for eigenvalues and eigenvectors produced using discrete time aerodynamic and aeroelastic models. An unsteady, incompressible vortex lattice aerodynamic model is formulated in discrete time; the importance of several modeling parameters is examined. A detailed study is made of the behavior of the aerodynamic eigenvalues both in discrete and continuous time. The aerodynamic model is then incorporated into aeroelastic equations of motion. Eigenanalyses of the coupled equations produce stability results and modal characteristics which are valid for critical and non-critical velocities. Insight into the modeling and physics associated with aeroelastic system behavior is gained by examining both the eigenvalues and the eigenvectors. Potential pitfalls in discrete time model construction and analysis are examined.

Duke Scholars

Published In

Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference

ISSN

0273-4508

Publication Date

January 1, 1999

Volume

3

Start / End Page

2242 / 2252
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Heeg, J., & Dowell, E. H. (1999). Aerodynamic and aeroelastic insights using eigenanalysis. Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, 3, 2242–2252.
Heeg, J., and E. H. Dowell. “Aerodynamic and aeroelastic insights using eigenanalysis.” Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference 3 (January 1, 1999): 2242–52.
Heeg J, Dowell EH. Aerodynamic and aeroelastic insights using eigenanalysis. Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference. 1999 Jan 1;3:2242–52.
Heeg, J., and E. H. Dowell. “Aerodynamic and aeroelastic insights using eigenanalysis.” Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, vol. 3, Jan. 1999, pp. 2242–52.
Heeg J, Dowell EH. Aerodynamic and aeroelastic insights using eigenanalysis. Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference. 1999 Jan 1;3:2242–2252.

Published In

Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference

ISSN

0273-4508

Publication Date

January 1, 1999

Volume

3

Start / End Page

2242 / 2252