Mukherjee, Somenath and Manjuprasad, M and Raghunath, Ganesh and Anoop, AM and Onkar, AK (2009) Study of airfoil flutter. Technical Report. National Aerospace Laboratories, Bangalore, India.
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Abstract
The objective of this work is to study the behavior of airfoil flutter characteristics through the classical methods of analysis using the state-space approach. This is accomplished by means of a simple two-dimensional subsonic flow code based on the iterative p-k method which incorporates the theodorsen's function for taking into account the unsteady effects. A symmetric airfoil of heave and pitch degrees of freedom and of unit chord length is chosen for our analysis, with appropriate support stiffness values so that it has a subsonic flutter boundary. A computer code in MATLAB is developed for determining the flutter boundary of the airfoil structure under various damping conditions. Results have been benchmarked with those from flutter models using MSC-NASTRAN.
| Item Type: | Proj.Doc/Technical Report (Technical Report) |
|---|---|
| Uncontrolled Keywords: | State-space approach;p-k method;Flutter boundary;Subsonic flow;Mass and stiffness parametric study;Flutter index diagram;Airfoil-flap flutter |
| Subjects: | AERONAUTICS > Aeronautics (General) |
| Division/Department: | Structural Integrity Division, Structural Integrity Division, Other, Other, Structural Integrity Division |
| Depositing User: | M/S ICAST NAL |
| Date Deposited: | 22 May 2009 |
| Last Modified: | 17 Jun 2010 15:08 |
| URI: | http://nal-ir.nal.res.in/id/eprint/5113 |
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