An Explication of Airfoil Section Bending-Torsion Flutter  

Abstract Category: Engineering
Course / Degree: Department of Civil and Environmental Engineering
Institution / University: University of Maryland, College Park, United States
Published in: 2004

Thesis Abstract / Summary:

This thesis examines the dynamic instability known as flutter using a two-degree-of-freedom airfoil section model in both quasi-steady and unsteady flow. It explains the fundamental forces and moments involved in the bending-torsion flutter of an airfoil section, and demonstrates a solution method for determining the critical flutter frequency and speed for both flow cases. Additionally, through the use of a programmed Mathcad 11 worksheet, it evaluates the flutter characteristics of six example sections, illustrating the effects of the elastic, inertial and aerodynamic properties of an airfoil section. For each section, a parametric study of the effect of the section Center of Gravity position along the section chord is performed. The flutter frequency and speed are calculated using both quasi-steady and unsteady aerodynamic forces and moments, and the results compared. Software used was MathSoft Mathcad 11, Microsoft Word and Intergraph Smart Sketch LE.

Thesis Keywords/Search Tags:
Aeroelasticity, Flutter, Structural Dynamics

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Submission Details: Thesis Abstract submitted by Philip Curtis Wheeler from United States on 18-Jul-2005 18:05.
Abstract has been viewed 2731 times (since 7 Mar 2010).

Philip Curtis Wheeler Contact Details: Email: wheelercp@yahoo.com

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