FLEXURAL OSCILLATIONS OF FLEXIBLE AIRFOILS IN SUBSONIC COMPRESSIBLE FLOWS
Journal Title: INCAS BULLETIN - Year 2009, Vol 1, Issue 2
Abstract
This paper presents simple and efficient analytical solutions for unsteady subsonic compressible flows past flexible airfoils executing low frequency oscillations. These analytical solutions are obtained with a method using velocity singularities related to the airfoil leading edge and ridges. The method has been validated for the pitching and plunging oscillations of the rigid airfoils by comparison with results based on Jordan’s data for compressible flows and by comparison with the solutions obtained by Theodorsen, Postel & Leppert and Mateescu & Abdo for incompressible flows. The method has been applied to obtain efficient analytical solutions for the flexural oscillations of airfoils in compressible flows, which can be efficiently used in solving aeroelastic problems.
Authors and Affiliations
Dan MATEESCU
Keywords
Related Articles
- EP ID EP85509
- DOI 10.13111/2066-8201.2009.1.2.11
- Views 138
- Downloads 0
The analysis of the process tending towards equilibrium in transitional and turbulent wall flows
Starting from the integro-differential formulation (IDF) [1], [2] of the basic conservation equations in wall flows, the authors perform a qualitative analysis of the microscopic-macroscopic domain. According to IDF, the...
STUDIES ON FLUTTER PREDICTION
The purpose of this paper is to study the instability of the dynamic flutter. The justification is expressed by the fact that the occurrence of flutter within the aircraft’s flight envelope results in irreversible struct...
Numerical simulation of a DFB - fiber laser sensor (part 1)
This paper presents the preliminary results obtained in developing a numerical simulation analysis of fiber optic bending sensitivity aiming to improve the design of fiber lasers. The developed numerical simulation metho...
Aeromobile forces in missions abroad
This article shows the role of Aeromobile forces during missions abroad. Firstly it will be explained how to understand the concept of “Aeromobile forces”. After that a short classification of missions abroad will be sho...
TOWARDS THE ELECTRIC PROPULSION
The paper presents benefits and drawbacks of the electric propulsion for the case of a ten seat commuter aircraft. An efficiency evaluation is made for an electric version of AEROTAXI, considered as a reference. The eval...