Robust Flutter Prediction of an Airfoil Including Uncertainties

You are here: Homepage > Search

Robust Flutter Prediction of an Airfoil Including Uncertainties

Robust Flutter Prediction of an Airfoil Including Uncertainties

Kumar, A. Arun / Onkar, Amit Kumar

This work presents the robust stability analysis of 2DoF airfoil by including various uncertainties. These uncertainties arise due to several factors such as modeling and manufacturing errors as well as disturbances in the flight conditions. The approach adopted to study the uncertain aeroelastic system is based on the structured singular value (µ-method). In this approach, the aeroelastic system is formulated in a robust stability framework by parameterizing around dynamic pressure and introducing uncertainties in the system parameters to account for errors and disturbances. This results in the perturbed aeroelastic system which is then represented using Linear Fractional Transformation (LFT). Then, the nominal and robust stability analysis of the perturbed aeroelastic system is carried out using µ method. In this work, first the validation of µ method is done for 2DoF airfoil with quasi-steady aerodynamics having uncertainties in the structural and aerodynamic properties. Further, the robust flutter boundary of 2DoF airfoil with Theodorsen’s unsteady aerodynamics is studied using µ method in the presence of stiffness, damping, and aerodynamic uncertainties.

Access

Check availability in my library

Order at Subito €

Export, share and cite

Document information

Title :

Robust Flutter Prediction of an Airfoil Including Uncertainties

Additional title:

Lect.Notes Mechanical Engineering

Contributors:

Kumar, S. Kishore (editor) / Narayanaswamy, Indira (editor) / Ramesh, V. (editor) / Kumar, A. Arun (author) / Onkar, Amit Kumar (author)

Published in:

Design and Development of Aerospace Vehicles and Propulsion Systems ; Chapter : 22 ; 305-314

Lecture Notes in Mechanical Engineering

Publication date :

2021-03-19

Size :

10 pages

ISBN :

978-981-15-9601-8 , 978-981-15-9600-1

ISSN :

2195-4364 , 2195-4356

DOI :

https://doi.org/10.1007/978-981-15-9601-8_22

Type of media :

Article/Chapter (Book)

Type of material :

Electronic Resource

Language :

English

Keywords :

2DoF airfoil , Uncertainty , LFT , <italic>µ</italic>-method , Robust flutter Engineering , Aerospace Technology and Astronautics , Fluid- and Aerodynamics , Engineering Fluid Dynamics

Similar titles

Uncertainties Quantification of CFD-Based Flutter Prediction

Righi, Marcello / Greco, Pietro / Da Ronch, Andrea | AIAA | 2021

UNCERTAINTIES QUANTIFICATION OF CFD-BASED FLUTTER PREDICTION

Righi, Marcello / Greco, Pietro / Ronch, Andrea Da | TIBKAT | 2021

Robust Flutter Analysis of an Airfoil with Flap Freeplay Uncertainty

Gu, Y. / Yang, Z. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2008

Robust Flutter Analysis of an Airfoil with Flap Freeplay Uncertainty

Gu, Yingsong / Yang, Zhichun | AIAA | 2008

Uncertainties in Prediction of Wind Turbine Blade Flutter

Resor, B. / Paquette, J. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2011

Access

Check availability in my library

Order at Subito €

Page navigation

Document information

Export, share and cite