Marcello Righi: Catalogue data in Autumn Semester 2020

Name	Prof. Dr. Marcello Righi
Address	Fluiddynamik ETH Zürich, ML H31 Sonneggstrasse 3 8092 Zürich SWITZERLAND
E-mail	righima@ethz.ch
Department	Mechanical and Process Engineering
Relationship	Lecturer

Number	Title	ECTS	Hours	Lecturers
151-0368-00L	Aeroelasticity	4 credits	2V + 1U	M. Righi
Abstract	Introduction to the basics and methods of Aeroelasticity. An overview of the main static and dynamic phenomena arising from the interaction between structural and aerodynamic loads.
Learning objective	The course will provide a basic physical understanding of flow-structure interaction. You will get to know the most important phenomena in the static and dynamic aeroelasticity, as well as a presentation of the most relevant analytical and numerical prediction methods.
Content	Introduction to steady and unsteady thin airfoil theory, extension to three dimension wing aerodynamics, strip theory, overview of numerical methods available (panel methods, CFD). Introduction to unsteady aerodynamics (theory): Theodorsen and Wagner functions. Unsteady aerodynamics observed from numerical experiments (CFD). Generation of simplified mathematical models. Presentation of steady aeroelasticity: equations of equilibrium for the typical section, aeroelastic deformation, effectiveness of the aeroelastic system, stability (definition), divergence condition, role played by a control surface, control effectiveness, sweep angle, aeroelastic tailoring of bending-torsion coupling. Ritz model to model beams, use of FEM, modal condensation, choice of generalized coordinates. Presentation of dynamic aeroelasticity: assessment of dynamic aeroelastic response of simple systems. Flutter kinematics (bending-twisting). Dynamic response of a simplified wing. Numerical aeroelasticity (Test Cases extracted from the latest AIAA Aeroelastic Prediction Workshops). Aeroelasticity of modern aircraft: assessment of the effects induced by the control surfaces and control systems (Aeroservoelasticity), active controlled aircraft, flutter-suppression systems, certification (EASA, FAA). Planning and execution of Wind Tunnel experiments with aeroelastic models. Live-execution of an experiment in the WT of the ETH. Brief presentation of non-linear phenomena like Limit-Cycle Oscillations (LCO)
Lecture notes	A script in English language is available.
Literature	Bispilnghoff Ashley, Aeroelasticity Abbott, Theory of Wing sections, Y. C. Fung, An Introduction to the Theory of Aeroelasticity, Dover Phoenix Editions.