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Unit information: Aeroelasticity in 2015/16

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Unit name Aeroelasticity
Unit code AENG30007
Credit points 10
Level of study H/6
Teaching block(s) Teaching Block 2 (weeks 13 - 24)
Unit director Professor. Cooper
Open unit status Not open

AENG21301 Vibrations 2



School/department Department of Aerospace Engineering
Faculty Faculty of Engineering

Description including Unit Aims

To develop an understanding of aeroelastic behaviour of aerospace structures, covering static and dynamic aspects of attached and separated flows. Content: Instabilities of non-aerodynamic self-excited systems Static aeroelasticity - 3D wings divergence/control reversal. Unsteady aerodynamics - Wagner & Theodorsen functions. Flutter 3D Wings: binary flutter, solution of flutter equations, frequency matching, control surface flutter, flight flutter testing. Prediction of flutter speed from flight test results. Non-linear aeroelasticity stall flutter, buffet, buzz, Limit Cycle Oscillations, affect of structural non-linearities, aeroservoelasticity, transonic effects, vortex shedding. Gusts simple gusts analysis. Kussner and Sears functions. Discrete tuned gusts Aeroservoelasticity loads alleviation and flutter suppression. Certification and airworthiness issues.

Intended Learning Outcomes

On successful completion the student should be able to:- 1.1 Determine criterion for stability of systems subject to follower forces 1.2 Perform divergence and control reversal calculations 1.3 Predict onset of flutter for binary systems 1.4 Predict flutter onset based upon sub-critical measurements 1.5 Understand the effect of unsteady aerodynamics on aeroelastic calculations 1.6 Understand the effect of non-linearities on aeroelastic behaviour.

Teaching Information

Lectures, example classes and design exercises / laboratory

Assessment Information

20% Assessed Coursework - (LOs 1.3, 1.4) 80% 2 hour exam, 3 questions out of 5 (LOs 1.1, 1.2, 1.3, 1.4, 1.5, 1.6)

Reading and References

Introduction to Aircraft Aeroelasticity and Loads. J.R. Wright and J.E. Cooper. 2nd ed: Wiley 2014. Introduction to Structural Dynamics and Aeroelasticity. D H Hodges and G A Pierce 2nd Ed Cambridge Press: 2014.