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Unit information: Aeroelasticity in 2020/21

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Unit name Aeroelasticity
Unit code AENGM0069
Credit points 10
Level of study M/7
Teaching block(s) Teaching Block 2 (weeks 13 - 24)
Unit director Professor. Cooper
Open unit status Not open
Pre-requisites

AENG21301 Vibrations 2

Co-requisites

None

School/department Department of Aerospace Engineering
Faculty Faculty of Engineering

Description

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 nonlinearities, aeroservoelasticity, transonic effects, vortex shedding.
• Gusts - simple analysis for discrete gusts and random turbulence
• Kussner and Sears functions.
• Aeroservoelasticity - loads alleviation and flutter suppression.
• Certification and airworthiness issues.

Intended learning outcomes

On successful completion the student should be able to:
1 Perform divergence and control reversal calculations
2 Determine flutter stability boundaries for binary aeroelastic systems
3 Evaluate the response of an aeroelastic system to atmospheric gusts
4 Explain the effect of unsteady aerodynamics and nonlinearities on aeroelastic behaviour

Teaching details

Teaching will be delivered through a combination of synchronous and asynchronous sessions, which may include lectures, practical activities supported by drop-in sessions, problem sheets and self-directed exercises.

Assessment Details

100% portfolio

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.

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