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Aerodynamic Load Control in Lightweight Air Vehicles and Wind Turbines

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Abstract:
We are mainly concerned with aeroelastic systems built with very flexible structures. Aeroelastic effects may be positively exploited in those cases, using load control strategies that reduce structure integrity risk under adverse gusts and atmospheric turbulence. This talk will present first an overview of our efforts in the modeling and simulation of the dynamics and control of large (solar-powered) UAVs, with an emphasis on the nonlinear effects arising from large deformations that may occur in very lightweight wings. The structural model is obtained via homogenization of the periodic wing structure. Potential-flow unsteady aerodynamics are then solved using a boundary element description that follows the lifting surfaces in their large excursions. Control strategies for gust load alleviation, based on local linearization of the system, will be discussed. Similar methods has been applied to fatigue load reduction on large composite wind-turbine blades under atmospheric turbulence and they will be finally discussed.

Type of Seminar:
IfA Seminar
Speaker:
Rafael Palacios
Faculty of Engineering, Department of Aeronautics, Imperial College London¨
Date/Time:
Nov 06, 2014   14:15
Location:

HG E 33.1
Contact Person:

Manfred Morari
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Biographical Sketch:
Rafael Palacios is Reader in Aeronautics at Imperial College London, where he has been since 2007. He holds an Aeronautical Engineer degree from Universidad Politécnica, Madrid (1998) and a PhD in Aerospace Engineering from the University of Michigan (2005). Between 1998 and 2001 he worked at EADS’ Structural Dynamics and Aeroelasticity Department, near Madrid. During his PhD Rafael was first a Fulbright fellow and then a François-Xavier Bagnoud fellow. In 2005 he was recipient of an AIAA Foundation Orville and Wilbur Wright Graduate Award. He was the college’s Best Supervisor in the 2013 Student Academic Choice Awards.