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Robust Performance Analysis Applied to Gust Loads Computation

Knoblach, Andreas (2013) Robust Performance Analysis Applied to Gust Loads Computation. Journal of Aeroelasticity and Structural Dynamics, 3 (1), 39 - 50. Department of Aerospace Engineering of Politecnico di Milano. DOI: 10.3293/asdj.2013.21 ISBN 1974-5117 ISSN 1974-5117

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Official URL: http://www.asdjournal.org/index.php/ASD/article/view/21

Abstract

This paper demonstrates how the robust performance analysis framework can be used to determine worst case loads of flexible aircraft due to 1-cos gusts. This framework is a part of control theory and is used to characterize a system by input-output norms: e.g. the induced L2-L∞ norm represents the worst case energy-to-peak gain. Two very efficient ways to compute this norm are presented. Based on the physical interpretation of this norm, an aircraft model is weighted such that the induced L2-L∞ norm of the weighted system represents a close but guaranteed upper bound for 1-cos gusts and similar excitations. The analysis results are compared to simulations. Since the energy-to-peak gain can be computed in a very efficient way for LTI models, the norm is used to quickly obtain an upper bound for loads and to identify critical flight conditions. In a second example, the analysis is additionally performed on an uncertain mode

Item URL in elib:https://elib.dlr.de/87039/
Document Type:Article
Title:Robust Performance Analysis Applied to Gust Loads Computation
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Knoblach, AndreasAndreas.Knoblach (at) DLR.deUNSPECIFIED
Date:14 December 2013
Journal or Publication Title:Journal of Aeroelasticity and Structural Dynamics
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:3
DOI :10.3293/asdj.2013.21
Page Range:39 - 50
Publisher:Department of Aerospace Engineering of Politecnico di Milano
ISSN:1974-5117
ISBN:1974-5117
Status:Published
Keywords:Robust performance analysis, Loads analysis, Discrete gust loads, Worst case loads, Uncertain models
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Systems & Cabin (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of System Dynamics and Control > Aircraft System Dynamics
Deposited By: Knoblach, Andreas
Deposited On:20 Jan 2014 14:44
Last Modified:31 Jul 2019 19:44

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