Flutter Analysis of an F-16A/B in Heavy Store Configuration

Bennani, Samir; Beuker, Bert; Staveren, J.W. van; Meijer, J.J.

doi:10.2514/1.7339

Cited by 13 publications

(16 citation statements)

References 17 publications

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“…This approach has been applied to aeroelastic systems in the last two decades [20], [8], [9], but some drawbacks can be observed in relation to: accuracy of the LFT; uncertainty descriptions allowed; and computational efficiency. Since it relies on a polynomial interpolation, the accuracy of the numerical LFT depends on the uncertainty set considered.…”

Section: A State Of Practice and Current Limitationsmentioning

confidence: 99%

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A symbolic LFT approach for robust flutter analysis of high-order models

Iannelli

Marcos

Bombardieri

et al. 2019

2019 18th European Control Conference (ECC)

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The paper proposes an alternative methodology to build Linear Fractional Transformation (LFT) models of uncertain aeroelastic systems described by Fluid-Structure Interaction (FSI) solvers with the aim of studying flutter with the µ analysis technique from robust control. Two main issues can be identified for the fulfillment of this task. On the one hand, there is the difficult reconciliation between sources of physical uncertainty (well distinguishable in the original highorder system) and the abstracted uncertainties (defined in the reduced-order size representation used for the robust analyses). On the other hand, the large size of the resulting LFT model can prevent the application of robust analysis techniques. The solution proposed here consists of a symbolic LFT algorithm applied at FSI solver level, which guarantees the connection between the physical uncertainties and the parameters captured by the LFT. It also alleviates the final size of the LFT by exploiting the modal-oriented approach taken in introducing the uncertainties. Application of the framework using an unconventional aircraft layout as case study is finally discussed.

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Section: A State Of Practice and Current Limitationsmentioning

confidence: 99%

“…For example, in [5], [6] the uncertainties in the structural operators consisted of modal quantities (e.g. natural frequencies), whereas [8], [9] considered physical sources of uncertainties but the examples were restricted to a small number, and specific types, of parameters.…”

Section: Introductionmentioning

confidence: 99%

A symbolic LFT approach for robust flutter analysis of high-order models

Iannelli

Marcos

Bombardieri

et al. 2019

2019 18th European Control Conference (ECC)

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show abstract

“…The issue of representing the aeroelastic behavior of an aircraft in linear fractional form has already been addressed in several papers, but most of them assume that a reasonable-size analytical expression is available (see e.g. Baldelli, Lind, & Brenner, 2005;Bennani, Beuker, van Staveren, & Meijer, 2005). Nevertheless, this assumption does not always hold in practice.…”

Section: Context and Motivationsmentioning

confidence: 99%

Generation of a reduced-order LPV/LFT model from a set of large-scale MIMO LTI flexible aircraft models

Poussot-Vassal

Roos

2012

Control Engineering Practice

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“…Other works that have addressed aeroelastic studies by means of robustness tools include: [11], which focused on model reduction, and [12] where dierent approaches for in-ight utter analysis were investigated.…”

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confidence: 99%

Study of Flexible Aircraft Body Freedom Flutter with Robustness Tools

Iannelli

Marcos

Lowenberg

2018

Journal of Guidance, Control, and Dynamics

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General rightsThis document is made available in accordance with publisher policies. Please cite only the published version using the reference above. Full terms of use are available: http://www.bristol.ac.uk/pure/about/ebr-terms Features that complicate its study are the presence of multiple modal instabilities, and the dierent inuence that system parameters have on each of them. The robust analysis framework based on Linear Fractional Transformation modeling and structured singular value µ analysis is used in this work to study the BFF problem in a systematic way. The analyses performed showcase the potential of these methods, not only in supplying a characterization of the system in terms of its robustness, but also in gaining further understanding of the BFF problem and reconciling the results with physical features. It is also shown that the robust modeling analysis framework complements the conventional, state of practice, methods while allowing the study of highly coupled systems (of which the exible aircraft is an example) to be addressed in an incremental and methodological manner.

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Flutter Analysis of an F-16A/B in Heavy Store Configuration

Cited by 13 publications

References 17 publications

A symbolic LFT approach for robust flutter analysis of high-order models

A symbolic LFT approach for robust flutter analysis of high-order models

Generation of a reduced-order LPV/LFT model from a set of large-scale MIMO LTI flexible aircraft models

Study of Flexible Aircraft Body Freedom Flutter with Robustness Tools

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