Integrated optimization of control surface layout for gust load alleviation

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Integrated optimization of control surface layout for gust load alleviation

Pusch, Manuel / Knoblach, Andreas / Kier, Thiemo

Abstract Considering active gust load alleviation (GLA) during aircraft design offers great potential for structural weight savings. The effectiveness of a GLA control system strongly depends on the layout of available control surfaces, which is investigated in this article. For the purpose of wing load reduction, a concurrent optimization of controller gains and aileron geometry parameters is carried out. To that end, an efficient update routine for the nonlinear model of a large-scale flexible aircraft with unsteady aerodynamics is presented. Compared to a GLA system using the original aileron configuration, a 9% performance improvement is achieved. Furthermore, a trade-off study is carried out which enables a target-oriented balancing between individual load channels. The significant influence of aileron size and position on overall GLA performance is demonstrated and hence a consideration during the preliminary aircraft design process is recommended.

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Document information

Title :

Integrated optimization of control surface layout for gust load alleviation

Contributors:

Pusch, Manuel (author) / Knoblach, Andreas (author) / Kier, Thiemo (author)

Published in:

CEAS Aeronautical Journal ; 10 , 4

Publication date :

2019

ISSN :

1869-5582

DOI :

https://doi.org/10.1007/s13272-019-00367-4

Type of media :

Article (Journal)

Type of material :

Language :

English

Keywords :

Luftfahrttechnik , Raumfahrttechnik

Classification :

BKL:		50.03 Methoden und Techniken der Ingenieurwissenschaften / 50.03 Methoden und Techniken der Ingenieurwissenschaften, Methoden und Techniken der Ingenieurwissenschaften / 55.50 Luftfahrzeugtechnik / 55.50 Luftfahrzeugtechnik, Luftfahrzeugtechnik
DDC:		629.105