# Integrated design of flight control surfaces and laws for new aircraft configurations

Denieul, Yann and Bordeneuve-Guibé, Joël and Alazard, Daniel and Toussaint, Clément and Taquin, Gilles Integrated design of flight control surfaces and laws for new aircraft configurations. (2017) In: IFAC World Congress 2017, 9 July 2017 - 14 July 2017 (Toulouse, France).

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Official URL: http://dx.doi.org/10.1016/j.ifacol.2017.08.2085

## Abstract

Control architecture sizing is a main challenge for new aircraft design like blended wing-body design. This aircraft configuration typically features redundant elevons located at the trailing edge of the wing, acting simultaneously on pitch and roll axes. The problem of integrated design of control surface sizes and flight control laws for an unstable blended wing-body aircraft is addressed here. Latest tools for $H_\infty$ non-smooth optimization of structured controllers are used to optimize in a single step the gains for both longitudinal and lateral control laws, and a control allocation module, while minimizing control surfaces total span. Following constraints are ensured: maximal deflection angles and rates for 1) pilot longitudinal pull-up 2) pilot bank angle order and 3) longitudinal turbulence. Using this coupled approach, significant gains in terms of outer elevons span compared to the initial layout are demonstrated, while closed-loop handling qualities constraints are guaranteed.

Item Type: Conference or Workshop Item (Paper) Vol. 50, n°1 hal-01738089 International conference proceedings Other partners > Airbus (FRANCE)Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)French research institutions > Office National d'Etudes et Recherches Aérospatiales - ONERA (FRANCE) download 20 Mar 2018 09:00

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