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Interactions of Aircraft Design and Control: Actuators Sizing and Optimization for an Unstable Blended Wing-Body

Denieul, Yann and Alazard, Daniel and Bordeneuve-Guibé, Joël and Toussaint, Clément and Taquin, Gilles Interactions of Aircraft Design and Control: Actuators Sizing and Optimization for an Unstable Blended Wing-Body. (2015) In: AIAA Atmospheric Flight Mechanics Conference, 22 June 2015 - 26 June 2015 (Dallas, Texas, United States).

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Official URL: http://dx.doi.org/10.2514/6.2015-2553

Abstract

In this paper the problem of integrated design and control for a civil blended wing-body aircraft is addressed. Indeed this configuration faces remarkable challenges related to handling qualities: namely the aircraft configuration in this study features a strong longitudinal instability for some specific flight points. Moreover it may lack control efficiency despite large and redundant movables. Stabilizing such a configuration may then lead to high control surfaces rates, meaning significant energy penalty and installation mass for flight control actuators, as well as challenges for actuators space allocation. Those penalties should therefore be taken into account early in the conceptual design phase, instead of being checked afterwards. Our approach consists in simultaneously designing a stabilizing controller and actuators dynamic characteristics, namely their bandwidth, for a given aircraft configuration. Our method relies on latest developments on nonsmooth optimization techniques for robust control design. For any aircraft configuration, guaranteed stability performance, as well as optimized control surfaces allocation with respect to their relative efficiency and inertia, are obtained. From these results, a segregation among trim and maneuver control surfaces is obtained, with guarantee that the later ones are able to cope with aircraft instability. Then it is checked that remaining trim control surfaces are sufficient for equilibrating the aircraft in any flight condition. This approach allows for a fast prototyping of control surfaces and actuators for unstable configurations. Different control surfaces layouts are evaluated in order to show the exibility of the method.

Item Type:Conference or Workshop Item (Paper)
Additional Information:Thanks to AIAA editor. The definitive version is available at http://arc.aiaa.org/doi/10.2514/6.2015-2553
HAL Id:hal-01413348
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution: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)
Laboratory name:
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Deposited By: Daniel Alazard
Deposited On:09 Dec 2016 15:24

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