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Design and Multi-Objective Optimization of a Control Surface Allocation Concept for an Agile and Highly Swept Flying Wing

Kiehn, Daniel and Diekmann, Jobst Henning and Fezans, Nicolas (2018) Design and Multi-Objective Optimization of a Control Surface Allocation Concept for an Agile and Highly Swept Flying Wing. Deutscher Luft- und Raumfahrtkongress 2018, 04.-06. Sept. 2018, Friedrichshafen, Deutschland.

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The aim of the DLR project Mephisto is to establish a multidisciplinary design approach for an effective, agile combat air vehicle by using computational methods and/or simulation-based assessments only. The highly swept generic flying wing configuration MULDICON is equipped with various multifunctional control surfaces and flaps at the trailing edges of the airfoil including split flaps at the trailing edges of the wing tips. Contrary to more conventional aircraft configurations with horizontal and vertical stabilizers (e.g. tube-wing-tail), the combination of this control surface setup and the lack of a tail introduces strong couplings in the forces and moments resulting from each control surface deflection such that simple control allocation strategies (e.g. ailerons for roll, elevator for pitch, etc.) are suboptimal, if even practicable. The control surface allocation concept presented in this paper provides a multi-objective optimized solution for control system inputs that minimizes the control surface deflections as well as the resulting drag while fulfilling the hard constraints in terms of rotational acceleration commands. Furthermore, enabled by modern computational performance and efficient algorithm design, an online optimization was established capable of optimizing the allocation for each time step of a predefined maneuver simulation. This concept grants a controller maximum authority when integrated in the overall aircraft control system.

Item URL in elib:https://elib.dlr.de/125264/
Document Type:Conference or Workshop Item (Speech)
Title:Design and Multi-Objective Optimization of a Control Surface Allocation Concept for an Agile and Highly Swept Flying Wing
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Kiehn, DanielDaniel.Kiehn (at) dlr.dehttps://orcid.org/0000-0001-7383-0740
Diekmann, Jobst HenningJobst.Diekmann (at) dlr.dehttps://orcid.org/0000-0002-5813-0364
Fezans, NicolasNicolas.Fezans (at) dlr.dehttps://orcid.org/0000-0003-4351-3474
Date:6 September 2018
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Control allocation concept, Steuerkonzept, Optimierung, MULDICON, MEPHISTO
Event Title:Deutscher Luft- und Raumfahrtkongress 2018
Event Location:Friedrichshafen, Deutschland
Event Type:national Conference
Event Dates:04.-06. Sept. 2018
Organizer:Deutsche Gesellschaft für Luft- und Raumfahrt (DGLR)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Military Technologies (old)
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Flight Dynamics and Simulation
Deposited By: Kiehn, Daniel
Deposited On:17 Dec 2018 15:56
Last Modified:17 Dec 2018 15:56

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