Roll control of a UAV using an Adaptive Torsion Structure

R. M. Ajaj, M. I. Friswell, D. D. Smith, G. Allegri, A. T. Isikveren

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

10 Scopus citations

Abstract

This paper presents a novel Active Aeroelastic Structure (AAS) concept and performs a multidisciplinary design optimization (MDO) study by employing this aforementioned concept in a UAV wing to provide roll control, i.e. for replacing conventional ailerons. The Adaptive Torsion Structure (ATS) concept allows varying the torsional stiffness of a two-spar wing-box by changing the relative chord-wise positions of the front and rear spar webs. Each side of the wing is divided into five equal partitions from root to tip, and the ATS concept is employed along each partition. At the ends of each partition, connecting ribs join individual ATS units. Those ribs allow the spar webs of each partition to translate independently of the spar webs of the adjacent partitions and maintain continuous load path across the wing-box. An MDO suite consisting of the Genetic Algorithm (GA) optimizer coupled with a high-end low-fidelity aero-structural model was developed and employed to maximize the rolling moment generated by the wing under pre-defined structural and control constraints. The study is conducted at three different points across the climb segment of the UAV, namely: start of climb, mid climb, end of climb/initial cruise.

Original languageBritish English
Title of host publication52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
DOIs
StatePublished - 2011
Event52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference - Denver, CO, United States
Duration: 4 Apr 20117 Apr 2011

Publication series

NameCollection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
ISSN (Print)0273-4508

Conference

Conference52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
Country/TerritoryUnited States
CityDenver, CO
Period4/04/117/04/11

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