Roll Control of a MALE UAV using the Adaptive Torsion Wing

RM Ajaj, MI Friswell, WG Dettmer (Swansea University), AT Isikveren (Bauhaus Luftfahrt e.V., Germany) & G Allegri (University of Bristol)

The Aeronautical Journal, Vol. 117, No. 1189, March 2013, paper number 3809, pp. 299-314

Abstract

This paper assesses the feasibility of the Adaptive Torsion Wing (ATW) concept to replace conventional ailerons and enhance the manoeuvrability of a MALE UAV. The ATW concept is a thin-walled closed section two-spar wingbox whose torsional stiffness can be adjusted through the chord-wise position of the front and rear spar webs. The reduction in torsional stiffness allows external aerodynamic loads to induce aeroelastic twist that can be used as a function of the flight conditions to obtain a desired roll control authority. Modelling of the concept was performed using a conceptual design tool developed in MATLAB. The variation of structural figures of merit are evaluated and discussed. Finally, an MDO study was performed to have in-depth assessments of the potential benefits of the ATW in replacing ailerons and providing sufficient roll control.

Paper Availability

This material has been published in the The Aeronautical Journal, Vol. 117, No. 1189, March 2013, paper number 3809, pp. 299-314 the only definitive repository of the content that has been certified and accepted after peer review. Copyright and all rights therein are retained by the Royal Aeronautical Society.


Link to paper using doi: 10.1017/S0001924000008009

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The Aeronautical Journal