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The hexachiral prismatic wingbox concept
Author(s) -
Martin Jamie,
HeyderBruckner JeanJacques,
Remillat Chrystel,
Scarpa Fabrizio,
Potter Kevin,
Ruzzene Massimo
Publication year - 2008
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200777709
Subject(s) - camber (aerodynamics) , wing , morphing , finite element method , aerodynamics , structural engineering , wind tunnel , flutter , parametric statistics , computer science , engineering , aerospace engineering , mathematics , statistics , computer vision
In this work the concept of using a chiral honeycomb as the internal structure for a passively morphing wing is explored. The use of a chiral honeycomb, which features an in‐plane negative Poisson's ratio, potentially offers high deformability whilst maintaining structural integrity of the wing box. A finite element simulation was carried out, coupling a complete two‐dimensional model of the wing and internal structure to a panel code flow solver. An iterative process was then used in order to predict the wing camber change with respect to airflow. The concept was validated experimentally through the construction of a prototype wing for wind‐tunnel testing. The measured response was non‐linear with respect to aerodynamic loading, but the final deflected shape at the design case compared well with the finite element prediction. The concept was proven to work for small camber changes, with larger deflections predicted by tailoring the mechanical properties of the hexachiral core. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)