Static Aeroelastic Response of Chiral-core Airfoils

Extensive research is being devoted to the analysis and application of cellular solids for the design of innovative structural components. The chiral geometry in particular features a unique mechanical behavior which is here exploited for the design of 2D airfoils with morphing capabilities. A coupled-physics model, comprising computational fluid dynamics and structural analyses, investigates the influence of the chiral core on the aerodynamic behavior of the airfoil. Specifically, the model predicts the static deflection of the airfoil as a result of given flow conditions. The morphing capabilities of the airfoil, here quantified as camber changes, are evaluated for various design configurations of the core.

[1]  Massimo Ruzzene,et al.  Dynamic Response of Chiral Truss-core Assemblies , 2006 .

[2]  Fabrizio Scarpa,et al.  Evaluation of hexagonal chiral structure for morphing airfoil concept , 2005 .

[3]  Daniel J. Inman,et al.  Aerodynamic and Aeroelastic Considerations of A Variable- Span Morphing Wing , 2004 .

[4]  Tim Smith,et al.  Morphing Inflatable Wing Development for Compact Package Unmanned Aerial Vehicles , 2004 .

[5]  J. N. Kudva,et al.  Overview of the DARPA Smart Wing Project , 2004 .

[6]  Anna-Maria Rivas McGowan,et al.  Biologically inspired technologies in NASA's morphing project , 2003, SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[7]  M. Trenker,et al.  Design Concepts for Adaptive Airfoils with Dynamic Transonic Flow Control , 2003 .

[8]  Terrence A. Weisshaar,et al.  Identification of military morphing aircraft missions and morphing technology assessment , 2002, SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[9]  D. Sachau,et al.  Design Aspects of the Elastic Trailing Edge for an Adaptive Wing , 2000 .

[10]  L. F. Campanile,et al.  The Belt-Rib Concept: A Structronic Approach to Variable Camber , 2000 .

[11]  Elmar Breitbach,et al.  Adaptive rotor blade concepts: direct twist and camber variation , 2000 .

[12]  R. Lakes,et al.  Properties of a chiral honeycomb with a poisson's ratio of — 1 , 1997 .

[13]  Bijan Mohammadi,et al.  Fluid dynamics computation with NSC2KE : an user-guide : release 1.0 , 1994 .

[14]  Asme,et al.  A collection of technical papers : 34th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference AIAA/ASME Adaptive Structures Forum April 19-22, 1993/LA Jolla, CA , 1993 .

[15]  R. Cook,et al.  Concepts and Applications of Finite Element Analysis , 1974 .