Development of moving spars for active aeroelastic structures

Michael Amprikidis; Jonathan E. Cooper

doi:10.1117/12.484662

14 August 2003 Development of moving spars for active aeroelastic structures

Michael Amprikidis, Jonathan E. Cooper

Proceedings Volume 5054, Smart Structures and Materials 2003: Industrial and Commercial Applications of Smart Structures Technologies; (2003) https://doi.org/10.1117/12.484662
Event: Smart Structures and Materials, 2003, San Diego, California, United States

Abstract

This paper describes a research program investigating the development of “moving spars” to enable active aeroelastic control of aerospace structures. A number of different concepts have been considered as part of the EU funded Active Aeroelastic Aircraft Structures (3AS) project that enable the control of the bending and torsional stiffness of aircraft wings through changes in the internal aircraft structure. The aeroelastic behaviour, in particular static deflections, can be controlled as desired through changes in the position, orientation and stiffness of the spars. The concept described in this paper is based upon translational movement of the spars. This will result in changes in the torsional stiffness and shear centre position whilst leaving the bending stiffness unaffected. An analytical study of the aeroelastic behaviour demonstrates the benefits of using such an approach. An experimental investigation involving construction and bench testing of the concepts was undertaken to demonstrate its feasibility. Finally, a wind tunnel test of simple wing models constructed using these concepts was performed. The simulated and experimental results show that it is possible to control the wind twist in practice.

Citation Download Citation

Michael Amprikidis and Jonathan E. Cooper "Development of moving spars for active aeroelastic structures", Proc. SPIE 5054, Smart Structures and Materials 2003: Industrial and Commercial Applications of Smart Structures Technologies, (14 August 2003); https://doi.org/10.1117/12.484662

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