Kinematical synthesis of an inversion of the double linked fourbar for morphing wing applications

Abstract

This paper presents the kinematical features of an inversion of the double linked fourbar for morphing wing purposes. The structure of the mechanism is obtained using structural synthesis concepts, from an initial conceptual schematic. Then, kinematic characteristics as instant center of rotation, lock positions, dead point positions and uncertainty positions are derived for this mechanism in order to face the last step, the dimensional synthesis; in this sense, two kinds of dimensional synthesis are arranged to guide the wing along two positions, and to fulfill with the second one some aerodynamic and minimum actuation energy related issues.

Key words： morphing wing; structural synthesis; dimensional synthesis; geometrical kinematics

Acknowledgements

The authors wish to acknowledge the financial support received from the Department of Research and Universities of the Basque Government and the Ministry of Science and Innovation of Spain, trough the research project reference DPI2009-07900 “Methods for the Analysis and Design of Variable Geometry Trusses in Morphing Aircraft Applications”.

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