Design and Aerodynamic Characteristics Analysis of a Section Morphing Wing Based on Smart Materials

Abstract:

This paper discusses the design of a section morphing wing that permits a change in the wing section while simultaneously supporting structural wing loads. Section morphing wing allows for two discreet airfoil of the wing. The airfoil 1 is original airfoil maintained by NACA 4412 rib sections. The section morphing wing uses shape memory alloy spring actuator to drive wing section deformation. Skins of the section morphing wing uses shape memory polymer. Computational aerodynamics are used to estimate the performance and dynamic characteristics of each wing section of this section morphing wing as its wing section is changed. Results show that when angle of attach (AOA) is 0 deg, the lift-drag ratio decrease as the airfoil thickness decreases when mach number is less than 0.9 and the lift-drag ratio increase as the airfoil thickness decreases when mach number is greater than 0.9. When AOA is 5deg, the lift-drag ratio increase as the airfoil thickness decreases . The lift-drag ratio decrease as the airfoil thickness decreases when mach number is less than 0.7. When AOA is 10deg, the lift-drag ratio increase as the airfoil thickness decreases when mach number is greater than 0.7. We can chose airfoil 1 or airfoil 2 according to variation flight conditions.

• Periodical: Advanced Materials Research (Volumes 753-755)
• Pages: 1764-1767
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.753-755.1764
• Online since: August 2013
• Authors: Yue Min Yu
• Keywords: Angle of Attach, Lift-to-Drag Ratio, Mach Number, Section Morphing Wing

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