Fabrication of the twist morphing wing for the UAV by CFRP with applying the electrodeposition resin molding method

摘要

The fixed-wing UAV is recently increasing for various missions. For an efficient flight of the UAV, a morphing wing is expected. In this study, the twist morphing wing that deforms entire surface was focused. The twist morphing wing using the Z-shaped cross-sectional spar (Z-spar) was designed and fabricated by CFRP with applying the electrodeposition resin molding (ERM) method. The F.RM method, which was developed by the authors, is suitable for the integral molding of three-dimensional structure of CFRP since the resin is impregnated between carbon fibers in the electrodeposition solution. The frontward structure of the morphing wing consisting of the leading edge and Z-spar could be integrally molded by ERM method. Also, for the backward of the wing, CFRP thin plates fabricated by ERM method were installed for upper and lower surface. The plates next to each other were partially overlapped with imitating the bird's feathers. Additionally, the twist morphing wing was installed to the UAV and the aerodynamic performances were evaluated by the wind tunnel test. As a result, the effect of the morphing on the aerodynamic performances was confirmed.