Variable camber structure for aircraft wing based on zero Poisson's ratio lattice structure

Morphing aircraft represent one of the most advanced aviation technology development directions in the future, and the variable camber wing that requires both rigidity and flexibility, although technically difficult, is currently the most feasible and highly profitable aviation morphing wing solution in terms of engineering feasibility. This paper proposes a Variable Camber Wing Structure (VCWS) based on zero Poisson's ratio lattice structure, enabling smooth, continuous, and significant shape changes in the wing to enhance the aerodynamic performance. By integrating zero Poisson’s ratio lattice structure, servo-driven actuators, and eccentric lever transmission mechanisms, the conceptual design of this structure is described in detail. Specimens of zero Poisson’s ratio lattice structures were fabricated and subjected to tensile testing, and the excellent deformation capability was validated through numerical simulation and analytical modeling. Based on this, a VCWS was designed and fabricated, followed by functional validation tests. Experimental results show that the VCWS successfully achieves both upward and downward deflection. Through numerical simulation and analytical modeling, the driving forces and deformation were predicted, and the results matched the experimental results, proving the feasibility and effectiveness of the design. This structure offers a more flexible and efficient solution for VCWS in future aircraft.