The integration of auxetic metamaterials into aerospace components, particularly airfoils, with additive manufacturing represents a promising avenue for enhancing structural efficiency and performance. This study explores the utilization of auxetic structures, characterized by a negative Poisson's ratio, within airfoil designs to optimize mechanical properties while minimizing weight. There are distinct patterns in auxetic structures that address specific needs of a mechanical property. Among these auxetic patterns, the Re-Entrant Chiral Auxetic (RCA) structure emerges as particularly promising due to its superior Specific Energy Absorption (SEA) value and relatively lower density compared to other auxetic designs within the same volume. The RCA pattern, which combines the advantageous features of re-entrant and chiral honeycombs, exhibits enhanced energy absorption and mechanical resilience crucial for aerospace structures. Theoretically, this study investigated recent auxetic structures with focusing on static analysis and explicit analysis of specific RCA lattice structures. The analysis focused on how different parameter configurations affect their performance in RCA configuration. Experimentally, this research involved the manufacturing of 16 different RCA structures utilizing a 3D printer with the Fused Deposition Modeling (FDM) method and Hyper PLA filament, followed by mechanical testing of these patterns and the integration of an RCA lattice structure into the NACA 4415 airfoil profile. By exploiting the unique properties of auxetic structures, such as enhanced flexibility, adaptability, and energy absorption, engineers can achieve lightweight, yet robust airfoil configurations optimized for diverse operating conditions.