The Impact of Aircraft Skin Materials on Fuel Economy

Abstract

Aviation is a vital part of global transportation and faces increasing pressure to reduce fuel consumption and greenhouse gas emissions. Aircraft skin materials, which form the outermost layer of the fuselage and wings, directly impact weight, aerodynamic performance, durability, and maintenance requirements, thus affecting fuel efficiency. This paper systematically reviews the characteristics, advantages, and limitations of metallic, composite, and hybrid/advanced composite aircraft skin materials. Metallic alloys, especially aluminum, dominate current aircraft design because of their affordability and reparability, but they are challenged by corrosion and fatigue. However, high manufacturing costs and complex maintenance procedures remain barriers. Hybrid materials or advanced composite materials, which integrate composites with metals or employ advanced alloys, offer a balance between performance and cost, providing a practical pathway for gradual adoption. The study concludes that future research should focus on material innovation, cost reduction, and sustainability assessment, with composites and hybrids shaping the next generation of aircraft while metals continue to play a role.