Aircraft come in many different shapes, sizes, functions, and applications. Because of this, varying materials are used depending on the plane’s performance needs. Early aircraft such as the Wright Flyer were built with wood and fabric. The aircraft frame was constructed with spruce and ash and much of the surface was covered with muslin, a plain cotton fabric. Modern aircraft are made from metal or composites like carbon-fiber and fiberglass, or a combination of these. Here is a rundown of some of the materials used in aircraft today.