The presentation discussed potential applications of nanotechnology in aeronautical engineering. It explained that nanomaterials could make aircraft lighter, stronger, and more durable by enabling advanced composite materials. Specifically, carbon nanotubes could be used to create composites for aircraft structures and components. The presentation also mentioned potential uses of nanotechnology in aerospace paints, sealants, de-icing materials, and jet engines. While applications like space elevators remain speculative, nanotechnology may enable new aircraft that require less fuel and offer greater performance.