Aircraft structures refer to the physical components that make up an aircraft, providing support and shape. These structures include the fuselage, wings, tail, and landing gear, all designed to withstand various forces during flight. They are typically made from materials like aluminum, titanium, and composite materials to ensure strength while minimizing weight. The design of aircraft structures is crucial for safety and performance. Engineers use advanced techniques to analyze stress and strain, ensuring that each part can handle the loads experienced during takeoff, flight, and landing. Properly designed structures contribute to the overall efficiency and durability of the aircraft.