What is airplane spars?

Airplane spars are the main structural components of an airplane's wings. They are long, thin beams that run the length of the wing, providing support and strength to the structure.

The most common material used for airplane spars is aluminum alloy, due to its strength and lightweight properties. The thickness and shape of the spar varies depending on the size and design of the airplane, as well as the expected forces and stresses the wing will experience during flight.

In addition to supporting the weight of the wing and the aircraft, the spars also help to distribute the aerodynamic forces that act on the wing during flight. As a result, they must be designed and manufactured to withstand significant stress, such as bending, twisting, and compression.

Overall, airplane spars play a critical role in the performance and safety of an aircraft, and must be carefully designed and manufactured to meet strict industry standards and regulations.