biplane

A biplane is an aircraft with two main wings stacked one above the other, unlike typical planes with a single wing on each side. This configuration was common in early aviation because it provides extra lift and stability, allowing the plane to carry more weight or fly at slower speeds. The two wings are connected by struts and wires for support. While biplanes offer good maneuverability and were popular in the early 20th century, modern aircraft typically use a single wing design for efficiency and aerodynamic advantages.