Biplane is an aircraft with two wings arranged side by side. Its upper and lower wings are connected into a load-bearing whole by pillars and cables to form a space truss structure. The aircraft with two wings in front and back configuration is called tandem wing aircraft. In the early stage of aircraft development, the engine power was low and the weight was large, and the materials used to build the airframe were mostly wood and Mongolian cloth. In order to solve the problem of lift off, a large wing area is needed to generate enough lift at low speed. The biplane has two wings, and the total wing area is large. In modern aircraft, except for the small aircraft with special requirements for payload and low speed performance, biplane is rare.

An aircraft with two wings arranged side by side. The aircraft with two wings in front and back configuration is called tandem wing aircraft. The upper and lower wings of the biplane are connected with struts and cables to form a load-bearing whole, forming a space truss structure. Biplane is an old style aircraft. In the early stage of aircraft development, the engine power was low and the weight was large, and the materials used to build the airframe were mostly wood and Mongolian cloth. In order to solve the problem of lift off, a large wing area is needed to generate enough lift at low speed. The biplane has two wings, and the total wing area is large.

Source: @_tattoobar_