There are a lot of ways to construct a remote controlled airplane. Different kits are available for designing a RC plane. Cost and performance of RC plane is depend on the way of construction. Normally kits are made of foam or plastic or balsa wood. For the construction of fuselage formers and longerons are used. For wings and tail surfaces normally spars and ribs are used. Solid sheets of wood also sometimes used for structure construction. For heavy RC airplane construction a composite wing consisting of expanded polystyrene core covered by the safety veneer of wood is used. If we want to make remote controlled airplane for windless environment, the lightest models are most preferable. 
