| After the successful flight of the man-carrying vehicle | | | | airplane is controllable during flight. Usually the fulcrum |
| made by the Wright brothers, interest in aviation | | | | or center of gravity is located ¼ of the wing chord. |
| spread rapidly and many models were made. Model | | | | Balancing it is by placing your fingers on both sides of |
| airplane enthusiasts are already existing in the early | | | | the wing, then relocating the receiver, batteries and |
| 1900s'. Most of the models are rubber powered, | | | | servos until the airplane is balanced. |
| twining type with double stick fuselages that are | | | | You may ask why the center of gravity is located ¼ |
| common in Europe. But even in the early days of | | | | of the wing chord? It has something to do with |
| model flying, small petrol and compressed air engines | | | | aerodynamic center, neutral point that can be |
| are already being used. The materials used in model | | | | explained in detail with some illustrations by following |
| constructions are birch strips, veneer, spruce, piano | | | | the link on the bottom. |
| wire or bamboo and oiled silk covering. | | | | When you look at the cross section of the wing, the |
| Then balsa structure and tissue covering appeared in | | | | shape is called an airfoil. Basically the airfoil consist of |
| the United States in the late 1920s'. So much for the | | | | upper and lower camber, leading and trailing edge. |
| history of model aircraft. So you see, even today, the | | | | When the airplane is flying, there are aerodynamic |
| airplane structure and how it fly is nodifferent from the | | | | forces that interact with the wings, vertical and |
| one we are flying today. The wings, fuselage, vertical | | | | horizontal stabilizers because the airplane is going |
| and horizontal stabilizers, propellers, engines, landing | | | | against the air or commonly called "relative wind". Then |
| gears are the same. The airplane, to fly and have | | | | it creates a variance of pressure on the upper versus |
| control during flight uses them. The wings are obviously | | | | the lower camber of the airfoil (or the wing itself) |
| responsible why the airplane canstay in the air for a | | | | which generates lift. The air that passed the lower |
| long time. With proper design of the airplane, | | | | camber should have a higher pressure against the |
| dimensions, weight considerations and aerodynamic | | | | upper camber to sustain flight. This has something to |
| design characteristics it will fly successfully. The | | | | do with law of continuity. The air molecules that |
| aerodynamic principles behind it is what really makes it | | | | separates from the leading edge, going to the upper |
| fly. But even though it has a good design, weight and | | | | and lower camber, should meet at the trailing edge at |
| balance plays a major role. There was a saying that | | | | the same time. Since the upper camber has a greater |
| "a feather flies better than a brick" which is true | | | | curve than the lower camber, the distance on the |
| because a very heavy airplane won't fly if it cannot be | | | | upper camber is longer and therefore requires more |
| sustained by its power plant (engine, propeller, and fuel | | | | velocity to meet the air on the lower camber. |
| tank). And with regards to balancing, a well-balanced | | | | |