About Quadcopter Frames
Quadcopters are rotocraft which can trace their history back to the early days of powered flight. The first to actually lift off the ground achieved this feat in 1907. Some manned designs appeared in the 1920s and 1930s, which were among the first successful vertical take off and landing vehicles.
A quadcopter design consists of four radial arms extended from a central hub, at the ends of which are upward or downward facing propellers, generally quad copter specific. Each of theses rotors produces both torque and thrust, and directional flight is achieved by mismatching the aerodynamic torque balance. The result is a very stable yet highly manoeuvrable aircraft with a relatively high payload capability. In recent years these designs have been adopted in unmanned aerial vehicle research. Such craft use electronic sensors and an electronic control system. Due to the relative ease with which such remote controlled Quadcopters can be constructed and controlled, they are often used in amateur model aircraft projects. Over the last decade advances in microelectronics, light weight materials and battery technology have turned what was previously an expensive hobby into something altogether more affordable. Due to their small size and manoeuvrability in the air, model quad copters can even be flown indoors.
Quadcopter kits are available. These are built up from an initial frame made from such materials as carbon fibre, glass fibre and aluminium tube. Such frames can be purchased on their own so the enthusiast can put together his own bespoke design. Separate replacement frame arms are also offered.