Evolution of Aircraft Flight Control System and Fly-By-Light Flight Control System

In past, the aircraft control systems were based on conventional methods of mechanical and hydro-mechanical system. The present generation aircraft are using fly-by-wire (FBW) and in future likely to migrate to fly-by-light (FBL) method for aircraft control system. Mechanical & Hydromechanical flight control systems have been replaced by FlyBy-Wire due to increasing speed of modern aircraft. Due to inherent characteristics of FBL like light weight, compact size, large bandwidth, immunity to EMI & HIRF FBL, it is expected to be ideal futuristic flight control system. Fly-byLight control systems offer inherent resistance to the new generation more hostile military environments. The inherent features are the motivator to achieve the technological advances to make Fly-by-Light systems a successful replacement aircraft control system technology for future. The application of optical fiber in aviation promises to be very exciting study, covering highly complex aircraft stability and controls. Keywords—Mechanical flight control system, Hydromechanical flight control system, Fly-By-Wire flight control system, Fly-By-Light flight control system.