Design proposal and performance specification of data bus network for small aircraft ensuring high reliability

Integrated avionics architecture is desirable for the next generation aircraft. In this regard we have proposed a data bus network for small aircrafts to meet the demand of bandwidth, data transmission rate, immunity to electromagnetic interference, weight and size. In this paper a brief overview is given on present data bus protocols and a comparison is shown between them. Along with this, this paper compares between copper co-axial cables and optical fiber and proposes a data bus network for small aircrafts, its word format, data generation processes and reasons behind choosing such a network are also discussed. It also calculates different technical specifications and related findings through commercially available software, MATLAB to show the optical fiber based network as a reliable and modular system for use in aircrafts.