Multithreading Design of a Reliable Aerospace Computer

A new approach to the organization of a reliable aerospace computer system is described in this paper. The organization is based on the use of a multithreading design in which a multiplicity of paths are available, any of which can perform the minimum data processing functions. The combination of all of the multithreading paths comprises a total data processing system which is capable of handling more than the minimum task for which the highest reliability is required. This approach utilizes active redundancy to provide a higher capability for more extensive data processing tasks during that period in which no failures have occurred. Optimum utilization of system weight is achieved through use of a minimum of inactive redundant hardware.