A high assurance on-line recovery technology for a space on-board computer

A high assurance on-line recovery technology for a space on-board computer that can be realized using commercial devices is proposed whereby a faulty processor node confirms its normality and then recovers without affecting t he other processor nodes in operation. Also, the result of an evaluation te st using the breadboard model implementing this technology is reported. Bec ause this technology enables simple and assured recovery of a faulty proces sor node regardless of its degree of redundancy, it can be applied to vario us applications, such as a launch vehicle, a satellite, and a reusable laun ch vehicle. As a result, decreasing the cost of an on-board computer is pos sible while maintaining its high reliability.