An operating orbit system with two dissimilar units and corresponding standbys

Abstract

The paper deals with a stochastic model of an orbit system consisting of two dissimilar units and two standby units to replace the corresponding failed units of the orbit. The orbit functions when both of its units are good and one is operative. An operating unit of the orbit stops functioning if it reaches at a specified temperature; in this case the other unit of the orbit becomes operative immediately and visa-versa. The system fails completely if at least two similar units fail. The repair of the system is performed only when the system fails completely. Various measures of system effectiveness of interest to system designers and operations managers are obtained by using supplementary variable technique.

Keywords:

• Reliability
• availability
• MTSF
• expected busy period
• expected up time