Analysis of Mission-Oriented Systems

Several measures of system reliability that are applicable to a mission-oriented or time-dependent system are defined: 1) the probability that the system is in a given state at the end of a given mission phase; 2) the probability density function of the random variable time spent in a state, given that the system has just transited into that state; 3) the probability of mission success. Equations for 1)-3) are derived, and an application of the formulas performed for the Naval Air Development Center, Johnsville, Pa., is discussed.