
16 ◾ System Instantaneous Availability
supportability ranges from the equipment itself to the equipment support system.
From the perspective of instantaneous availability study, involved parameters are
mainly a description of support-system operation.
2.2.2.1 Probability Distribution Function of Logistic Delay
Suppose random variable Z (Z ≥ 0) is the product logistic delay time. e distribu-
tion function is
S(t) = P {Z ≤ t}, t ≥ 0. (2.18)
is is called the probability distribution function of accumulated logistic
delay.
e probability distribution function of accumulated logistic delay can reflect
the probability of Z (the duration of completi ...