The values of objective function (OF) in terms of percentage improvement obtained by applying the MCSA and selective rerouting simultaneously in comparison with the best performing individual dispatching rule with selective rerouting as defined in section 4 at different values of MTTR
and breakdown level is summarized in Table II.
was selected as a key component for analysis since it is a significant piece of the depot repair turn around time.
If the MTBF and MTTR
of a component are known, its availability can be computed using the following equation:
The MTBA was just over an hour, and the MTTR
was three minutes for full exhaust and one minute when splicing was used.
Both units are designed with features that improve reliability, functionality, MTBF (mean time between failures) and MTTR
(mean time to repair).
The new HPA allows for a switchless redundancy, configurable RF output power and extremely low MTTR
using interchangeable RF plug-in modules.
Analyzing this formula it can be said that we want MTTF to be big and MTTR
to be small or in other words, an effective way to increase a system's availability is to improve its maintainability by minimising the downtime (Stapelberg, 2008).