RBD Analysis

ASENT’s RBD Analysis tool allows you to model a system, using either the Mission Reliability approach or the Reliability with Repair approach to determine system reliability, either in terms of probability of mission success or in terms of Mean Time Between Critical Failure (MTBCF) and Mean Time To Restore Functionality (MTTRF). 

You can perform sensitivity studies as functions of time, discrete events (firings, launches, etc.), system architecture, item reliability or item maintainability.  The tool supports elements modeled in series, parallel, series-parallel combinations, and complex active or standby redundancies. Tradeoffs can be quickly performed to identify a system’s critical functions and reliability choke points as well as determining logistic factors, such as Available Preventive Maintenance Time, System Availability, Logistics (Serial) Reliability.

As the Reliability Product Tree is updated, the RBD Analysis is automatically updated and is easily visible from the product tree! A suite of utilities is provided to maximize your productivity including a completeness checker, a utility to initially populate, or quickly change the data of all the RBD blocks. The Reliability Modeling Worksheet provides a convenient means to quickly tailor or update your model. 

The RBD Analysis Report presents your analysis, with block diagrams and supporting tables in Excel format. Armed with this information, you have an early opportunity to improve your system design.

For more complex system models or to conduct  simulations of the system reliability model, ASENT provides an interface to ARINC’s RAPTOR+ reliability modeling tool. The interface pre-populates the data for the RBD model nodes with both reliability and maintainability data. This gives RAPTOR users a significant productivity lift.