# Presentation: 551484

##  RMS Modeling and Analysis in Support of the 2GRLV Independent Systems Analysis Activity 

- Fayssal M. Safie
- MSFC/UP10

## Agenda

- The Integrated Reliability, Maintainability, and Supportability (RMS) Process
- Overview of RMS Functions, Tasks, Models, & Tools
- Definition of RMS Tasks
- Candidate RMS Tools for Reliability Modeling and Analysis
- Candidate RMS Tools for Maintainability Modeling and Analysis
- Candidate RMS Tools for Supportability Modeling and Analysis
- Additional Candidate Tools for RMS Trades/Special Studies
- RMS Systems Analysis Integrated Tool
- SRR Implementation - ISAT
- Post-SRR Implementation

- UP10/Dr. Fayssal Safie

## The Integrated Reliability, Maintainability, and Supportability (RMS) Process

**Reliability  Modeling & Analysis**

**Failure Modes & Effects Analysis**

**RCM Analysis **

**Maintenance Task Analysis**

**Supportability Analysis**

**Systems Engineering**

_**Level 1**_
_**Requirements**_

**Loss of Crew**

**Launch Availability**

**Cost**

**Maintainability Modeling & Analysis **

**RMS-Related Analysis**

**Operational **
**Readiness**

**Weather**

**Start-up **
**Reliability**

**Maintenance Packaging Analysis**

**Cost Analysis**

**Loss of Mission**

- RMS Analyses

- Related Analyses

- Requirements and Factors

***Note:  Full implementation of process post SRR **

- UP10/Dr. Fayssal Safie

## Overview of RMS Functions, Tasks, Models, & Tools

**RMS Engineering**

**Systems Analysis**
**Support**

**Trades/**
**Special Studies**

**Insight ***

- _ISAT Independent Assessment_
-  - Reliability/Safety Analysis
-      - FIRST
-  - Launch Availability Analysis
-      - RMAT, NROC, & FIRST
- _VIPA Independent Assessment_
- RMS Modeling & Analysis
-      - RMS SA Integrated Tool
- -RMS-Operations Modeling &
-   Analysis
-      - Integrated RMS-Operations
-        Tool

- _Data Evaluation_
- Same Models as Systems
-  Analysis Support
- _Process/Plan Evaluation_
- Same Models as Systems
-  Analysis Support
- _TIMs_
- Same Models as Systems
-  Analysis Support
- Tools under Systems Analysis
- Support and Trades/Special
- Studies will be used as required.

- _Reliability Trades/Special Studies_
- -Failure/Risk Analysis
-     - ReliaSoft BlockSim/TBD
- -Probabilistic Design Analysis
-     - ProFES/TBD
- -Design of Experiments
-      -Statgraphics/TBD
- _Maintainability Trades/Special Studies_
- -Work Envelope Accessibility
-      - TBD
- _Supportability Trades/Special Studies_
- -Level of Repair Analysis
-     -NRLA/TBD
- -Sparing Analysis
-      -Excel/TBD

- UP10/Dr. Fayssal Safie

## Definition of RMS Tasks

**Failure Logic Modeling**: Combines the FMEA and related analysis in one step with the development of the failure logic (e.g., fault tree, event tree, etc.).
**Reliability Modeling**: The quantification of the Failure Logic Model through data fitting and other techniques.
**Reliability Analysis**: Execution of the quantified Failure Logic Model (Monte Carlo simulation) to estimate reliability figures of merit.
**Reliability-Centered Maintenance Analysis**: Transforming failure and reliability data into a set of scheduled maintenance actions/
**Maintenance Downtime Modeling**: Developing a time-sequenced ordering of maintenance and support actions.
**Maintainability Modeling**: Developing models to estimate expected durations of the maintenance and support actions in the Maintenance Downtime Model.
**Downtime Analysis**: Executing the Maintenance Downtime Model to determine the availability (turnaround time) for a Launch Vehicle Architecture.
**Launch Availability Analysis**:  Combing the output of Downtime Analysis, Start-up Reliability, and Weather Robustness of a Launch Vehicle Architecture to estimate the architecture’s Launch Availability.
**Maintenance Task Analysis**: Decomposing maintenance actions in the Maintenance Downtime Model to the level of fidelity required.
**Maintenance Packaging Analysis**: Ordering the maintenance and support actions in the Maintenance Downtime Model to best achieve launch vehicle availability within cost constraints.
**Supportability Modeling**: Developing support resource estimating relationships for the maintenance and support actions in the Maintenance Downtime Model.
**Supportability Analysis**: Executing the Maintenance Downtime Model to estimate the maintenance support resource requirements of a Launch Vehicle architecture.
**Trades/Special Studies**: RMS modeling and analysis necessary per trade/study

- UP10/Dr. Fayssal Safie

## Candidate RMS Tools forReliability Modeling and Analysis

**Failure Logic Modeling**:
- Computer-Aided Fault Tree Analysis (CAFTA)
- SAPHIRE
- Matlab/Simulink
- FEAS-M
**Reliability Modeling**:
- Weibull + +
- SuperSMITH (tm) Plus
- CRYSTAL BALL® 2000 PREMIUM
- ExpertFit ® - Professional
**Reliability Analysis**: Execution of the software selected for Failure Event Sequence Modeling

- UP10/Dr. Fayssal Safie

## Candidate RMS Tools for Maintainability Modeling and Analysis

**Reliability-Centered Maintenance Analysis**:
- Integrated Reliability-Centered Maintenance System (IRCMS)
- MPC-3
- Excel
- RCM Cost 3.0 - Reliability Centered Maintenance
- _MSG-_3 - Reliability Centered Maintenance Aerospace
- Socrates
- Maintenance Engineering Analyst (MEAnalyst)
**Maintenance Downtime Modeling**:
- Extend+Industry+BPR
- Arena
- Matlab/Simulink
- RAMP (Reliability Availability and Maintainability in Process Systems) Simulation Program
**Maintainability Modeling**: Same tools used for Reliability Modeling
**Downtime Analysis**: Execution of the software selected for Maintenance Downtime Modeling.
**Launch Availability Analysis**: Integration of the output from the Maintenance Downtime Model, the start-up reliability output of the Reliability Analysis, and the output from the Weather Response model.

- UP10/Dr. Fayssal Safie

## Additional Candidate RMS Tools forTrades/Special Studies

**Probabilistic Design Analysis**:
- ProFES
**Reliability Analysis**:
- ReliaSoft Blocksim
- MilStress for Windows
- RG ReliaSoft
**Degradation Analysis:**
- ALTA Version 6
**Maintainability Analysis:**
- MDEM
**Statistical Analysis/Design of Experiments**:
- E-Chip
- JMP
- Statgraphics Plus
- MINITAB-13

- UP10/Dr. Fayssal Safie

## RMS Systems Analysis Integrated Tool

- _Reliability Model_
- _Candidate Tools:_
- CAFTA
- SAPPHIRE
- Matlab/Simulink

- _Maintainability Model_
- _Candidate Tools:_
- Arena
- Extend
- Matlab/Simulink

- _Supportability Model_
- _Candidate Tools:_
- Arena
- Extend
- Matlab/Simulink

- RMS Systems Analysis
- Integrated Tool

- UP10/Dr. Fayssal Safie

## SRR Implementation - ISAT

**Reliability Modeling and Analysis**: Performed by SAIC using Flight Integrated Reliability and Safety Tool (FIRST) developed by SAIC for the 2GRLV ISAT activity.
**Maintainability Modeling and Analysis**: Performed within the Operations suite of tools (RMAT, NROC, ...)

- UP10/Dr. Fayssal Safie

## Post-SRR Implementation

- Implement the RMS tasks defined on Chart 5, Definition of RMS Tasks.
- Further evaluate candidate software for the identified tasks.
- Select tools from the candidate software according to the following selection guidelines:
- Maximize commercial off-the-shelf selections
- Minimize development of special tools
- Commit human resources to tool integration and the RMS/Operations interface
- Develop an integrated RMS Systems Analysis Tool through contract.
- Integrate the RMS Systems Analysis Tool through defined inputs/outputs with the Vehicle Integrated System Model and Simulation (VISMS) of the Vehicle Integrated Performance Analysis (VIPA)
- Fully define and commit human resource needs to RMS modeling and analysis tasks:
- TBD reliability analysts
- TBD maintainability analysts
- TBD supportability analysts
- Develop integrated RMS models and perform RMS systems analysis as required.

- UP10/Dr. Fayssal Safie