1. Helicopter System Reliability Analysis Statistical Methods for Reliability Engineering Mark Andersen

2. System Description and Objective Failure data collected for 3 helicopter components, totaling 40 data points Data accounts for 37% of system failures so we can make a simplified model of the system Perform Probabilistic analysis on failure data to determine an appropriate reliability model of the helicopter system

3. Methodologies MINITAB Analysis: evaluate data to identify distribution and obtain parameter values  compute descriptive statistics, construct histogram, find good-fitting distributions, select best fitting and determine distribution parameters MAPLE Analysis  determine analytical expressions for the failure probability distribution, survival probability function, hazard function, MTTF and MRL of the system Raptor Simulation  model system and run simulations to compare with results of reliability equations determined with MAPLE

4. Results and Discussion

5. Shape=2.0682 Scale=521.09 Shape=1.3052 Scale=493.61 Shape=1.3169 Scale=1207.28 Shape and Scale parameters determined from MINITAB analysis are used for MAPLE and Raptor analysis

6. Conclusion: Helicopter System Reliability Model Helicopter system can be simplified and modeled as 3 components in a series system with Weibull distributions