Distribution-Fit Tools
To use historical time-based life (uptime) data or repair (downtime) data to make a
forecast (e.g., probability of no failure during the first 1000 hours), the data must be
converted to a probability distribution. To make a custom probability distribution, the
data must first estimate the distribution’s parameters that are unique for each data set.
To do this, the “distribution-fit tools” described below are available to KSC personnel.
To use these tools or to have your data modeled for you, contact Tim Adams/NE-TA.
1. Reliability & Maintenance Analyst
- a. Unlimited number of users
- b. Downloaded to your NASA workstation with unique key
- c. For a description of the tool, click here
2. Windchill Weibull
- a. Limited number of users
- b. Part of the PTC Windchill Risk and Reliability (WRR) tool suite
- c. For a description of the tool, click here and go to Part 12
3. @RISK
- a. One seat for remote user
- b. For a description of the tool, click here