Reliability Growth of Mobile Gun System During Production Verification Test
GENERAL DYNAMICS CORP STERLING HEIGHTS MI LAND SYSTEMS DIV
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Product verification testing PVT plays an important role in the verification and demonstration of key performance parameters and system reliability of autonomous and manned systems. Considerable effort was put into improving reliability of the Stryker Mobile Gun System MGS before and during PVT. During PVT for the Stryker MGS, an unprecedented reliability growth rate of 0.38 was achieved. This article describes implementation of systems engineering principles employed during the MGS program, as well as system abort data analysis conducted using reliability growth analysis and the Design Actions Report and Tracking system. During reliability growth testing, it is very important to have a proper understanding of the test data that trigger proper engineering analysis and consequently fuel reliability growth of the system during its developmental testing. In order to substantially improve reliability of the system during product qualification testing or PVT, it is imperative to have well defined failure definition scoring criteria, established engineering root cause analysis processes, fast implementation of verified design fixes, and Design Actions Reports and Tracking that address observed failure modes. This article discusses the reliability methodology utilized during PVT of MGS as well as some of the systems engineering principles employed to actively improve the design of MGS. Such an approach completes the Test-Find-Fix-Test cycle, further improves MGS reliability, and meets the requirements for the mission equipment package. Substantial efforts were made not only to capture positive and negative outcomes of this program, but also to mature the MGS program into a design-for-reliability methodology that can be utilized in future programs with even greater success.
- Combat Vehicles