1964-01-01

A Practical Method of Reliability Demonstration 640574

Present government specifications, exhibits, and directives state that quantitative reliability requirements must be established in procurement specifications, work statements, and especially in incentive contracts. Without a practical means of demonstrating reliability in the developmental program, this requirement is of doubtful value.
Our current ballistic missile contracts state definite reliability numbers that must be demonstrated by a specific calender time usually associated with operational site activations. The General Electric Re-Entry Systems Department has developed a potent method for measuring and demonstrating equipment reliability using a proven analytical model. The analytical model provides the necessary means for simulating the entire operational and environmental profile. Detailed data from all levels of hardware test are fed into a computer through the mechanized data system. The output from the computer shows the probability of equipment survival under any desired combination of conditions. Equipment Reliability Status Reports generated in this manner have been used to successfully demonstrate contractual reliability numerical requirements on our major Re-entry Vehicle Systems.
This paper will describe the reliability demonstration plans and their successful implementation on typical re-entry vehicles for ballistic and space systems.

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