Systems Engineering Glossary
Term | Definition |
---|---|
Failure | The inability of an entity to perform as intended. |
Family-of-Systems | A group of systems that provide similar capabilities that use different approaches to achieve the same goal. A family of systems does not acquire qualitatively new properties as a result of any interactions among the constituent systems. |
Firmware | Hardware combined with read-only software that is not easily modified. |
Float (Schedule) | |
Full Operational Capability (FOC) | The state attained when a system achieves full intended operational capability for its specified requirements and is operational in its environment. |
Functional Analysis | The process of identifying all of the sub-functions of a system function necessary to perform its goals and objectives. Relationships and interfaces are captured in the functional architecture. |
Functional Configuration Audit (FCA) | The examination of a configured product to verify its performance test results as specified in its functional baseline documentation approved at the PDR and CDR. |
Functional Decomposition | An examination of a function to identify (a) sub-functions necessary to accomplish the function, (b) functional relationships, and (c) interfaces. |
Functional Flow Block Diagram | A graphical depiction of a system’s functions shown as blocks and their time sequence. |