Systems Engineering Glossary

Term Main definition

The inability of an entity to perform as intended.


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.


Hardware combined with read-only software that is not easily modified.

Float (Schedule)

The length of time an activity can be delayed without becoming a critical activity on the 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.

Mission Statement

Strategy Bridge helps teams bridge the gap between plans and operating results through delivery of systems engineering and project management training, consulting, mentoring and facilitated workshops. Our success is gauged by our ability to foster positive, sustained, organizational change.

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