Systems Engineering Glossary

The ability, ease, and swiftness to restore a system to functionality after a failure or defect.

The allowances carried in budget, projected schedules, and technical performance parameters (e.g., weight, power, or memory) to account for risk.

A measure that indicates how well a system achieves intended operational capabilities in its intended environment.

Quantifiable measures of how well a system is expected to satisfy defined parameters in its operational environment.

A specific definable accomplishment at a given point in time where approval is sought to start or continue into the next phase of the program.

A representation of a real-world process, concept, or system that uses logical expressions to predict how a system might perform under different conditions.

Formal utilization of models to support all technical Systems Engineering (SE) activities throughout the life cycle phases.

A lower level entity derived from a higher level entity during the architecting process.