Systems Engineering
Safety, Project Management, Systems, Glossary
Systems Engineering is an interdisciplinary engineering discipline concerned with the design, integration, and management of complex systems over their life cycles. It focuses on defining customer needs and required functionality early in the development process, documenting requirements, and proceeding with design synthesis and system validation while considering the complete problem, including operations, performance, cost, schedule, risk, supportability, and disposal.
The discipline applies structured processes such as requirements engineering, functional analysis, system architecture development, interface definition, integration, verification, validation, configuration management, and lifecycle management. These processes are applied iteratively across the system life cycle, from concept development through design, production, operation, maintenance, and retirement.
| Science |
| Applied Science |
| Engineering |
| Systems Engineering |
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In established practice, systems engineering is particularly associated with large-scale, complex, multidisciplinary systems such as aerospace systems, defense systems, transportation systems, energy systems, healthcare systems, and large information systems. Its distinguishing characteristic is the explicit management of system complexity and interfaces to ensure that the integrated system satisfies stakeholder requirements throughout its operational life.
System Engineering Branches
Integration and Verification Engineering – A systems engineering discipline concerned with integrating system components and verifying that the integrated system meets specified requirements through testing, inspection, analysis, and demonstration.
Lifecycle Management Engineering – The engineering practice of managing a system or product across its entire lifecycle—from concept, development, and production to operation, maintenance, and retirement—to ensure performance, cost, and supportability objectives are met.
Modeling and Simulation Engineering – The development and use of mathematical models and computer-based simulations to represent, analyze, predict, or evaluate the behavior and performance of systems under various conditions.
Requirements Engineering – The systematic process of eliciting, analyzing, documenting, validating, and managing stakeholder and system requirements throughout the system or product lifecycle.
Project Management Engineering – The application of engineering knowledge and project management principles to plan, organize, coordinate, and control engineering projects in order to meet technical, schedule, and cost objectives.
Risk Management Engineering – The engineering discipline focused on identifying, analyzing, mitigating, and monitoring technical risks that could affect system performance, safety, schedule, or cost.
Technical Systems Analysis Engineering – The application of analytical methods to evaluate system performance, trade-offs, costs, and effectiveness in order to support engineering decisions during system development and operation.
System Architecture and Design Engineering – The discipline concerned with defining a system’s overall structure, components, interfaces, and design solutions to satisfy requirements and achieve desired functionality and performance.
Safety Engineering – An engineering discipline that applies systematic methods to identify hazards, assess risks, and design systems and processes that prevent accidents and protect people, equipment, and the environment.
