CH2 Cards -Part 1 dos Flashcards
The overall purpose of Systems Engineering (SE) is to enable successful realization of the system while optimizing among competing stakeholder ___________.
objectives
the set of stages for a system is termed a system ____ _____
life cycle
One way in which realization is managed is by breaking the overall effort into transformational steps, or _____s, then checking for satisfactory fulfillment of system characteristics at the end of each _____
stage
Stages often are not sequential and can occur ________ or as needed.
concurrently
Stages can _______ and stages can be entered at any point in the life cycle.
overlap
____________ systems (see Section 1.3.3) also have their own life cycles, which must be integrated
with that of the Sol.
enabling
Requirements must be flowed down to the __________ to be integrated and the decision gates should support progressive integration into the final Sol in a timely manner to help ensure that the ____________s can be progressively integrated.
elements
The system lifecycle 6 stages are:
concept, development, production, utilization, support, and retirement
The ______ stage can include exploratory research and begins with recognition of a need for a new or modified mission or business capability. Unless the solution is immediately at hand, which is the first thing to analyze, new potential solutions will need to be sought. Exploration needs to address both short- and long-range factors, including technical, economic, market, and resource considerations, including human resources.Throughout the concept stage, it is critical to perform ongoing and robust assessment and management of risks. Getting feedback from current and potential stakeholders (e.g., customers, users, suppliers) significantly aids in developing solution concepts. The maturity and availability of enabling systems over the system life cycle must also be considered.
It is difficult to project the possibilities for as-yet untried solutions, though these may provide the greatest long-term benefit. At the same time,
concept
In the ______stage it is key that the problem space is clearly defined (existing issue or new opportunity), the solution space is characterized, business or mission requirements, and stakeholder needs and requirements are identified.
concept
In the ______ stage, an estimate of the cost, schedule, and performance across the life cycle can be derived.
concept
Typical outputs from the ______ stage include preliminary concept artifacts (e.g., Operational Concept (OpsCon), Support Concept), SE methodology approach considerations, feasibility assessments (e.g., models, simulations, prototypes), preliminary architecture solutions, and stakeholder requirements.
concept
The ________ stage is a particularly critical part of the system life cycle because the decisions made during the stage will shape, with increasing difficulty to change, the possibilities for all the remaining stages.
concept
In the ____________ stage, it is easy to fall into the trap of projecting incremental changes to what has worked in the past and is used now, which can significantly limit the future possibilities.
concept
The ___________ stage defines an Sol that meets its agreed-to stakeholder needs and requirements and can be produced, utilized, supported, and retired. System analyses, including trade-off analysis, as well as further modeling, simulation, and prototyping are performed to achieve system balance and to optimize the design for key parameters.
development
The main aspect of the _________ stage is to mature the system concepts and stakeholder needs and requirements into an engineering baseline that can be produced, utilized, and supported over the desired span of its useful life, and finally retired in a responsible manner.
development
The engineering baseline is set during the __________ stage, and includes system requirements, architecture, design, documentation, and plans for subsequent stages.
development
Outputs of the ________ stage, can include an Sol prototype, enabling system requirements (or the enabling systems themselves), plans for integration, verification, validation, transition, acquisition, logistics support, risk management, staffing and training, and detailed cost estimates and schedules for future stages.
development
The _________ stage begins with approval to translate the baselines of the development stage into
an actual system, or those parts of the Sol where approval is given (which is not uncommon for a complex system). The approval includes the enabling systems and must address all areas of the baseline.
production
In the ________ stage, the Sol becomes reality, is qualified for use, and is ready for installation and transition under the utilization stage.
production
The outputs of the _______ stage are the realized portions of the Sol (with its enabling systems) as well as the documentation that will go forward for use in the utilization, support, and retirement stages.
production
The _______ stage begins with the transition to use of a system, or the parts of a system
approved for use. This includes any enabling systems that will support use of the system being used in its intended environment to provide its intended capabilities.
utilization
Product modifications are often introduced throughout the _________ stage, which generally is much longer than the other stages. Such changes can remedy deficiencies, enhance the capabilities, or extend the life of the system.
utilization
Throughout the _______stage, it is critical to maintain documentation from prior stages, as well as to ensure that Technical Management Processes, such as Configuration Management and Risk Management, and SE support remain in place and are robustly applied.
utilization