SAE GEB1-2000 pdf download Diminishing Manufacturing Sources and Material Shortages (DMSMS) Management Practices
3.2 Electronic System Life Cycle Model For the purpose of this guideline, the following acquisition phases will be used to describe the life cycle of an electronic system 5 .
• Phase 0 – Concept Exploration: Phase 0 typically consists of competitive, parallel short-term concept studies. The focus of these efforts is to define and evaluate the feasibility of alternative concepts and to provide a basis for assessing the relative merits (i.e. advantages and disadvantages, degree of risk) of these concepts at the next milestone decision point. Phase 0 affords the greatest opportunity to effect reductions in total ownership costs (TOC). Funding and logistics profiles are still fluid, and the widest range of Non-Development Item (NDI) and Commercial Off The Shelf (COTS) choices available.
• Phase I – Program Definition and Risk Reduction: During this phase, the program becomes defined as one or more concepts, design approaches, and/or parallel technologies are pursued as warranted. Assessments of the advantages and disadvantages of alternative concepts are refined. Prototyping, demonstrations, and early operational assessments are considered and included as necessary to reduce risk so that technology, manufacturing, and support risks are well in hand before the next decision point. Cost drivers, life-cycle cost estimates, cost-performance trades, interoperability, and acquisition strategy alternatives are considered to include evolutionary and incremental software development. Significant opportunities exist in the conduct of Trade Studies, make-or-buy decisions, simulation tool usage, design for Built-in- Test (BIT), Pre-Planned Product Improvement (P3I) planning and logistics support alternatives.
• Phase II – Engineering and Manufacturing Development / Low Rate Initial Production (LRIP): The primary objectives of this phase are to: translate the most promising design approach into a stable, interoperable, producible, supportable, and cost-effective design; validate the manufacturing or production process; and, demonstrate system capabilities through testing. Continued trade studies, Value Engineering Change Proposals (VECP), design analysis, spares & provisioning strategy development, teaming opportunities and contractor-supplier alliances offer opportunities to avoid DMSMS cases and provide potential technology insertion benefits to the program. Low Rate Initial Production (LRIP) occurs while the Engineering and Manufacturing Development phase is still continuing as test results and design fixes or upgrades are incorporated. The objective of LRIP is to produce the minimum quantity necessary to: provide production configured or representative articles for operational tests, establish an initial production base for the system; and permit an orderly increase in the production rate for the system, sufficient to lead to full-rate production upon successful completion of operational testing. LRIP provides key opportunity to update and validate available knowledge to reflect actual schedules, parts & materials, costs, technology maturities and other factors.
• Phase III – Production, Fielding/Deployment, and Operational Support: The objectives of this phase are to achieve an operational capability that satisfies mission needs. Deficiencies encountered in Developmental Test and Evaluation (DT&E) and Initial Operational Test and Evaluation (IOT&E) are resolved and fixes verified in Follow-on Operational Test and Evaluation (FOT&E). During fielding/deployment and throughout operational support, the potential for modifications to the fielded/deployed system continues. The objectives of Operational Support are the execution of a support program that meets the threshold values of all support performance requirements and sustainment of them in the