Technical Report: Tradespace and Affordability – Phase 3

Report Number: Technical Report SERC-2014-TR-039-3

Report Name: -ilities Tradespace and Affordability Project – Phase 3

Publication Date: December 31, 2014


Executive Summary

One of the key elements of the SERC’s research strategy is transforming the practice of systems engineering and associated management practices – “SE and Management Transformation (SEMT).” The Grand Challenge goal for SEMT is to transform the DoD community’s current systems engineering and management methods, processes, and tools (MPTs) and practices away from sequential, single stovepipe system, hardware-first, document-driven, pointsolution, acquisition-oriented approaches; and toward concurrent, portfolio and enterpriseoriented, hardware-software-human engineered, model-driven, set-based, full life cycle approaches. These will enable much more rapid, concurrent, flexible, scalable definition and analysis of the increasingly complex, dynamic, multi-stakeholder, cyber-physical-human DoD systems of the future. Four elements of the research strategy for SE Transformation are the following:

1. Make Smart Trades Quickly: Develop MPTs to enable stakeholders to be able to understand and visualize the tradespace and make smart decisions quickly that take into account how the many characteristics and functions of systems impact each other

2. Rapidly Conceive of Systems: Develop MPTs that allow multi-discipline stakeholders to quickly develop alternative system concepts and evaluate them for their effectiveness and practicality

3. Balance Agility, Assurance, and Affordability: Develop SE MPTs that work with high assurance in the face of high uncertainty and rapid change in mission, requirements, technology, and other factors to allow systems to be rapidly and cost-effectively acquired and responsive to both anticipated and unanticipated changes in the field

4. Align with Engineered Resilient Systems (ERS): Align research to leverage DoD’s ERS strategic research initiative and contribute to it; e.g., ERS efforts to define new approaches to tradespace analysis. “Systems” covers the full range of DoD systems of interest from components such as sensors and effectors to full systems that are part of net-centric systems of systems and enterprises.

“Effectiveness” covers the full range of needed system quality attributes or ilities, such as reliability, availability, maintainability, safety, security, performance, usability, scalability, interoperability, speed, versatility, flexibility, and adaptability, along with composite attributes such as resilience, sustainability, and suitability or mission effectiveness. “Cost” covers the full range of needed resources, including present and future dollars, calendar time, critical skills, and critical material resources. The primary focus of RT-113, ilities Tradespace and Affordability Project (iTAP) is on strategy 3, although its capabilities also support strategies 1, 2, and 4. It particularly focuses on the tradespace among a system’s Ilities, also called non-functional requirements or system quality attributes. The ilities differ from functional requirements in that they are systemwide.


Tradespace and Affordability