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Model Based Mission Assurance in a Model Based Systems Engineering (MBSE) Framework: State-of-the-Art Assessment
NTRS Full-Text: Click to View  [PDF Size: 4.5 MB]
Author and Affiliation:
Cornford, Steven L.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States);
Feather, Martin S.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
Abstract: This report explores the current state of the art of Safety and Mission Assurance (S&MA) in projects that have shifted towards Model Based Systems Engineering (MBSE). Its goal is to provide insight into how NASA's Office of Safety and Mission Assurance (OSMA) should respond to this shift. In MBSE, systems engineering information is organized and represented in models: rigorous computer-based representations, which collectively make many activities easier to perform, less error prone, and scalable. S&MA practices must shift accordingly. The "Objective Structure Hierarchies" recently developed by OSMA provide the framework for understanding this shift. Although the objectives themselves will remain constant, S&MA practices (activities, processes, tools) to achieve them are subject to change. This report presents insights derived from literature studies and interviews. The literature studies gleaned assurance implications from reports of space-related applications of MBSE. The interviews with knowledgeable S&MA and MBSE personnel discovered concerns and ideas for how assurance may adapt. Preliminary findings and observations are presented on the state of practice of S&MA with respect to MBSE, how it is already changing, and how it is likely to change further. Finally, recommendations are provided on how to foster the evolution of S&MA to best fit with MBSE.
Publication Date: Aug 29, 2016
Document ID:
20170005538
(Acquired Jun 14, 2017)
Subject Category: QUALITY ASSURANCE AND RELIABILITY
Report/Patent Number: NASA/CR-2016-219272, JPL-Publ-17-26, JPL-D-97731
Document Type: Technical Report
Contract/Grant/Task Num: NNN12AA01C; WBS 724297.30.31.11
Financial Sponsor: NASA; Washington, DC, United States
Organization Source: Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA, United States
Description: 57p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright; Distribution as joint owner in the copyright
NASA Terms: AEROSPACE ENGINEERING; SYSTEMS ENGINEERING; RELIABILITY ENGINEERING; QUALITY CONTROL; COMPUTER TECHNIQUES; SAFETY; PROCEDURES; ERRORS
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