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Guidelines for Verification Strategies to Minimize RISK Based on Mission Environment, -Application and -Lifetime (MEAL)There is a trend of compromising verification testing to address the cost and schedule constraints, which poses a high-risk posture for programs/projects. Current and emerging aerospace scientific and/or human exploration programs continue to pose new technological challenges. These technological challenges combined with finite budgets and truncated schedules are forcing designers, scientists, engineers, and managers to push technologies to their physical limits. In addition, budget and schedule pressures challenge how those technologies/missions are verified. A clear understanding of the different verification processes is needed to ensure the proper verification of the technology within the mission (i.e., capabilities, advantages, and limitations). The goal of verification is to prove through test, analysis, inspection, and/or demonstration that a product provides its required function while meeting the performance requirements. It is important that verification yield understanding of representative performance under worst-case conditions so that margins to failure can be evaluated for proposed applications. The capabilities, advantages, and limitations of the testing and inspection performed at each level are different, and the risk incurred by omitting a verification step depends on the level of integration as well as Mission, Environment, Application and Lifetime (MEAL). This paper focuses on verification processes. The goal of the verification process is to ensure the given avionics technology could be safely implemented on the given MEAL consistent with the program/project risk posture.
Document ID
Document Type
Technical Memorandum (TM)
Gonzalez, Oscar
(National Inst. of Aerospace Hampton, VA, United States)
Chen, Yuan
(NASA Langley Research Center Hampton, VA, United States)
Ladbury, Raymond L.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Morgan, Dwayne R.
(NASA Wallops Flight Facility Wallops Island, VA, United States)
Green, Christopher M.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Yuchnovicz, Daniel E.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
November 6, 2018
Publication Date
June 1, 2018
Subject Category
Quality Assurance And Reliability
Spacecraft Design, Testing And Performance
Report/Patent Number
Distribution Limits
Work of the US Gov. Public Use Permitted.
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