Browsing by Author "Johnson, Brian"
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Item After Brainstorming, When is the best idea selected?(2008-08) Johnson, BrianItem EVA Systems Technology Gaps and Priorities 2017(47th International Conference on Environmental Systems, 2017-07-16) Johnson, Brian; Buffington, JessePerformance of Extra-Vehicular Activities (EVA) has been and will continue to be a critical capability for human space flight. Human exploration missions beyond LEO will require EVA capability for either contingency or nominal activities to support mission objectives and reduce mission risk. EVA systems encompass a wide array of products across pressure suits, life support systems, EVA tools and unique spacecraft interface hardware (i.e. EVA Translation and EVA Worksite design…). In a fiscally limited environment with evolving transportation and habitation options, it is paramount that the EVA community’s strategic planning and architecture integration products be reviewed and vetted for traceability between the mission needs far into the future to the known technology and knowledge gaps to the current investments across EVA systems. To ascertain EVA technology and knowledge gaps many things need to be brought together, assessed and analyzed. This includes an understanding of the destination environments, various mission concept of operations, current state of the art of EVA systems, EVA operational lessons learned, and reference advanced capabilities. A combined assessment of these inputs should result in well-defined list of gaps. This list can then be prioritized depending on the mission need dates and time scale of the technology or knowledge gap closure plan. This paper will summarize the current state of EVA related technology and knowledge gaps derived from NASA’s Exploration EVA Reference Architecture and Operations Concept products. By linking these products and articulating NASA’s approach to strategic development for EVA across all credible destinations an EVA could be done in, the identification of these gaps is then used to illustrate the tactical and strategic planning for the EVA technology development portfolio. Finally, this paper illustrates the various “touch points” with other human exploration risk identification areas including human health and performance.Item Extravehicular Activity Framework for Exploration - 2019(49th International Conference on Environmental Systems, 2019-07-07) Alpert, Brian; Johnson, BrianThe Extravehicular Activity (EVA) Framework for Exploration describes NASA’s EVA System Goals in the broader context of ongoing human spaceflight efforts. The purpose of this document is to drive integration, coordination and communication of the EVA community’s exploration development plans as crafted to meet long-term EVA needs. also Inclusive in the EVA community are NASA partners in academia and industry. The 2019 EVA Framework outlines the office’s current method to answer the following questions: What product does NASA use to compare, contrast and integrate across the elements of the EVA community’s perceived gaps, risks, and unfunded work, particularly for future systems intended for use beyond Low Earth Orbit (LEO)? What product does NASA use to proactively coordinate support across the EVA community’s wide spectrum of exploration development work? Where can one go to obtain awareness of ongoing efforts, particularly during consideration of new-start activities and proposals? These questions lead to the need for a product that speaks to the distributed nature of the EVA System across human spaceflight programs, concept studies and flight vehicle architectural elements. This framework can be used and evaluated by the EVA community to assess the full spectrum of needs and answer the question of “what are we missing” or “are we doing things that just do not make sense”. In the end is the EVA community effectively pursuing the future needs of EVA? If answers to those questions reveal the need for change or re-prioritization then actions can be taken through existing project control processes as well as revision to this document and supporting project plans.