Information flow model of human extravehicular activity operations

Preliminary Work Domain Analysis For Human Extravehicular Activity

“…Intentional, or social, constraints that exist within the EVA work domain were not considered for this study. This work builds off of previous work conducted by Miller et al, (2015) that identified and examined current EVA support operations.…”

“…Previous work has already investigated the key personnel and their respective roles and responsibilities involved in EVA operations to provide some overall context of the current EVA work domain (Miller et al, 2015). This paper builds upon that work by modeling the work domain as a set of abstraction hierarchies (Vicente, 1999).…”

“…Finally, the EVA work domain includes Mission Control, located at NASA Johnson Spaceflight Center, in Houston, Texas. Within Mission Control, a subset of personnel are dedicated to EVA support (Miller et al, 2015). The work environment spans all three boundary objects and influences the capability of work performed by each boundary object within the work system.…”

Addressing the envisioned world problem: a case study in human spaceflight operations

“…When considering what aspects to focus on for our envisioning process, we identified two functions as highest priority based on the evidence provided by our model development and observations made in the existing domain: timeline and life support system management. First, the domain is organizationally structured to specifically promote these two functions, as shown in the information flow model (Miller et al 2015a). Second, when considering other EVA generalized functions, SMEs simultaneously have to consider timeline and life support system implications.…”

Using Science-Driven Analog Research to Investigate Extravehicular Activity Science Operations Concepts and Capabilities for Human Planetary Exploration

“…Communication latencies and bandwidth limitations between Mars astronauts and Earth-based mission support add additional complications for EVA planning and execution. EVA operations to date have relied on near real-time communication between space and ground and have incorporated parallel mission control teams dedicated to timeline and life support system management, crew health and physiology, and resource utilization (Caldwell, 2000; Miller et al , 2015, 2017). However, one-way light time (OWLT) communication delays between Earth and Mars range from 4 to 22 min depending on planetary alignment.…”