Planning Road to ISS Extravehicular Activities

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50th International Conference on Environmental Systems

Planning for extravehicular activities (EVA) on the International Space Station (ISS) involves a large coordination effort from the crew, flight control team, various program stakeholders, and international partners. Based on the type of EVA, the activities, constraints, and planning phases also change. This paper will provide an overview of the EVA planning process from the lenses of the operations mission planning flight control position. This position is known as OpsPlan in the ISS mission control room, which has a team of various backroom positions that support the long-range planning, real-time planning, and execution of all crew and ground activities required for an ISS expedition. An EVA can be one of the most dynamic events that occurs during the time period of a said expedition. This paper will provide insight into the timeline and activities that lead to EVA, referenced as the Road to EVA, which are performed in preparation of the spacewalk, as well as post EVA activities. Lessons learned during this planning process will be shared, along with types and series of EVAs, and planning constraints that are generic to EVAs using examples from past EVAs.

Jackelynne Silva-Martinez, NASA
Mark Hepokoski, ThermoAnalytics, Inc.
ICES403: Extravehicular Activity: Operations
The 50th International Conference on Environmental Systems was held virtually on 12 July 2021 through 14 July 2021.
Extravehicular Activity, Planning, Road to EVA, Activities and Constraints