Using Optimization to Improve NASA Extravehicular Activity Planning
Felker, Paul W.
MetadataShow full item record
Extravehicular Activity (EVA) is a specialized function performed during spaceflights in which two or more astronauts don spacesuits to perform tasks on the exterior of their spacecraft. An extensive and iterative planning process is required to prepare for each highly choreographed EVA operation. The current planning process relies heavily upon time-consuming heuristic approaches by subject matter experts to essentially "hand-build" each EVA plan. This research develops the EVA Planning Model (EPM), a linear, mixed-integer program intended as a proof-of- concept demonstration for employing formal mathematical optimization techniques to EVA planning. The EPM is thoroughly tested to verify that it functions as intended and is evaluated by expert EVA planners using actual task information. We find that the EPM proves the concept that formal mathematical optimization can be used to aid in subject matter experts in EVA development and planning. It is particularly useful in allowing the evaluation of alternative planning inputs and thorough assessment of EVA plan impacts resulting from external changes.
Showing items related by title, author, creator and subject.
Russell, James A.; Wirtz, Jim (Monterey, California: Naval Postgraduate SchoolMonterey, California. Naval Postgraduate School, 2019-12); NPS-19-N001-AThis project is a continuation of ongoing support by NPS to the work of N50 to further refining and improving the Navy's strategy development and implementation processes. This will be the fourth year of support to the ...
Phase zero operations for contingency and expeditionary contracting-keys to fully integrating contracting into operational planning and execution Yoder, E. Cory (Monterey, California. Naval Postgraduate School, 2010-08-02); NPS-CM-10-160The Naval Postgraduate School (NPS) has published several works that highlight significant progress in the planning and execution of Operational Contract Support. For example, The Yoder Three-tier Model for Optimal Planning ...
Doerr, Kenneth H.; Kang, Keebom (Monterey, California, Naval Postgraduate School, 2014); NPS-LM-12-212This case is intended to illustrate key trade-offs in planning the acquisition of a major weapon system. In particular, the impact of logistics and maintenance decisions on life-cycle costs and readiness are examined. The ...