The Extravehicular Mobility Unit: case study in requirements evolution

  title={The Extravehicular Mobility Unit: case study in requirements evolution},
  author={Nicole C. Jordan and Joseph Homer Saleh and Dava J. Newman},
  journal={13th IEEE International Conference on Requirements Engineering (RE'05)},
Requirements are rarely static, and are ever more likely to evolve as the development time of a system stretches out and its service life increases. In this paper, we discuss the evolution of requirements for the U.S. spacesuit, the Extravehicular Mobility Unit (EMU), as a case study in the need for flexibility in system design. We explore one fundamental environmental change, using the Shuttle EMU aboard the International Space Station (ISS), and the resulting EMU requirement and design… 

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