The Extravehicular Mobility Unit: case study in requirements evolution

@article{Jordan2005TheEM,
  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)},
  year={2005},
  pages={434-438}
}
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… 

Tables from this paper

Multidisciplinary spacesuit modeling and optimization : requirement changes and recommendations for the next-generation spacesuit design
The ability for crewmembers to perform spacewalks is an essential component of human spaceflight. Spacewalks are absolutely crucial for planetary exploration because they enable astronauts to explore
Modularity in Spacesuit Design: Using Form-to-Function Mapping to Inform Design Choices
TLDR
It is argued that one means of achieving flexibility is via modular design, defined as a one-to-one mapping between form and function, which leads to a more modular and thus flexible architecture.
Study of Wireless Propagation for Body Area Networks Inside Space Suits
Future NASA plans include launching manned interplanetary missions to Mars and lunar destinations. These missions present new challenges that require rethinking of the extra-vehicular activity (EVA)
Wireless propagation measurements for astronaut body area network
TLDR
Investigating the performance of intra-space suit wireless propagation using a full-scale space suit model that is built with electrical properties similar to that of a real space suit demonstrates that the intra-suit environment is quite conducive to radio propagation, although there are substantial differences in path loss for the different frequency bands.
Preliminary considerations for wearable sensors for astronauts in exploration scenarios
TLDR
A wearable sensor platform for future exploration in space called Bio-Life, based on a network of integrated fabric sensors and advanced signal processing techniques, that gathers various parameters such as ECG, pulse oximetry, temperature, and other biomedical signals.

References

SHOWING 1-10 OF 10 REFERENCES
Preparing EMU for Space Station.
Extravehicular Activity Hardware for International Space Station
TLDR
A brief overview of the Russian ISS EVA capability is provided along with plans for interoperability between U.S. and Russian EVA.
Spacecraft Design Lifetime
A general discussion of issues that drive and limit spacecraft design lifetime is presented. The effects of varying the spacecraft lifetime requirement on different subsystems are explored, and
System Engineering Management
Foreword.Preface.1. Introduction to Systems Engineering.1.1 The Current Environment.1.2 The Need for System Engineering.1.3 Related Terms and Definitions.1.4 Systems Engineering Management.1.5
Extravehicular Mobility Unit Requirements Evolution , ” Hamilton Sundstrand , Contract No
  • Hamilton Sundstrand . Revision D , February