ESA Document - Emits - ESA

s
HMM
Assessment Study
Report: CDF-20(A)
February 2004
page 145 of 422
Finally a one-module fail-safe with hard shell and a mixture of Skylab- and ISS-orientation was
chosen.
3.3.1.3 Other design drivers
The following elements also have an impact on the design:
• 1/5 of the volume has to be dedicated to ducts and pipes
• Easy access to all ducts and pipes for maintenance is required, a well designed
system and structure supports easy maintenance
• If reasons all systems (LSS, AOCS, etc.) should be modular, e.g. made out of plugand-play
parts, so that in case a part fails in one place the astronaut can put it into
another place
• There shall be avoidance provisions for the following:
• Toxicity
• Fire/explosion
• Contamination
• Other biological hazards
• Enough fire detectors and isolation and recovery systems should be provided to
enhance the safety of the crew
3.3.1.4 Interior configuration
The development of the baseline design for the THM included an extensive research and analysis
of built and operated space stations. Before the final baseline design four main steps including
nine different configuration options were developed. These were followed by a detailed design
for different interior layouts for the three main zones: the private, the personal and the social
zone.
Figure 3-21 shows the selected showing the selected baseline design for the THM: