ESA Document - Emits - ESA

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Figure 4-15: Plan of lower level, upper level and mid level, respectively, from left to right
HMM
Assessment Study
Report: CDF-20(A)
February 2004
page 262 of 422
Figure 4-15 shows the different levels with their functional layout. On the bottom left is the
lowest level showing how the workstation, the sample exchange box, the toolboxes and the EVA
suits docked to the SHM are integrated. In the middle right is the social level indicating the
relation of the window and the table, the galley and the circulation, the hygiene facilities and the
stairs coming up from the EVA deck.
This design approach was finally chosen because the heaviest part is at the bottom of the habitat
and the spatial design has the most advantages and different layers of perception and habitability
which makes the habitat user friendly. Also through the whole process of different options this
one developed integrating all the advantages and important factors, which have been investigated
earlier.
4.3.1.4 General safety issues
The following general safety issues have been taken into consideration:
• 20% of the volume has to be dedicated to ducts and pipes – this volume might be added
with easy access to all ducts and pipes for maintenance
• Enough fire detectors and isolation and recovery systems should be provided to enhance
the safety of the crew
• The LSS of the MAV should function independently from the SHM there must be two
air-tight compartments:
1. MAV
2. SHM