ESA Document - Emits - ESA

s
HMM
Assessment Study
Report: CDF-20(A)
February 2004
page 98 of 422
• EVA-supported completion of MEV structural I/F
• MEV Check-out, Commissioning Phase & Crew orientation commence at
MEV delivery
Once the MEV is added to the composite, the 90-day commissioning phase begins. If an in-orbit
crew is required, dedicated commissioning crew shall be present for the first 60 days.
Service Platform 5
2.8.3.9 Launches 26-27- Crew
Figure 2-56: Launch of MEV
EVA
Airlock 1
Habitation Module
• Launch 26 & 27 - Mars Crew delivery 30 days before departure
– assumption, two launches of three crewmembers by Soyuz
– alternative, single launch by shuttle
2.8.3.10 Launch 28- Cryogenic stage refueling (if required)
• Refueling of Cryogenic stages performed during commissioning phase
Note that the above assembly approach satisfies the constraint to minimise the Cryogenic fuel
boil-off. However the assembly of the habitation modules at the beginning of the composite
assembly sequence maximizes the life requirement of the equipment.
Table 2-34 show a summary of the sequence defined above:
MEV