Sea Launch User's Guide

Ground processing
and transportation–first
phase
Spacecraft thermal environments are maintained and controlled during
ground processing, encapsulation, LV integration, transportation, and
prelaunch preparation phases.
During operations phases in the Home Port PPF, prior to encapsulation
by the PLF, spacecraft thermal environments will be maintained within
temperature and relative humidity ranges indicated in table 5-5.
For each phase, temperature and humidity are continuously monitored
and alarmed. During propellant loading periods, temperature can be controlled
to a maximum variance of 1.7°C (3°F).
Table 5-5. PPF Thermal Environments
Air lock
Location/phase
Spacecraft processing
and fueling cell
Encapsulation cell
Propellant storage cells
Temperature
18–24°C
(65–75°F)
20–23°C
(68–73°F)
18–24°C
(65–75°F)
18–24°C
(65–75°F)
Relative
humidity
30–60%
30–60%
30–60%
30–60%
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REV B D688-10009-1 5-17