Sea Launch User's Guide

5.9 Contamination
Overview
Contamination of the spacecraft by the launch vehicle is addressed in all
phases of the mission. These include:
• Launch vehicle hardware that comes in contact with the spacecraft
environment has been designed, manufactured, and tested to
meet strict contamination control guidelines regarding materials
outgassing, cleanability, particle generation, corrosion, and wear.
• Integration is performed in controlled (class 100,000) clean room
environments, including spacecraft standalone testing, payload
accommodation preparations, and spacecraft encapsulation.
• After encapsulation, the spacecraft environment is ensured by the
maintenance of a continuous clean air purge to the payload fairing.
• The design of the payload structure isolates the spacecraft from
most on-orbit outgassing sources, such as the flight avionics
hardware and the Block DM-SL.
• Launch Vehicle plume impingement on the spacecraft is minimized
by physical barriers and flight design restrictions.
Contamination
control documents
Contamination control practices at the payload accommodation factory are
documented in the Contamination Control Plan and Specification for Sea
Launch Operations at Seattle, Boeing document D688-10150-1.
Processing of the payload accommodation is conducted in accordance
with the environmental controls and operational requirements documented
in the Contamination Control Plan for Sea Launch Home Port Operations
Through Launch Operations, Boeing document D688-10151-1.
The Generic Payload Contamination Analysis, Boeing document
D688-10131-1, is a comprehensive analysis of contamination deposition
on the spacecraft from all ground processing and launch vehicle sources.
REV B D688-10009-1 5-25