International Space Station Environmental Control and Life Support System Design Overview Update 972333

The International Space Station (ISS) program consists of three distinct phases. Phase 1 consists of the joint Shuttle-Mir missions. Phase 2 establishes the ISS initial research capability with a three person crew permanent presence. Phase 3 completes the assembly, establishing six person crew permanent presence with multiple International Partner (IP) research facilities. Phase 1 is nearing completion, while Phase 2 is in the subsystem delivery and element integration stage. This paper provides a status of the U.S. Environmental Control and Life Support (ECLS) system for Phases 2 and 3 of the ISS program, focusing on updates and changes in the past year.


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