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Attachment D: Systems Integration Tasks
Pages 30-31

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From page 30...
... information architecture · definition of other top-level requirements across a system of systems, such as redun dancy, reliability, and availability · flowdown of system of systems performance requirements to Tier 2 systems- crew transport cargo transport surface systems in-space systems ground systems robotic precursors · development of functional interface specifications for Tier 2 systems · drafting of verification and validation requirements and approaches for Tier 2 systems · refinement of program approach and phasing at the Tier 1 level · establishment, operation, and support of other critical systems integration functions, such as:
From page 31...
... Tier 1 risk analysis and risk reduction programs · maintenance and rebalancing of the efforts listed above as required Completing these tasks will require at least the following inputs: · Project Constellation vision · Project Constellation top-level requirements (system of systems) · preliminary system-of-systems architectures developed by NASA · preliminary program approach and phasing developed by NASA TIER 2: SYSTEMS At Tier 2, the systems integrator would accomplish tasks such as the following: · refinement of Tier 2 performance requirements · drafting of verification and validation requirements and plans for Tier 2 requirements · completion of architectural trade studies leading to refined architectures for each Tier 2 system (Tier 2 expansions of Tier 1 architectural products)


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