| 2.3.7-1-1 Ensure the prime-contractor flows down the appropriate mass properties control requirements to sub-contractors and/or suppliers |
Phase A |
Phase B |
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Ensure the prime-contractor clearly identifies, documents, and communicates the applicable and appropriate mass properties control and reporting requirements to subcontractors and suppliers through mass properties control plan documentation and/or subcontract requirements documents.
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NA
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Statement of Work (SOW)
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TR-2018-01203 Tailoring for AIAA-S-120A-2015 Mass Properties Control for Space Systems: Space Vehicles, Section 5.1.2.1
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| 2.3.7-1-2 Ensure that applicable requirements are imposed on and understood by subcontractors and suppliers |
Phase A |
Phase B |
Phase C |
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Ensure the subcontractor and supplier Interface Control Documents and/or product specifications specify mass properties limits. Ensure the contract documents also specify whether unit and assembly mass properties will be verified by measurement, analysis, or a combination of both. Ensure perform an independent verification and validation that the contract documents specify requirements for reporting the mass properties status of each major subcontract item and supports integration of this data into the prime contractor's mass properties status assessment and reporting cycle.
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NA
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Statement of Work (SOW); Intra-Segment ICDs
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ANSI/AIAA S-120A-2015 Mass Properties Control for Space, Systems 5.1.2.2
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| 2.3.7-1-3 Ensure the Contractor's Mass Properties Control Plan is reviewed |
Phase A |
Phase B |
Phase C |
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Ensure review and assessment of the Mass Properties Control Plan describes a viable mass properties control process that monitors and controls all critical mass properties.
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NA
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NA
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ANSI/AIAA S-120A-2015 Mass Properties Control for Space Systems, Section 5.1.3
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| 2.3.7-1-4 Ensure mass properties requirement traceability is shown for all system and subsystem requirements |
Phase A |
Phase B |
Phase C |
Phase D1 |
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Ensure review and assessment that the contractor uses an appropriate requirement tracking tool to demonstrate requirements flow-down and requirements compliance with artifacts.
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NA
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System Requirements Document; System Requirements Allocation Matrix; Intra-Segment ICDs
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ANSI/AIAA S-120A-2015 Mass Properties Control for Space Systems, Section 5.1.4
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| 2.3.7-1-5 Ensure mass properties margins evaluated for compliance to performance requirements and mass properties requirements |
Phase A |
Phase B |
Phase C |
Phase D1 |
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Ensure verification and validation of the proposed design includes basis of mass estimate, heritage data, maturity Statius, technical readiness levels and mass growth allowance. Ensure the contractor uses predicted mass and predicted inertias when evaluating margins for compliance to performance requirements and critical mass properties requirements.
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NA
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System Requirements Document; System Requirements Allocation Matrix
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ANSI/AIAA S-120A-2015 Mass Properties Control for Space Systems, Section 5.1.6
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| 2.3.7-1-6 Ensure the contractor tracks mass maturity and applies appropriate mass growth allowances based on design maturity |
Phase A |
Phase B |
Phase C |
Phase D1 |
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Ensure the contractor utilizes the bottoms-up method to track mass maturities and mass properties at the lowest component level, then applies mass growth allowance to define the predicted mass properties.
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NA
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NA
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ANSI/AIAA S-120A-2015 Mass Properties Control for Space Systems, Section 5.1.7
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| 2.3.7-1-7 Ensure all potential design changes are maintained, monitored, and reported |
Phase A |
Phase B |
Phase C |
Phase D1 |
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Ensure that the contractor reports all potential and pending changes throughout the program phase.
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NA
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NA
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ANSI/AIAA S-120A-2015 Mass Properties Control for Space Systems, Section 5.1.8
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| 2.3.7-1-8 Ensure the contractor monitors mass risk |
Phase A |
Phase B |
Phase C |
Phase D1 |
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Ensure the contractor regularly evaluates and reports the systems, subsystems, payload, bus, and space vehicle mass risks using the recommended Technical Performance Measurement table.
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NA
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NA
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ANSI/AIAA S-120A-2015 Mass Properties Control for Space Systems, Section 5.1.10
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| 2.3.7-1-9 Ensure the status of all critical mass properties and the predicted performance are tracked |
Phase A |
Phase B |
Phase C |
Phase D1 |
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Ensure the contractor evaluates and reports all the critical mass, Centers of Mass, Moments of Inertia, and Products of Inertia data and Technical Performance Measurements on an approved schedule.
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NA
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NA
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ANSI/AIAA S-120A-2015 Mass Properties Control for Space Systems, Section 5.1.11
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| 2.3.7-1-10 Ensure Mass Properties Control Board is established |
Phase A |
Phase B |
Phase C |
Phase D1 |
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Ensure the contractor establishes a Mass Properties Control Board consisting of a Board Chair, Co-Chair, Program Chief engineer and/or Chief Engineer representative, mechanical and electrical system leads, mass properties engineer, customer and/or customer representative.
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NA
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NA
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ANSI/AIAA S-120A-2015 Mass Properties Control for Space Systems, Section 5.1.12
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