4.4.6 - Thermal Control Subsystem (TCS)

4.4.6-5 Level 2 Tasks

Tasks Applicable Mission Phases Description SFWC Artifacts References
4.4.6-5-1 Ensure a complete system to subsystem to unit requirement verification plan is adequately developed and documented for the subsystem to support an overall system verification Phase A | Phase B | Phase C | Ensure verification plan addresses requirements verification to include units, assemblies, sub-assemblies and parts. Track evidence of analysis and test in the system and unit specifications, and require specification verification matrices to document where the requirements are verified. Ensure preliminary Independent Verification and Validation, and Integration and Test plan is ready at Preliminary Design Review and completed by Critical Design Review. Ensure any special test equipment is described at Preliminary Design Review and provided by Critical Design Review. Ensure verification plan reflects the intent of the Mission Assurance Standards. NA NA Space Vehicle Systems Engineering Handbook, TOR-2006(8506)-4494; Space Systems Verification Program and Management Plan, AIAA S-117-2010
4.4.6-5-2 Ensure the verification method is appropriate, adequate and documented Phase B | Phase C | Phase D1 | Ensure any verification by similarity is justified and documented by Preliminary Design Review, updated at Critical Design Review. Ensure that subsystem/major component verification addresses all requirements and requirements satisfied at a lower level are accounted for in the requirement verification documentation. Ensure unit level testing conforms to required standards testing. Ensure Test-like-you-fly process is implemented and like-you-fly tests are allocated to the unit/component level as appropriate. NA NA Space Vehicle Systems Engineering Handbook, TOR-2006(8506)-4494; Space Systems Verification Program and Management Process, AIAA S-117-2010
4.4.6-5-3 Ensure test planning adequately covers all operating modes and mission phases Phase B | Phase C | Phase D1 | Ensure Test-like-you-fly process is implemented and like-you-fly tests are allocated to the unit/component level as appropriate. NA NA Space Vehicle Systems Engineering Handbook, TOR-2006(8506)-4494
4.4.6-5-4 Ensure unit test plans are complete, objectives are clear and test success criteria are defined Phase A | Phase B | Phase C | Phase D1 | Good design and manufacturing principles will result in minimum returns and rework at the subsystem level NA NA Space Vehicle Systems Engineering Handbook (TOR-2006(8506)-4494)
4.4.6-5-5 Ensure special test facilities and equipment for integration and test verification are identified, reserved and or acquired Phase A | Phase B | Phase C | Phase D1 | Ensure that access to shared facilities (e.g. radiation, acoustics, thermal vacuum) that requires advance planning is considered. Ensure that a loading assessment for an appropriate number of internal shared equipment, such as test beds and engineering units to accommodate the baseline schedule, including multiple items/space vehicles in flow is considered. Some special test equipment may have long acquisition lead times. NA NA Mission Assurance Guide, TOR-2007(8546)-6018, Rev B, Integration, Test, and Evaluation Chapter
4.4.6-5-6 Ensure that all test procedures are finalized and that test hardware is in good condition Phase C | Phase D1 | Ensure that subsystem tests will be performed prior to vehicle-level testing. NA NA Space Vehicle Systems Engineering Handbook, TOR-2006(8506)-4494
4.4.6-5-7 Ensure that the proposed vehicle-level thermal balance testing includes hot and cold operational test phases and heater verification test phases Phase C | Phase D1 | Ensure that performance specification tests are performed for all subsystem and vehicle thermal tests (includes separate payloads. Performance specification tests are to be performed at hot and cold temperature plateaus on the first and last cycle and prior to and following the test. NA NA SMC-S-016 "Test Requirements for Launch, Upper-stage, and Space Vehicles 5 Sept 2014 or equivalent