Austin, Rebekah

Karsai, Gabor

Mahadevan, Nag

Reed, Robert

Schrimpf, Ron

Sierawski, Brian

Witulski, Arthur

English

DigitalCommons@USU

• Use R-GENTIC• Should be addressed early in design phase, before PDR• Do not need to know specific part numbers, just general part typesWhy use a model-based approach for RHA?This work supported by NEPP and NASA OSMA Grant and Cooperative Agreement Number 80NSSC18K0493Rebekah A. Austin, B. D. Sierawski, A. F. Witulski, R. D. Schrimpf, R. A. Reed, G. Karsai, N. MahadevanContact: Rebekah.a.Austin@vanderbilt.eduEffective Small-Satellite Radiation Assurance for Non-Specialists• Contains the following functionalities:– System Modeling Language (SysML)• Requirement Diagrams• Block Diagrams– Fault modeling (within SysML block diagrams)– Functional Decomposition– Graphical Argument Structure (GSN)https://modelbasedassurance.org• Exports via XML– Bayes Nets– Fault Trees• Radiation-related tools– CRÈME – R-GENTICSEAMhttps://vanguard.isde.vanderbilt.edu/RGentic/Select EnvironmentRadiation Fault ModelsReliability RequirementRadiation Hardness AssuranceRadiation EnvironmentPart Use in SystemRadiation Test Results Reliability PredictionR-GENTICHow do designers model how the radiation-induced faults propagate through the systems?How do designers know the effect of radiation on parts?How do designers capture and analyze radiation hardness assurance activities?Select PartOutput of tool• Select representative environment– Orbit, Altitude, Sun Cycle, Class, Lifetime, Architecture• Select representative parts– Designator, Family, Function, Process, Criticality• Outputs of tool– Description of radiation for similar environments– For each part: Typical line of questioning, Radiation concerns, Greatest system concern• Analysis of the expected ionizing radiation environment and its impact on the system– Effects cause part degradation and random events from energy deposition of the ionizing particles What is radiation hardness assurance (RHA)?• Use SEAM• Radiation fault models for different part types • Analyze how faults in parts propagate through the system• Use graphical arguments like Goal Structuring Notation to link arguments with models of the systemSysML Block Diagram• Captures a “digital copy”– Enables knowledge capture, sharing, and continuity• Radiation effects and reliability ultimately need to analyzed at the system level– Knowledge about the system is needed– Complements and uses model-based system engineering processes and languagesSSC19-WP1-04

Effective Small-Satellite Radiation Assurance for Non-Specialists

https://digitalcommons.usu.edu/cgi/viewcontent.cgi?filename=0&article=4325&context=smallsat&type=additional

Effective Small-Satellite Radiation Assurance for Non-Specialists

Abstract

Similar works

Full text

Available Versions

DigitalCommons@USU