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Flight Critical Systems Software Certification Initiative A Presentation to SAE Aerospace Control ... - page 5 / 24

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Flight/Safety Critical System Attributes

Performance

Performance

Capability to perform the function

Quantitative Metrics:  throughput, bandwidth, latency etc

Assurance

Assurance

Capability to sustain performance during mission

Quantitative Metrics:  PLOC, Fail-Op rqmt, etc

Confidence

Confidence

Capability to know that performance and assurance will execute correctly during mission.

Qualitative Metric:  collection of evidence that shows that the system is operating correctly

Performance

Assurance

Confidence

It’s not enough to design a flight critical system; there must be proof that it works…

Confidence must be integrated into the system design to reduce the need for testing!

Confidence needs some quantitativeness!

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