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Flight Critical Systems Software Certification Initiative A Presentation to SAE Aerospace Control ... - page 4 / 24

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Background:   V&V Requirements

Flight Critical

Mission Critical

System Focus is Performance/Security

Performance Metric: Throughput and Bandwidth [event driven]

Assurance Metric:  Probability of Mission Success [Simplex or Back-up]

Confidence Rqmt:  Performance and security are validated.

Consequence of Failure: Potential mission failure

System Focus is Performance/Assurance

Performance Metric:  Sampling Rate and Latency [time triggered]

Assurance Metric:  Probability of Loss of Control and N x Fail Op/Fail Safe [Triplex or Quad]

Confidence Rqmt:  Performance and Assurance must be validated; [Failure Modes and Effects Testing]

Consequence of Failure: Loss of Aircraft, potential loss of life

Rule of Thumb:  When you mix mission with flight criticality , the testing is held to most stringent requirement.

Consequence of Failure: Loss of Aircraft, potential loss of life

Developmental Timeline:

Flight Critical ready by First Flight!

Any changes requires Total Re-test!

Failure Modes and Effects Testing

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