Reliability Block Diagram of Space Shuttle three Main Engine

Engineμ=.0004

Engineμ=.0004

Engineμ=.0004

Computerμ=.001

Space

Shuttle Crash

Unresponsive Space shuttle

Loss of Lift Force

Engine Over-heated

High Temperature

Reading

Fault Tree AnalysisShuttle Three Main EnginesWithout Computer

Engine failure

Loss of Lift Force

Engine Over-heated

High Temperature

Reading

Engine failure

Loss of Lift Force

Engine Over-heated

High Temperature

Reading

Engine failure

Event Tree AnalysisShuttle Three Main EnginesWithout computer

High TemperatureReading

True

TrueUncontrolledLanding, with Possible lossof vehiche

Initial Event Engine Over-heated Loss of Lift Outcome

False

False

Normal OperationOf Engine

Mission aborted withControlled Landing