Курсовая работа: Working out of the search algorithm of failures of Air Conditioning System of TU-154

D2

D12

D1

D5

D 15

D3

D4

D36

D6

D5

Abbreviations and reference designation:

Diagnoses:

D1 - incorrect tubes` installation

D2 - non-pressurized internal cavity

D3 - weakened fitting

D4 - damage of a housing

D5 - non-pressurized part of line

D6 - wrong installation

* - number of diagnoses that are controlled by this sign

** - diagnoses, which are controlled

Signs of failures:

X1 - raised temperature in pipeline

X2 - unsatisfactory pressurization of right mainline

X3 - unusual noise in the cabin

X4 - no air supply to ACS

X5 - fumes in passenger cabin

Evaluation of probability of diagnoses appearance is calculated by the formula:

, , (1)

where ni - number of cases of appearance of і diagnose; N - number of all diagnoses of system aggregates.