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Uitgebreide Samenvatting Design for RAMS/LCC

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Dit is een uitgebreide samenvatting voor het vak 'Design for RAMS/LCC'. De verschillende begrippen worden uitgebreid behandeld naast de theorie en ook de aanvullende informatie en uitwerkingen van soorten berekeningen is te vinden in deze samenvatting.

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  • February 6, 2019
  • 30
  • 2017/2018
  • Summary

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RAMS AND LCC
SAMENVATTING




07-02-2018




Samenvatting RAMS en LCC

,INHOUDSOPGAVE

Week 1: Wat is rams? ..................................................................................................... 5

Officiele voorschriften .................................................................................................. 5

De verschillende soorten failures .................................................................................. 5

Welke kansfuncties kennen we nog? ............................................................................. 6

Hoe is de normering? ................................................................................................... 6

Wat is de verwachtingswaarde? .................................................................................... 7

Reliability – begrippen en definities ............................................................................... 7

stoorkansdichtheid....................................................................................................... 7

Stoorkansdichtheid R en F ............................................................................................ 7

MTTF en Failure rate.................................................................................................... 8

Crashcase week 1: De Havilland Comet 1B ....................................................................... 8

Week 2: Levensduurtesten ............................................................................................ 10

bronnen van degradatie ............................................................................................. 10

Normale verdeling ..................................................................................................... 10

Negatieve exponentiele faalkansfunctie ....................................................................... 10

MTTf bepalen met de normal distribution .................................................................... 11

Normale of poisson verdeling ..................................................................................... 11

Kansverdelingen ........................................................................................................ 11

Normale vs logonormale verdeling .............................................................................. 12

Gamma functie .......................................................................................................... 13

Reliability Bathtub curve............................................................................................. 13

Week 3: system reliability .............................................................................................. 14

Functional Hazard Assessment.................................................................................... 14

System reliability ....................................................................................................... 14

Reliability block diagram............................................................................................. 15

Complex systems ....................................................................................................... 16

Truth Table ............................................................................................................... 16




2

, Path sets................................................................................................................... 16

Cut Sets ‘Quick and Dirty’ ........................................................................................... 17

Cut sets the official method ........................................................................................ 17

Week 4: Fault Tree Analysis and standby system reliability .............................................. 18

FTA probability calculation.......................................................................................... 18

system reliability of standby systems .......................................................................... 19

Perfect switchover ..................................................................................................... 19

Imperfect switchover ................................................................................................. 20

Crashcase week 4: Turkish airlines B737 Crash ............................................................... 20

Week 5: Failure Mode Affect Analysis ............................................................................. 21

What is FMECA? ........................................................................................................ 21

USES for fmeca ......................................................................................................... 21

Performing fmeca – preparation ................................................................................. 21

performing FMECA – analysis ..................................................................................... 21

Performing FMECA – documentation ........................................................................... 22

Failures ..................................................................................................................... 22

criticality ................................................................................................................... 22

Certification Maintenance Requirements ...................................................................... 23

CMR versus MSG-3 .................................................................................................... 23

Week 6: operational safety ............................................................................................ 24

Hollnagel: 4 levels of control mode ............................................................................. 24

Operational safety and complexity .............................................................................. 25

Aircraft maintenance .................................................................................................. 25

Maintenance steering group ....................................................................................... 25

MSG philosophy ......................................................................................................... 26

General structure failure modes: ................................................................................. 26

Maintenance tasks ..................................................................................................... 27

Working groups...................................................................................................... 27

Industry steering comittee ...................................................................................... 27




3

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