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Flap Strut Fairing System Expluatation and Critical Path Method Use

Sintija Zetliņa
Sintija Zetliņa
 oraz 
Mārtiņš Kleinhofs
Mārtiņš Kleinhofs
   | 13 mar 2024
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Article Category: research article
Data publikacji: 13 mar 2024
Zakres stron: 29 - 44
Otrzymano: 09 gru 2023
Przyjęty: 08 sty 2024
DOI: https://doi.org/10.2478/tar-2024-0003
Słowa kluczowe
© 2024 Sintija Zetliņa et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1.

Critical path network.
Critical path network.

Fig. 2.

Flap strut fairing system operating component change.
Flap strut fairing system operating component change.

Fig. 3.

Flap track fairing assembly.
Flap track fairing assembly.

Systems action plan to calculate probability

Events (N) Action (T0) Action (TM) Action (Tp) (Tp – T0) Standard deviation Probability
0–1 0 2 4 4 4/6 0.66
1–2 2 4 5 3 3/6 0.5
2–3 2 5 4 2 2/6 0.33
3–4 4 6 8 4 4/6 0.66
4–5 3 6 8 5 5/6 0.83
5–6 2 6 5 3 3/6 0.5
6–7 4 7 10 6 6/6 1
8 4 9 11 7 7/6 1.16

Time calculation for component failure

The system works without failure Material, which should be replaced more often after the inspection, because the service time has passed Material and components that do not need to be changed Materials and components that have reached their limit and must be changed immediately
E1-Interval for inspection after flight FH 0 0 0 0
E2-Interval for inspection after flight cycles FC 0 0 0 0
E3-Inspection according to the requirements of the technical programme 0 0.3 0.3 0.3
E4-Inspection according to the manufacturer’s requirements 0 0 0 0

Composite material stress concentration patterns.

A1: X = min(Y1,…, Y0.16, Z1,…, Z0.17–0.16) B1:X={ min(Y1,…,Y0.16),KL>0;min(Z1,…,Z2);KL=0; ${B_1}:X = \{ \matrix{ {\min ({Y_1}, \ldots ,{Y_{0.16}}),{K_L} > 0;} \hfill \cr {\min ({Z_1}, \ldots ,{Z_2});{K_L} = 0;} \hfill \cr } $
A2: X = min(Y1,…, Y0.16,…, Z) B2:X={ min(Y1,…,Y0.16),KL>0;Z,KL=0; ${B_2}:X = \{ \matrix{ {\min ({Y_1}, \ldots ,{Y_{0.16}}),{K_L} > 0;} \hfill \cr {Z,{K_L} = 0;} \hfill \cr } $
A3: X = min(Y, Z) B3:X={ Y,KL>0,Z,KL=0. ${B_3}:X = \{ \matrix{ {Y,{K_L} > 0,} \hfill \cr {Z,{K_L} = 0.} \hfill \cr } $

Flap strut fairing assemblies operating time.

Events (N) Action (T0) Action (TM) Action (Tp) Te =T0 + 4Tm + Tp /6
Flap track systems including receiving flap track system information after flight 0–1 0 2 4 6
Flack track fairing maintenance and planning coordinators 1–2 2 4 5 3.8
Evaluation of wing system technical information includes flap track system and defect closure by voting on the test (FIM tasks) options 2–3 2 5 4 4.3
Closing the flange rail system defect after using technical information (Aircraft Maintenance manual), during which flange rail system components are replaced 2–7 3 6 9 6
Closing the defect in the flange rail system is not possible immediately and requires an in-depth investigation of the defect/structure 3–4 3 6 9 6
Closing the defect of the flange rail system, if it is within the possible limits 3–7 3 7 9 6.6
Closing the defect in the flange rail system is not possible immediately and requires a deeper defect/structure 3–4 4 6 8 6
Transfer of engineering information on flange rail system components and smaller bill of materials to the logistics department 4–5 3 6 8 5.8
Transfer of engineering information on flange rail system components and smaller bill of materials to the logistics department 5–6 2 6 5 5.1
Damage to the outer composite material shell of the flange rail mechanism and its evaluation 2–4 6 8 9 7.8
Evaluation of the certification status of the materials/components of the flange rail system and the time of manufacture of the components/materials 5–7 3 7 9 6.6
Delivery of additional materials and tools needed for the flange rail system mechanism to the specific location 5–7 4 7 8 6.6
Successful completion of the repair of the flange rail system mechanism 6–7 4 7 10 7
The closure is closed by the completion of the system process and the preparation of all necessary documentation 7–8 4 7 9 6.8
eISSN:
2545-2835
Język:
Angielski
Częstotliwość wydawania:
4 razy w roku
Dziedziny czasopisma:
Engineering, Introductions and Overviews, other, Geosciences, Materials Sciences, Physics
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