National Aviation University

Aerospace Institute

Aircraft Faculty

Aircraft Airworthiness Retaining Department

Computing and schematic paper

on the subject

“MAINTAINING THE AIRWORTHINESS OF THE AIRCRAFT”

on theme

«Analysis of failures and damage to structural elements of the fuel system Tу-154 search algorithm development and their causes»

Variant 1

Mark:____________________ Made by Suprunets M.V.

Date:____________________ Group 505-2 FLA

Signature:_______ Checked by

Goncharenko A.V

Kiev 2016

Aircraft Airworthiness Retaining Department

TASK

for computing and schematic paper

Discipline: “Continued Airworthiness”

Theme: “Analysis of failures and damage to structural elements of the fuel system Tу-154 search algorithm development and their causes”

Issues by assistant professor A.V. Goncharenko

Date___________________ Signature_______________

Received by student of 505 FLA Suprunets’ M.V

Date___________________ Signature_______________

Contents

1. Introduction ……………………………………………………………...	4
2. Short description of the design and operation of fuel system Tу-154 and its elements…………………………………………………………………	4
3. Block diagram of the system…………………………………………….	7
4. Systematization and classification of specific functional failures and damage to the system and its components………………………………….	10
5. Analysis of the efficiency of the fuel system of Tu-154 failures of its individual elements..........................................................................................	12
5.1 Calculating the probability of failure-free operation of other elements, blocks and system…………………………………………………..	12
6. Structural improvement………………………………………………….	15
7. Algorithm development for detection of problem with functional system of the aircraft………………………………………………………………..	16
Conclusion…………………………………………………………………..	18
Reference……………………………………………………………………	19

1. Introduction

By itself the graphical calculation work shows designing of separate elements of the maintenance (M) system of aviation technique on the basis of their faultlessness and operational manufacturability analysis.

An explanatory note for the term paper consists of such sections:

• short description of the given system with the principle system;

• structural and functional analysis of the system;

• calculation faultlessness indexes of the system and its elements;

• systematization and classification of the most probable refusals and failures of functional system elements;

• operability analysis of the system with refusals or failures of its separate elements;

• algorithm development for maintenance personnel actions relatively to the reasons of failures searching of given aircraft functional system.

Properly made structural system and logic-functional analysis of a given system gives a possibility for performing the qualitative faultlessness and operational manufacturability analysis.