Scribd
Upload
100 views35 pages

APU Systems Overview

The document discusses the auxiliary power unit (APU) of aircraft. It includes 35 sections with figures describing the various components, systems, and functions of the APU, including the compressor, ignition and starting system, bleed air system, cooling and ventilation, electrical control box, and protective shutdown systems. The purpose of the APU is to provide electrical and pneumatic power on the ground and in-flight without using the main engines.

Uploaded by

Ami Kar
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
100 views35 pages

APU Systems Overview

The document discusses the auxiliary power unit (APU) of aircraft. It includes 35 sections with figures describing the various components, systems, and functions of the APU, including the compressor, ignition and starting system, bleed air system, cooling and ventilation, electrical control box, and protective shutdown systems. The purpose of the APU is to provide electrical and pneumatic power on the ground and in-flight without using the main engines.

Uploaded by

Ami Kar
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
You are on page 1/ 35

AeronauticalInstituteofBangladesh

AuxiliaryPowerUnit

Figure001

AeronauticalInstituteofBangladesh

AuxiliaryPowerUnit

Figure002

AeronauticalInstituteofBangladesh

AuxiliaryPowerUnit

Figure003

AeronauticalInstituteofBangladesh

AuxiliaryPowerUnit

Figure004

AeronauticalInstituteofBangladesh

AuxiliaryPowerUnit

Figure005

AeronauticalInstituteofBangladesh

AuxiliaryPowerUnit

Figure006

AeronauticalInstituteofBangladesh

AuxiliaryPowerUnit

Figure007

AeronauticalInstituteofBangladesh

AuxiliaryPowerUnit

Figure008

AeronauticalInstituteofBangladesh

AuxiliaryPowerUnit

LoadCompressor:Components

Figure009

AeronauticalInstituteofBangladesh

AuxiliaryPowerUnit

IGVControl
Figure010

10

AeronauticalInstituteofBangladesh

AuxiliaryPowerUnit

Figure011

11

AeronauticalInstituteofBangladesh

AuxiliaryPowerUnit

Figure012

12

AeronauticalInstituteofBangladesh

AuxiliaryPowerUnit

Figure013

13

AeronauticalInstituteofBangladesh

AuxiliaryPowerUnit

Figure014

14

AeronauticalInstituteofBangladesh

AuxiliaryPowerUnit

Figure015

15

AeronauticalInstituteofBangladesh

AuxiliaryPowerUnit

Figure016

16

AeronauticalInstituteofBangladesh

AuxiliaryPowerUnit

Figure017

17

AeronauticalInstituteofBangladesh

AuxiliaryPowerUnit

Figure018

18

AeronauticalInstituteofBangladesh

AuxiliaryPowerUnit

Figure019

19

AeronauticalInstituteofBangladesh

AuxiliaryPowerUnit

Ignition&StartingSystem
Figure020

20

AeronauticalInstituteofBangladesh

AuxiliaryPowerUnit

APU Starter Clutch


Figure 021

21

AeronauticalInstituteofBangladesh

Figure 022

22

AuxiliaryPowerUnit

AeronauticalInstituteofBangladesh

APU Start Acceleration Curve


Figure 023

23

AuxiliaryPowerUnit

AeronauticalInstituteofBangladesh

Starting Electrical Circuit (Block)


Figure 024

24

AuxiliaryPowerUnit

AeronauticalInstituteofBangladesh

APU Bleed & Surge Air


Figure 025

25

AuxiliaryPowerUnit

AeronauticalInstituteofBangladesh

Bleed Load Valve


Figure 026

26

AuxiliaryPowerUnit

AeronauticalInstituteofBangladesh

Surge Control Valve


Figure 027
27

AuxiliaryPowerUnit

AeronauticalInstituteofBangladesh

Bleed & Surge Air System


Figure 028

28

AuxiliaryPowerUnit

AeronauticalInstituteofBangladesh

AuxiliaryPowerUnit

Figure 029: Bleed & Surge Air Schematic


29

AeronauticalInstituteofBangladesh

APU Cooling & Ventilation


Figure 030

30

AuxiliaryPowerUnit

AeronauticalInstituteofBangladesh

APU Cooling Air Supply


Figure 031

31

AuxiliaryPowerUnit

AeronauticalInstituteofBangladesh

Figure 032

32

AuxiliaryPowerUnit

AeronauticalInstituteofBangladesh

ECB Power Supply


Figure 033

33

AuxiliaryPowerUnit

AeronauticalInstituteofBangladesh

ECB Front Panel


Figure 034

34

AuxiliaryPowerUnit

AeronauticalInstituteofBangladesh

APU Protective Shutdown


Figure 035

35

AuxiliaryPowerUnit

You might also like