SUBTOPICS OF MODULE 3

Module 3 will be into 18 subsection following the system in part 66 under EASA. The topics will as follows:

1. Electron Theory
2. Static Electricity and Conduction
3. Electrical Terminology
4. Generation of Electricity
5. DC sources of electricity
6. DC Circuits
7. Resistance and Resistor
8. Power
9. Capacitance and capacitor
10. Magnetism
11. Inductance and Inductor
12. DC Motor/ Generator Theory
13. AC Theory
14. RCL Circuits
15. Transformers
16. Filters
17. AC Generators
18. AC Motors

My Learning - Determistic Data Com Ethernet

As I am consolidating my blogs, I am transferring a posting from my aviation learning blog   

This is about my path to learn a new technology

I am learning about data communication in the modern aircraft. It is using ethernet technology, modified to meet the aviation requirements of on-time performance.

My learning will be based on internet research starting with video..

 The latest airliner like A380 is using ethernet technology for its communication. Many of us are aware of the shortcoming of the COTS (commercially off the shield technologies) and its unsuitability to manage the data communication in an aircraft. Some of the issues are, the ethernet respond time is beyond the acceptability limit and technology is designed on the best efforts. That mean if component A send the data to actuator B, the system tries its best to send the data, if it is not received, A will send te second time.

TO TRANSFER FROM OTHER BLOGS

 When I was actively teaching, I have different blogs for different modules. Now I need to transfer these posting to one blog only,  the virtual part 66 school.

Processes:

1. Convert the posting in the out going blogs to Draft 

2. Transfer the contents to Virtual Part 66 school and publish it.

3. Transfer the assets to Virtual part 66 school.

4. Delete post by post in the outgoing blogs.

5. delete the blogs.

Post Title: My Class - Basic Electric 29 Jan 2013

From my earlier Blog:  My Part 66 class/ This blog is deactivated

Transfer to : My Current Blog - Part 66 Virtual School

I was doing the class for Basic Electric to 14 students.
 I am sharing the photos...

In learning theory, different students have different preferred learning style.

There are a number of theory about learning style. Samples of the theory are..

a.  Neil Fleming's VAK/VARK model where a student may have his own learning preference such as, visual learning, auditory or experiential learner.

The learning is most effective in the experiential learning, as such the students work or group work is given.

OTHER CLASS Module 4

 

REVISED BLOGGING

 As I am already retired, I will be consolidating and reduce the number of blogs.

I will maintain this blog,  http://part66school.blogspot.com/

The following blogs, their contents will be moved and later to be deleted.

1. Blogs of Part 66 modules...3,4,5,7 and 11A will be deleted. (5Blogs)

2. Virtual AME School will be deleted.

JOHARI 

TEACHING IMA ATA 42

My school is an approved ATO under the Malaysian CAAM, previously known as Malaysian DCA. The same course is also recognized by the Malaysian Education Ministry and Degree will be awarded by the University.

One of the course is called Integrated Information System. The subjects taught include the EASA Part 66 subjects, ATA 42, 44, 45 and 46. As it is meant to meet the requirements of the Education Authorities, it must include the subjective questions.

Here is an example.

 The students are to write from the technical aspects, for example, if you want to write about AFDX, write about the transmission concept,  how the system operates and what are the hard wares or components  involved.

Student Visit HS 125 ATA 30 Ice and Rain

Today we have another day of student's visit. Although it is a dead aircraft, with many parts missing, it still help the the students to virtualize the aircraft systems and the operation.

1. ATA 30 - anti-ice
a. Ice detector - rotary type. Brief students how it work.
- Control switched and indication in the cockpit

The serrate piece turn freely when no ice

b. Deicer system  with deicing panel in the wing leading edge.

Perforated wing leading edge allows the chemical to seep put and blown to the top of the wing to remove ice.

wing with perforated leading edge

Wing and Tail Anti Ice Switch - On/OFF for continuous operation. Timer provided for a selected timer operation

c. Wing illumination light.  

My Aircraft Visit HS125 ATA 30 Pitot and Windshield

Last week I went to visit the aircraft, to prepare for the students visit.

I am sharing some of the pictures.. I was doing the ATA 30 Ice and Rain Protection.

The visit was to let the students see the systems in an aircraft.

Ice and rain protection includes the following topics...
- ice detector
- wing anti- ice
- windshield anti ice.
- pitot static anti ice.

A. Ice Detector
I use to work on Boeing Aircraft. There was no ice detector. HS 125 has it. It is using a rotary type. Here is the picture of the detector.

ice detector - rotary type

The serrated piece rotates freely if no icing. When icing, the force to rotate increases, and a s/w is actuated.

Switches to turn On /OFF the wind Screen Anti Ice.

Module 13

Next semester, I will be teaching part of module 13, for the following topics...
- Hydraulic , Landing Gear and Flight Control.
- Pneumatic , Aircondition and Vacuum system.
- Engine - Starting and Ignition
- Fuel and Fire Protection.

The  syllabus for EASA are as follows...

13.7 Flight Controls (ATA 27)
(a) Primary controls: aileron, elevator, rudder, spoiler; Trim control; Active load control; High lift devices; Lift dump, speed brakes; System operation: manual, hydraulic, pneumatic; Artificial feel, Yaw damper, Mach trim, rudder limiter, gust locks. Stall protection systems.	-	-	2
(b) System operation: electrical, fly by wire.	-	-	3

13.11 Air Conditioning and Cabin Pressurisation (ATA 21)
13.11.1 Air Supply	-	-	2
Source of air supply including engine bleed, APU and ground chart
13.11.2 Air Conditioning
Air Conditioning Systems;	-	-	2
Air cycle and vapour cycle machines;	-	-	3
Distribution systems;	-	-	1
Flow, temperature and humidity control system;	-	-	3
13.11.3 Pressurisation
Pressurisation systems;	-	-	3
Control and indicating including control and valves;
Cabin pressure controllers;
13.11.4 Safety and warning devices Protection and warning devices.	-	-	3

13.12 Fire Protection (ATA2 6)
(a) Fire and smoke detection and warning systems;	-	-	3
Fire extinguishing systems; System tests.
(b) Portable fire extinguisher	-	-	1
13.13 Fuel Systems (ATA 28)
System layout;	-	-	1
Fuel tanks;	-	-	1
Supply systems;	-	-	1
Dumping, venting and draining;	-	-	1
Cross-feed and transfer;	-	-	2
Indications and warnings;	-	-	3
Refuelling and defueling;	-	-	2
Longitudinal balance fuel systems;	-	-	3
13.14 Hydraulic Power (ATA 29)
System lay-out	-	-	1
Hydraulic fluids;	-	-	1
Hydraulics reservoirs and accumulators;	-	-	1
Pressure generation, electrical, mechanical, pneumatic;	-	-	3
Emergency pressure generation;	-	-	3
Filters;	-	-	1
Pressure control;	-	-	3
Power distribution;	-	-	1
Indication and warning systems;	-	-	3
Interface with other systems;	-	-	3

13.15 Ice and Rain Protection (ATA 30)
Ice formation, classification and detection;	-	-	2
Anti-icing systems: electrical, hot air and chemical;	-	-	2
De-icing systems: electrical, hot air, pneumatic, chemical;	-	-	3
Rain repellent;	-	-	1
Probe and drain heating;	-	-	3
Wiper systems;	-	-	1

13.16 Landing Gear (ATA 32)
Construction, shock absorbing;	-	-	1
Extension and retraction systems: normal and emergency	-	-	3
Indications and warnings;	-	-	3
Wheel, brakes, antiskid and autobraking;	-	-	3
Tyres	-	-	1
Steering Air ground sensing	- -	- -	3 3

13.18 Pneumatic/Vacuum (ATA 36)
System lay-out	-	-	2
Sources; engine/APU, compressors, reservoir, ground supply	-	-	2
Pressure control;	-	-	3
Distribution;	-	-	1
Indicators and warnings;	-	-	3
Interfaces with other systems;	-	-	3

13.19 Water / Waste (ATA 38)	-	-	2
Water system lay-out, supply, distribution, servicing and draining;
Toilet system lay-out, flushing and servicing

14.1 Turbine Engines
(a) Constructional arrangement and operation of turbojet, turbofan, turboshaft and turbopropeller engines;	-	-	1
(b) Electronic Engine control and fuel metering systems (FADEC).	-	-	2

14.2 Engine Indicating Systems	-	-	2  UNDER TURBINE ENG/ INDICATION AJB 30503
Exhaust gas temperature/Interstage turbine temperature systems; Engine speed; Engine Thrust Indication: Engine Pressure Ratio, engine turbine discharge pressure or jet pipe pressure systems; Oil pressure and temperature; Fuel pressure, temperature and flow; Manifold pressure; Engine torque; Propeller speed.

14.3 Starting and Ignition Systems	-	-	2
Operation of engine start systems and components;
Ignition systems and components;
Maintenance safety requirements

Reading The Wiring Manual

I am grateful to http://www.aircraftmech.com/ for writing a good practical guide to read the wiring diagram.

I include the snap shot of the web page to help readers to make an easy reference.

http://www.aircraftmech.com/

Maint Work/ Replace wire

Here I insert reference for maintenance work.

The task selected is replacing wire on an engine...

Please refer to the quoted web page for more details...

The link is.... http://www.aircraftmech.com/

Structure Monitoring

The DCAM syllabus as in the AN1101 includes the topic on Structure monitoring (damage tolerance monitoring) under ATA 45, in the following modules:

1. Module 11A - Fixed Wing/ Turbine    Level 2
2. Module 12 - Rotary Wing  . Level 2
3. Module 13 - Avionics  -  Level 3


One of the issues involved are the reference documents, as the subject is relatively new, thus reference books are not readily available.

I had divided the topic of structuring monitoring into three (3) sub topics:
- Structural Health Monitoring
- Aircraft Integrated Maintenance System
- Health and Usage Monitoring

A quick google search reveals some results:

A. Structural Health Monitoring
a. Wikipedia - https://en.wikipedia.org/wiki/Structural_health_monitoring 
b. Structural health monitoring - ‎Balageas - Cited by 40
c. Powerpoint on Life Management of Aircraft


Note:
1. B777 - no mention of structural maintenance in the MM ATA45.

NEW AVIONICS REFERENCES

One of the problems in learning the new avionics, i.e ATA 42, 44, 45 and 46 is to get a suitable reference or notes. For that reason, I rely on the internet to get the note from Airbus and Boeing. In most cases, I prefer to search for A380 note.

Here are the example:
A. ATA 42 - Integrated Modular Avionics

a. I will search for "A380 ATA 42 note"

This is what I get....

The information is enough to get me started.

AFDX and IMA

IMA or integrated modular avionics is one of the four new avionics ATA for modern aircaft. IMA or integrated modular avionics is under the ATA 42, used by A380 and later aircraft.

AFDX is the data communication network utilized in the IMA system. Of course, there are other data network, such as ARINCS 429, 629 utilised in the IMA system, but AFDX was specifically designed to meet the IMA requirement. The AFDX is specified in the ARINC 664 part 7.

To assist in learning about AFDX, I include some links.

a. PDF powerpoint... at http://www.afdx.com/pdf/AFDX_Training_October_2010_Full.pdf

b. Youtube Video ///

ATA 44 CABIN SYSTEM

I faced challenges to conduct courses on the ATA 44.

To start with, this is a new ATA, and not many references are available. If you were to check the aircraft's ATA, there are not many aircraft types using ATA 44.  This forced me to select A380 as the reference module.

The reference are readily available in the internet.

This as an example..

 I was using four reference to prepare the course...

1. Airbus training manual
2. Airbus Maintenance Manual
3. Flight Crew Manual
4. Crew guides

TRANSFORMER

Transformer is included to module 3. The syllabus is as follows...

3.15 Transformers (L2)
Transformer construction principles and operation;
Transformer losses and methods for overcoming them;
Transformer action under load and no-load conditions;
Power transfer, efficiency, polarity markings;
Calculation of line and phase voltages and currents;
Calculation of power in a three phase system;
Primary and Secondary current, voltage, turns ratio,power, efficiency;
Auto transformers.

I have included a short youtube video, It is noted that the video does not cover the whole syllabus...





I intend to add more contents

Integrated Modular Avionics (IMA)

This is one of the 4 new ATA chapters. The IMA is under 42.

A. INTRODUCTION

The DCAM syllabus gave a lengthy write up. I believe, this was done as the subjects were new and not many were familiar. I would divide the syllabus into three groups..

1. Network system and Components.
2. Core System
3. Typical system

However in teaching and learning the subject, the approach is changed slightly. There are some topics which as not within the syllabus, but becomes necessary in order to understand the IMA. The topics are:
- Circuit and Packet switching.
- Ethernet
- ARINC 429 and 629

A. Circuit Switching and Packet switching, -
A video can explain the

- The following is about ethernet.
Yesterday, we did the first quiz, 1. AFDX uses the following two concepts: - virtual links - BAG - band allocation gap Write a short description on the above topics.

Update

I had update the links to include

- study guide

- Questions

- Other links

MAGNETISM

Linked Resources

1. http://www.allaboutcircuits.com/textbook/direct-current/chpt-14/permanent-magnets/

Automatic dependent surveillance – broadcast

I remember the day that MH370 was missing, and until today there are trace of it.

On 30 Jan 2015, the aircraft was officially announced as "loss" and the appropriate insurance claim may be made.



Some of the Sources for the above topic are:

1. http://en.wikipedia.org/wiki/Automatic_dependent_surveillance_%E2%80%93_broadcast


2. http://partners.decisionbriefs.com/rotor-and-wing/article/freeflight-systems-ads-b-university/

--

Papers:AFDX: The Next-Generation Interconnect for Avionics Subsystems by Condor Tech (pdf)

This was was obtained through an online magazine http//www aviationtoday com/

Three Phase Induction Motor

UNDER EDITING

Students should be able to perform the following:

A- explain the construction of the ac induction motor.
B- explain the concept of rotating field and how it is created.
C- explain the working of the rotor
D- calculate the speed of rotating field .
E- calculate slip speed ans speed of the rotor


Many of my students find it difficult to understand the AC induction motors.

It does not matter whether it is 3 phases or 2 phase motor, because the principle is the same.

It needs the understanding of 2 concepts:

- the rotating magnetic field
- the rotor

It is the interaction of the rotating field and the rotor will cause the rotor to rotate.

B. Creation Of Rotating Field
This is better explained by video used by this video

DC Generator Overhaul

UNDER  EDITING




Testing The Armature
There are 2 basic test:
- Using meter
- Using Growler

1. Test Using Gowler
Growler is like the primary winding of a transformer. When the armature is positioned on the growler, the armature is acting like the secondary of the transformer. However, please take note that the secondary winding of the armature is open circuit, so no current flows in the armature windings but there are the induced voltage

a. Check for short circuit.