King Fahd University of Petroleum & Minerals Computer Engineering Dept
King Fahd University of Petroleum and Minerals Mechanical Engineering Department
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Transcript of King Fahd University of Petroleum and Minerals Mechanical Engineering Department
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King Fahd University of Petroleum and MineralsMechanical Engineering Department
Presented by
Mohammad Hazzazi
ID# 997584
19/10/2004
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WELCOME TO MY
CO - OP
PRESINTATION
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Title
PROCESSES AND QUALIFICATIONS FOR REPARING AND OVERHULLING
AIRCRAFT COMPONENTS
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OUTLINE:
GENERAL BACK GROUND ABOUT THE (AACC)
MY COOP PROGRAME
PRODUCTION AREA
ENGINEERING OFFICE
STUDY CASE
CONCLUSION
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GENERAL BACK GROUND ABOUT THE COMPANY:
The Aircraft Accessories and Components Company (AACC ltd) is an economic offset company established under the Ministry of Defense and Aviation, to repair and overhaul aerospace accessories and components.
(AACC) has 28 million in paid up capital. There are two investors for the (AACC); Operations and Maintenance Company (OMC) with86% and Saudi Arabian Airlines with 14%.
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The Aircraft Accessories and Components Company (AACC ltd)The Aircraft Accessories and Components Company (AACC ltd)BuildingBuilding
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WHAT DOES THE AACC DO?
1-Stripping/Disassembly:C-130 Propellers of Hamilton StandardC-130 Valve HousingC-130 Pump HousingC-130 Reduction GearboxF-15 Airframe Mounted Accessory Drive GearboxF-15 Jet Fuel StarterF-15 Fuel Control System
Assembly:F-15 Airframe Mounted Accessory Drive GearboxF-15 Fuel Control SystemF-15 Shafts
C-130 & F-15 Bearing cleaning and assembly.
Other……….
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CO-OP TRAINING ASSIGNMENTS C.O-OP K.F.U.P.M
STUDENT NAME :Mohammad Hazzazi
CO - OPENGINEER
AREASTART DATE
FINISH DATE
TIME PERIOD
COMMENTS
MACH.SHOP 7/2/2003 18/2/2004 2 WEEKS
FUEL CELL 21/2/2004 25/2/2004 1 WEEK
PROCESS 6/3/2004 10/3/2004 1 WEEK
ASSY - TEST
13/3/200420/3/2004
3/4/2004
17/3/2004 31/3/2004
7/4/2004
1 week1 week
1 WEEK
BALLSCREWAMAD / C.G.B.
R.G.B.
INSPECTION19/4/2004 21/4/2004 3 DAYS
TOTAL 11 WEEKS
ENG. OFFICE24/4/2004 11/8/2004 17WEEKS
MY COOP PROGRAME
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PRODUCTION AREA
• INTRODUCTION• MACHINE SHOP AREA• Fuel Cell• PLATING AREA • PROCEES AREA • ASSEMBLY AND DISASSEMBLY AREA • INSPECTION AND NON-DESTRUCTIVE TESTING
AREAS (NDI):
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1-MACHINE SHOP AREA
Machines name
Functions
Criteria
Surface grind
machine Grinding Outside surfaces.
Cylinder grinding
machine.
Grinding
Inside diameter grinding.
Grinding machine Grinding Outside diameter grinding
for huge components.
1st jeg machine
Drilling, surface
machining, tapping,
boring & milling.
Works vertically only, very
accurate.
2nd jeg machine
Drilling, surface
machining, tapping,
boring & milling.
Works in both directions,
less accurate.
1st milling machine
Drilling, surface
machining, milling,
boring & making
both spur & bevel
gears.
Works vertically only.
2nd milling machine
Drilling, surface
machining, boring
& milling.
Works in both directions.
Lathe machines
Turning machining,
grooving, tapering,
drilling, threading
both inside &
outside, parting off
& boring.
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The purpose of cell repair is to return a cell to a serviceable condition, to restore its ability to carry the maximum load permitted.
2- Fuel Cell
The entire procedure for repair and inspections of cells requires knowledge, experience and skill. Repair of fuel cells shall be accomplished in warm, dry place. The temperature should be controlled to maintain 60 to 90 degrees Fahrenheit (15 to 32 C˚)
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3- PLATING AREA
In this area, treatment by chemical solutions takes place. It serves two purpose :
1- Protect components against corrosion by providing a protection layer on their surfaces.
2- Increase the material size of some items.
Blade : hot cleaner Blade : hot cleaner cold swill cold swill chromic anodize chromic anodize
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4- PROCEES AREA
This area to overhaul, clean and repair the blades and their components. Also called the work area because it do a lot of pre work for the components before it is passes to other areas. This area contains 6 main sections. These sections are :
• Panting sectionPanting section•Breaks repairing sectionBreaks repairing section•Measuring sectionMeasuring section•Deicing sectionDeicing section•Moulding sectionMoulding section•Jet water sectionJet water section
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• The station of the blade measurements.• The edge alignment measurements.• The thickness for each station.• The angle.• The face alignment.• The width.
4-a :Measuring section:4-a :Measuring section:
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4-b :Jet water section4-b :Jet water section
This section is for removing foam from blades beside the lead at the end of the blade using special machine called “ the jet water". This machine can pump water up to 20,000 psi. The necessary pressure to achieve the previous target is 10,000 psi.
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CGB> 1000 hrs→ overhaul< 1000 hrs→ repair.
RGB> 5000-hrs→ overhaul< 5000-hrs→ repair
Propeller> 2000 hrs→ overhaul< 2000 hrs→ repair
AMAD < 500 F→ overhaul < 500 F→ repair.
5- ASSEMBLY AND DISASSEMBLY AREA
In the stripping (disassembly) area, the technician receives the parts and stripes them according to the QPI (Quality Production Inspection Schedule).
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• INSPECTION AREA
• NDT
• The magnetic particle NDT method
• The fluorescent penetrant NDT method
6- INSPECTION AND NON-DESTRUCTIVE TESTING AREAS (NDI):
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7- ENGINEERING OFFICE
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•WHAT A MECHANICAL ENGINEER IS DOING• Mechanical engineers at AACC have a group of
jobs and activities to do. The most important thing of these jobs and activities is the First Article Qualification Projects (FAQ). Whenever a new part that has never been to or reworked at AACC is delivered to company, some procedures have to be followed
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QPI
Standard Replacement List ( SRL )
Scrape / Serviceable Parts
View Inspectio
n
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STUDY CASE:
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I was asked to do the First Article Qualification (FAQ) Project to develop the capabilities to overhaul and repair for the (Four Inch Diameter Pneumatic Butterfly Shutoff Valve). The engineer responsible for this project asked me to analyze and put procedure for repairing such Butterfly Shutoff Valve . Finally he told me to write my observation on a report and handle it to him to review it.
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The four-inch diameter pneumatic butterfly shutoff (load control) valve, located on an outlet port on the top right side of the turbine plenum assembly, functions as a bleed-air shutoff and load control valve for compressed air output. The load control valve includes a butterfly valve, a rate control and pneumatic actuator,
solenoid valve and a poppet valve along with diaphragm assemblies, linkages and connection.
ANALYSIS:
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1 -Writing the QPI
2-Strip Disassembly
3- Parts Names :
Work Step:
1. Body assembly 3. Arm, Linkage 2. Body, Actuator 4. Housing, Actuator 3. Retainer, Piston 6. Link, Intermediate
See page 48QPI
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Need Special Tools
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Seal Metal Puller
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Inspection
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HELPING THE ENGINEERS M1A2 TANK
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Design Tools
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Conclusion
• FAQ• QPI• Team work• JOP
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