Chemistry Lab Aircraft

CHEONG HO CHOI

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MECHANICAL AEROSPACE ENGINEER

A highly skilled Senior Mechanical Aerospace Engineer Designer with over Twenty years more of experience in conducting detail design analysis of fixed and rotary wing flight vehicle systems and components using design CAD/CAE (FEA/FEM) with engineering drawings as well as traditional analytical handbook methods along with testing validation & optimization. Focusing on Stress Analysis, Mechanical engineering design analysis, Aerodynamics, Wind Tunnels, Ground and Flight Testing. Highly competent in leading Mechanical Aeronautical engineering Design and Modification projects for Airplanes, Unmanned Air Vehicles and Gyrocopters with respect of the government authorities’ regulations (TCCA, FAA & EASA). Exceptional experience in Product Integrity on the aircraft final assembly line, and good understanding of AS 9100, all Canadian aviation regulations and Transport Canada Type & Airworthiness Certifications. Expert of the Aircraft Structure and the FDTA (Fatigue and Damage Tolerance Analysis, Flight Data compile and analysis, Health Monitoring Technology).and design application. HIGHLIGHT OF SKILLS

Practiced actively to different Continued Airworthiness Triage meetings as product integrity focal for the program of Military and Civil aircraft

Performed and Dealt with the government authorities for the certification of improved and modified aircraft and UAV

Leaded high number of successful Wind Tunnels tests and Flight tests for different flight vehicles focusing on Performance

Hands on mechanical aerospace design tools as CATIA, SolidWorks, Inventors, AutoCAD & ANSYS (FEM/FEA) with the application on different aerospace systems and components

Project manager design and modification of a new Gyrocopter; Full Design, Production Process with material selections, applied tolerance analysis (based on ASME Y14.5-2009), Final Assembly, some structural modifications, ground and flight tests.

Good knowledge and familiarity with Standard AS9100, ISO 9001, STD.004-SMS, BM6032, BM6060, MIL-STD-810F/H, MIL-HDBK-516A, 14 CFR Part 25, 14 CFR Part 26, CS-25, SOR/96-433 and MIL-STD-1546

Expert in Stress Analysis for advanced and conventional materials using advanced linear and non-linear FEA tools as well as strength of materials hand calculation with high proficiency in Static, Dynamics and Fatigue Failures analysis, DPHM technology and algorithm.

Knowledgeable as experienced with the design approval organization to TCCA(Transport Canada Civil Aviation), by Initiated different Service Difficulty Reports on Transport Canada website for different discrepancies affected aircrafts in service, followed by the closer of these Data adequately

PROFESSIONAL EXPERIENCE

KIAST (Korea Institute for Aircraft Safety Technology) S Korea (2019-2021), Airworthiness certificate for Civil Aircraft of in country (S Korea) as Public Institution Participated and Reported to PM, and established airworthiness certificate results as aircraft inspector on EC155B1 Helicopter

Worked engineering and technical review through document from applicant based on KAS (Referenced as FAA or EASA)

Report to Airworthiness authority and Participated in meeting between KIAST and Government Authority

Implemented to review part manufacturing for STC of aircraft IAW specification of requirement civil and military in fields

Accomplished Airworthiness Rule review for FAA, EASA, ICAO related regulation, Canada and BASA agreements P a g e 2

Accomplished Airworthiness required process of inspection and Quality of aircraft parts and components in field

Inspected on Vibration analysis and test set up and Noise measurement Technology and Practice

Trained and studied for FAA airworthiness certificate as TC, STC, RTC application

Studied and developed airworthiness certificate procedure that Military aircraft transfer to restricted civil aircraft exampled on FAA and DOD aircraft

Studied Aircraft structural Vibration, AVCS, Aircraft Noise, Acoustic analysis and related SW, ISO, Spec. Specoa Aerospace Corp. S Korea (2013-2014)

JOAP and Aircraft Maintenance as private company, Precision mechanical and electrical Instrument, PME Calibration Managed and Supported on Engineering and Technology on the task of JOAP (Joint Oil Analysis Program for Military and Commercial Industry in S Korea) and cooperated OEM (Spectro Scientific in Boston, USA) of ICP equipment for JOAP. Established maintenance program for Helicopter (BK-117) and fixed wing aircraft for government (CN-235)

Established JOAP Lab. Oil test using ICP equipment and data analysis based on US Air force regulation and in country military and industrial code

Studied Oil test program on Military and Commercial industry, Tank/Car, Ship, Automobile for preventive maintenance, higher growing the operational reliability

KAL (Korea Air Line) Research Institute, S Korea (2005-2013) Participated in KHP(Korea Helicopter Program)

Established Engineering and technology of RAMS, LSA/ILS, T & E (Test and evaluation) from phase of design development to test of flight

Developed on RAMS, SE (System Engineering) WBS (Work Breakdown Structures), SOW (Statement of Work)

SE set up and used “DOORS System” and “PLM System” for Document and Drawing Management, To get effective tracking for Design phase and Airworthiness Certificate process

RAMS (Design Phase_ NPRD95~2016, Winchill Data base, In Service_ Fields Data), and Reliability growth

Managed FOD and Sand impact test for Tail Rotor Blade (Composite CFRP Material Base) Trained and worked structural stress analysis through FEM/FEA using NASTRAN, managed drawing of CATIA V5 file and DOORS administration, PLM management for Drawing of Fatigue Critical Parts, Control SW development for KHP UAV(Unmanned Air Vehicle)

Participated and proposed that able to apply the development for RAMS, LSA/ILS, T & E at design phase

Reported and managed to customer as engineering and technical document of delivery for keep going operation and preventive maintenance, System MTBF, MTTR, MTBCF, FMECA, Operational Reliability KFX(Korea Fighter Program)

Participated that the Technical and Engineering Level is able to apply the development for Fighter Aircraft Design

(Nominated advisor for Defence Agency for Technology and Quality, 2009~2010)

Managed as a group leader for ORD(Operational Requirement Document, ADD, 2012)

Analysis on RAMS in design phase (KAI Project, 2016~2017) Falcon 2000S (Dassault System) Avionics Upgrade Program

Participated in this program on Proposal, Engineering Change and LSA/ILS, its documentation of Requirement Document, ADD, 2012)

P-3C Modernization Program

Participated in the modernization for avionics for Engineering change and LSA/ILS, its documentation as reports

(Project of ADD 2012)

Spar Aerospace Ltd, Albert, Canada (2004)

CC-130 Upgrade and Structural Repair analysis on QECU, Sloping Longeron Participated and Reported to engineering director, studied and analyzed of structural Integrity, Risk assessment on Structural repair of the CC-130 Canadian force aircraft

Studied structural integrity on QECU repaired as of Bushing Installation and evaluated Risk assessment

Reviewed multiple Damage Analysis and repair of Fuselage and Rainbow fitting of Wing

Reviewed Sloping Longeron repaired on corrosion in the aged structures P a g e 3

University of Toronto, Toronto, Canada (2001 – 2002) Polymer Material Foam Production and Property Analysis (QAA) Trained and studied for polymer foam through test Lab.

Reviewed and studied on the technology of foam for polymer and published paper.

Reviewed on the technology and industrial application of metal foam manufacturing

Reviewed and studied on the leadless soldering engineering and technology of electrical and electronics, and their certification, related industrial specification

Worked on Temperature control Equipment, SEM analysis of Ceramics Foam ROK AF officer Aircraft Maintenance Engineering/Technology, Materials Solutions, Logistics 1979 – 2001 Developed Depot maintenance and Logistics Engineering, Retired officer as air force Colonel Established as of Failure Analysis and Stress Analysis engineering, Manufacturing/Processing Quality Management Design and development for Aircraft Parts, installation and inspection, maintenance method with MIL-Spec. Report to general director, studied and developed of Fatigue and Failure Analysis as Maintenance officer and researched ASIP

(MIL-STD-1530D) at DME and ATRI (Aircraft Technology Research Institute, ROK AF, 1988~2001)

Worked and managed Depot Maintenance Engineer (TO-00-25-4, Aircraft Depot Maintenance, OVHL)

Managed MRO, MRB. Design and development on TCTO application and upgrade of Aircraft and Jet Engine,

Report to PM on the aircraft accident and incident failure of structural fatigue damage and malfunction of avionics

Report to PM in service aircraft on failure of fatigue damaged structure, component and malfunction of avionics Analyzed Fatigue fracture of structures (Magnifying glass with 5~30X, Beach mark of fracture surface with Microscopy), Striation (Microscopic crack growth on the fractured surface using SEM) to find out root cause

Managed of aircraft structural repair Upgrade/MRB for fighter aircraft, as F-5, F4, F-16, C-130 and Trainers

Managed of Depot Level Maintenance Technology as Landing Gear, CFRP repair material quality

Achieved of Aircraft Engine Depot Level Maintenance Technology as J85-GE-13, 21, J79-GE-15

Achieved of Aircraft Engine Depot Level Maintenance Technology as Gauges, Avionics

Developed the Technology as plasma welding, EDM, hard chromium plating, Painting, fiber composite repair

Worked Load Spectrum analysis on the modified part and component using strain gauge to the structures nominated Instructor of University and Avionics Job Training School, S Korea1983-1984 and 2010-2019 Kuk Je Avionics Training School (2017-2019)

Managed of 2 Year Course of Aircraft maintenance training programs of technical school to be authorized of government

Taught NDI technology and practices, Composite Materials, Strength of Materials (FBD, Beam Analysis), Aerodynamics static and dynamic loads, precision mechanical design steps of some standard W.T. models.

Taught and directed the course of Aerodynamics in technical School trainee to take exam for aircraft maintenance engineering Qualification of Governmental

Chung Nam National University (2010-2015)

Lectured on Defense Acquisition System in class of Graduate school of Peace and Safety

Taught Defense Acquisition System included as of Budgeting Planning, ORD ( Operational Requirement Documents), Developmental Phase for MS (Material Solution), MSA, TD/Prototype, E&M/DD, P&D and T & E ( Developmental Test and Operational Test) Environmental Test (MIL-STD-810F), TEMP (T & E Master Plan) for aircraft design, EMC Test as of MIL-STD-516A

Taught Defense Logistics System included as of Reliability theory, RAMS (Reliability, Availability, Maintainability and Safety), MTBF, MTBCF, MTTR, FMECA, FTA using E-BOM which calculated in Excel and applied to design system and parts, MIL-STD-217 for electronic parts, NPRD 95 data, Winchill Data application, Reliability application and development of AMSAA (US Army), RAM-c Analysis

Lectured on Reliability Analysis for Engineering Design in class of under graduate school of Dept. of Mechanical Design Engineering

P a g e 4

Taught of Failure Analysis theory and Statistical Approach as of Standard probability distribution function and others

Taught of Reliability engineering included as of Reliability Engineering Concept, Probability of Failure, introduction to Random variable for Statistical approach on failure data using Excel Sheet using Weibull failure density function, Life prediction theory and actual application, Failure Bath Tube Curve, Windchill data application, fatigue and fracture for RAMS analysis, SSIT (Stress and Strength Interference Theory for Reliability Analysis), PDF (Probability Density Function), CDF (Cumulative Distribution Function), PDF/CDF (Normal, Standard Normal, Exponential, Poisson, Log- Normal, Markov and Rayleigh etc.) of continuous random variables, MATLAB, R code, Practical application for engineering Analysis and design, Regression Analysis, Related software as of RELEX, Industry as of RAC Han Nam University, Dept. of Mechanical Engineering (2010-2016) Lectured in Mechanical Engineering Class in under graduate school

Taught of Strength of Material (Stress-Strain, Hooke’s Law, Mohr’s Circle, Euler Beam and Column, FBD, Plane stress/strain, Boundary Condition, 2nd Moment of Inertia, Strain Gauge Test of Hole, Material Standard Test as of Tensile Strength ASTM E8, Hardness, ASTM D 1474)

Taught of Mechanical Engineering element Design (Materials, Load, Stress, Deflection and Stiffness, Shaft and Component, Screw and Fastener, Clutch/Brake Coupling, Gear, Bearing, Piping, Welding, Spring, Fatigue Failure, reference as of Shigley, Mechanical Engineering Design) Lectured in Mechanical Engineering Class in graduate school

Taught of Applied Solid Mechanics (General Fatigue and Fracture Mechanics, S-N, e-N curve, Stress ratio R-effect, Stress Intensity Factor K, Plain Strain/Stress Fracture Toughness of Kc and KIc, Fatigue Crack Growth da/dN, and Testing method as ASTM E647)

Jung Won University, Dept. of Aircraft Maintenance Engineering (2015-2016) Lectured in Aircraft Maintenance Engineering Class in under graduate school

Taught of Avionic maintenance (General concept of electrical and electronics elements, electrical circuits, Bread Board experimental test, Law of Volt, Current, Resistance, reference of FAA maintenance training Guide Book)

Taught of Aero-control system including light aircraft control system, general control theory of Laplace Transform, Inverse Laplace Transform and analysis procedure, Aircraft production technology and Engineering, Aircraft NDI theory and principle with practice of Test (VT, MT, PT, ET, RT,UT from data of WWW.ASNT.ORG), FAA (AD A256 786, 1992) Air Bus NDI Manual, NDI Inspection Test practice (Dislocation, Fatigue crack detection and Analysis), Aircraft design engineering using computer (Auto CAD/CAM, CATIA general), Conceptual design of Aircraft, Composites Materials for Aircraft application, Mechanics of Aircraft structures

Taught of Airworthiness certificate on FAA, EASA as of U.S. Airworthiness Certificate to any applicant meeting the criteria established in FAA Order 8130.2, Airworthiness Certification of Aircraft and Related Products. Established in country (Korea Republic of) Airworthiness certificates based upon FAA and EASA Korea Transportation National University, Dept. of Mechanical and Maintenance engineering (2015-2017) Lectured on Mechanical and Maintenance Engineering Class

Taught of Avionic maintenance (General concept of electrical and electronics elements, electrical circuits, Bread Board experimental test, Law of Volt, Current, Resistance, reference of FAA maintenance training Guide Book)

Taught of Aero-control system including light aircraft control system, general control theory of Laplace Transform, Inverse Laplace Transform and analysis procedure, Aircraft production technology and Engineering, Aircraft NDI theory and principle with practice of Test (VT, MT, PT, ET, RT,UT from data of WWW.ASNT.ORG), FAA (AD A256 786, 1992) Air Bus NDI Manual, NDI Inspection Test practice (Dislocation, Fatigue crack detection and Analysis), Conceptual design of Aircraft, Composites Materials for Aircraft application, Mechanics of Aircraft structures KAFA(Korea Air Force Academy) Instructor, Dept. of Mechanical Engineering (1983-1984) Lectured and researched engineering and technology in Dept. of Mechanical Engineering

Taught of Strength of Material (Stress-Strain, Hooke’s Law, Mohr’s Circle, Euler Beam, Column, Buckling, FBD, Plane stress/strain, Boundary Condition, 2nd Moment of Inertia, Strain Gauge Test of Hole, Material Standard Test as of Tensile Strength ASTM E8, Hardness, ASTM D 1474, Buckling Test/Analysis) P a g e 5

Taught of Thermo Dynamics ( 1st Law, 2nd Law, Entropy, Carnot Cycle, T-S Diagram)

Taught of Mechanical Engineering element Design (Materials, Load, Stress, Deflection and Stiffness, Shaft and Component, Screw and Fastener, Clutch/Brake Coupling, Gear, Bearing, Piping, Welding, Spring, Fatigue Failure, reference as of Shigley,. Mechanical Engineering Design)

Taught of Composites Material (General Concept, Particulate, fiber, Matrix, Laminate, Isotropic, Anisotropic, Structural component, Manufacturing methods, Mechanical Testing)

Taught of Jet Engine (Military jet Engine General, Compressor, Ignition Chamber, Turbine, Nozzle, After Burner for J85- GE-13 engine, T-S Diagram Analysis, Thrust, efficiency)

Taught of Metallurgical material (General engineer material, polymer, ceramic, Chemical Chart, metal, nonmetal, Steel, Aluminum, practical material for Aircraft Structure and engine, Heat Treatment principal and practice, phase diagram, microscopic analysis of phase diagram as of austenite, pearlite, ferrite, bainite, martensite etc

Taught of Fatigue and Fracture Mechanics (General material of fatigue/fracture mechanics, S-N, e-N curve, Stress Intensity Factor K, Plain Strain/Stress Fracture Toughness of KIC, Fatigue Crack Growth da/dN, and Testing method)

Managed mechanical engineering test Lab, which included as of Heat Treatment, Fatigue Test, Tensile Test, Hardness Test, Vibration Test, Fluid test, Stress-Strain gauge test) Projects of government authorities and commercial Industry 1) Military aircraft flight safety and Airworthiness certificate analysis and road map (Oct.2021, DAPA) 2) A Study on Standardization of Civil-Military Drone (Oct.2021, ICMCT) 3) Acquisition evaluation index for Business through AHP method (Oct. 2021, DAPA) 4) Evaluation Index Study for future challenge project (Dec. 2021, ADD) 5) RAMS System Development on Weapon System (Oct. 2020, 21C Research Institute on DAPA) 6) Snow removal method and equipment for Airport (Dec. 2018, ROKAF) 7) New Military air base construction feasibility Study (May 2017, SJ City of County) 8) KFX-FRB AESA radar test and Evaluation (May 2016, ADD) 9) Optimized Life evaluation of TACAN and RAPCON for Air Base (Oct. 2015, ROK AF) 10) Conceptual study on RAM evaluation base Design (2012, CNU LSRI) 11) Resignated system on Organization of test for Military Industrial engineering (2012, CNU LSRI) 12) Expert activity methodology on using commercial engineering and technology (2012,CNU LSRI) 13) Developmental Study of Test and Evaluation System of ROK AF (2011, CNU,Logistics System Research Institute) 14) Reinforced Method of Interoprerability on major parts through Standization Activity (2011, CNU LSRI) 15) ILS acquision and after service on Small Special Battle Ship Break in Battle Fields (2011, CNU LSRI) 16) Application methodlogy TLCSM (Total Life Cycle System Management) from Acquision phase (2011, CNU LSRI) 17) On Mid and Long Term of Avionics Maintenance Markets (2010, CNU LSRI, Logistics System Research Institute) Papers published

1) A Significant Review on QC and continued Airworthiness process of Civil-Military aircraft (AEI of KAEA, Jan. 2022) 2) Reliability analysis on fatigue Strength for Certification of Aircraft Composite Structures (Journal of Aerospace System Engineering Vol.15, No.2, pp.16-25 (2021)

3) Review and Recommendation of Airworthiness process of Civil-Military Algorithm. (AEI of KAEA, Oct. 2021) 4) Military technology and Industrial development (Military daily newspaper, Nov. 2021) 5) A Study on the Certification Method for the Application of Composite Material of eVTOL Aircraft (J of KSAS, 2020) 6) Effort of Scientist for finding and application on induced electromotive force (AEI of KAEA, April. 2018) 7) Study on Optimal Establishment for Spare Engines by Applying Weibull’s Distribution with the NHPP Model (J of KSME, April, 2018)

8) A Study on PBC (Performance Based Cost) Analysis Model for UAV (unmanned air vehicle) Development UAV’s Developing Cost Structures at the Material Solution Phase (J of AMSOK, Dec. 2017) 9) A Study on RAMS application to Weaopn System (ROK AF, Nov. 2016) 10) Evaluation on Reproduction and Reliability of Military industry (KSME, 2015) 11) Review on ASIP (Aircraft Structural Integrity Program) for Military aircraft (Technology Information of DAPA, OCT. 2010) 12) A Study on Application of Test & Evaluation Technology for Aircraft Structures (J of KADIS, Jun.2008) P a g e 6

13) Forcasting on Development of ASIP system of Military Aircraft (ATRI, 2007) 14) Review on Method of Life Management of Military Aircraft(ATRI, 2007) 15) On Method of T&E (Test and Evaluation) of Weapon System (ATRI, 2007) 16) Risk Assessment for safety management of Aircraft Structures (ATRI, 2007) 17) Composites materials application methods for KHP (ADD, Agency for Defence and Development, 2006) 18) On metnod of DaDTA (Durability and Damage Tolerance Analysis) for Composites Materials (Agency for Defence and Development, 2006)

19) Tailboom and Tail Rotor development of KHP (ADD, 2005) 20) Pre-Study on ASIP application to KHP (Agency of Defence and Development, 2005) 21) A study on effect of Residual stresses around Cold working Hole of the aircraft structure (Journal of the Korea Institute of Military Science and Technology: Jun.1999)

22) Aircraft NDI technology on Design Study (ADD, AFA RI, 1998) 23) On Study of Helicopter ASIP (Aircraft Structural Integrity Program) and Service Life Management (ATRI AF, 1995) 24) Development of Manufacturing methodology and Protype production of F-5 LG Strut Housing (ATRI AF, 1992) 25) On Study of Aircraft structure damage effected by Surface Roughness of Runway (ATRI AF, 1991) 26) TLCSM (Total Life Cycle System Management) study on Aged Aircraft of Air Firce (ATRI AF, 1991-1998) Personal study for lectures and task

1) Reviewed on Reliability evaluation and application to Airworthiness of DOT/FAA during 1970~2021 (KIAST, 2021) 2) Reviewed on Reliability evaluation and application to Airworthinedd of DOT/FAA during 1975~2018 (KIASTI, 2021) 3) Reviewed on FDTA (Fatigue Damage Tolerance Analysis) to Airworthiness of DOT/FAA 14 CFR25.571 and Air Force aircraft MIL-STD-1530D, DPHM (Diagnostic, Prognostic, Health Monitoring Tech) during 1980~ 2018 (KIAST, 2021) 4) Trained on SolidWorks Application Design and Analysis (Solko Agency in S Korea, 2021) 5) Trained on Coding of Pathon Language for AI (Artificial Intelligence) (IZEN IT, 2021) 6) Reviewed and Studied of Airworthiness process of Civil-Military Algorithm. (AEI of KAEA, Oct. 2021) 7) Published on Military technology and Industrial development (Military daily newspaper, Nov. 2021) 8) Studied on Detection methodolg of FOD in Runaway surface ( 2020) 9) Reveived on Vibration reduice method of Helicopter, AVCS (Antivibration Control System) (KIAST, 2019) 10) Reviewed and Presentation on Airworthiness Process and Engineering of ROK (KIAST, 2019) 11) Reviewed on Airworthiness of FAA/EASA (KIAST, 2019) 12) Published on Practice and Test of Avionics Lab (KNYU, 2017) 13) Studied on CFD (Computational Fulid Dynamics) of Military aircraft Using ANSYS Fluent (KNTU ATRI, 2015) 14) Studied on Airworthiness Information System Development (KNTU, 2015) 15) Studied on FEM, Patran in Windows and NASTRAN stress analysis, LS-Dyna for expolosion (KNTU, 2015~2017) 16) Studied R – code application (KNTU, 2015)

17) Published on ASIP of Aircraft (ROK AF, ATRI, 1998) EDUCATION & PROFESSIONAL DEVELOPMENT

Airworthiness for Military Aircraft DAPA (Defense Acquisition Program Administration), S Korea, 2021 Continued training on Military aircraft airworthiness and keeping the certificates Airworthiness for Civil Aircraft KIAST (Korea Institute for Aircraft Safety Technology), S Korea, (2019~2021) Continued training on Civil Aircraft airworthiness and keeping the certificates SW Coding for AI (Python) ITC (Institute for Python Coding Training) S Korea, 2021 Python Language Coding practice for AI

Airworthiness for Helicopter KARI (Korea Aerospace Research Institute), S Korea, 2004 Airworthiness Certificate engineering and Technology for Helicopter, Design Engineering, Structure and Strength, Aerodynamics Damage Tolerance Analysis SWRI (Southwest Research Institute), TX, San Antonio, USA, 1993 Fatigue Crack Growth testing, Flight Data acquisition and Load analysis, Stress Spectrum Analysis, Fatigue Crack growth analysis, Inspection Interval, Fracture Mechanics Parameter (Stress Intensity K analysis, Crack Growth Test practice (Slow growth, Retardation), NDI training, under USA Aerospace P a g e 7

industry and Military Spec.(MIL-STD-1530), Studied AFGROW and NASGRO algorithm Ph.D. in Mechanical Engineering Yonsei University Graduate School, Seoul, Korea, (1985~1992) Stability of Structures, Statistics Thermodynamics, Perturbation Methods, Advanced Dynamics, Kinetic Theory of Gas, Theory of plasticity, Fracture Mechanics, System Design, Structural Vibration(FEM, GW-Basic Coding), Spec Topic in mechanical behavior of materials(Acoustic Emission to Deformation and Fracture as wear, welding), Non-linear Fracture Mechanics, Spec Topic Non-Linear Fracture Mechanics, Spec Topic in Fatigue Mechanics, Creep Behavior

MS in Mechanical Engineering Yonsei University Graduate School, Seoul, Korea, (1981~1983) Theory of machining process, In-viscid flow theory, Applied Fracture Mechanics, Convective Heat Transfer, Introduction to Continuum Mechanics, Viscous Fluid Dynamics, Deformation & Mechanical Behavior of Materials, Applied Numerical Analysis(FEM,FDM, FOTRAN Coding in DOS), Theory of Plates, Mechanics od Composite Materials, Advanced continuum Mechanics BS in Mechanical Engineering Air Force Academy, Seoul, Korea, (1975~1979) Calculus, General Physics, General Physics Lab. General Chemistry, General Chemistry Lab. Introduction to Philosophy, Introduction to Economics, Aeronautics and Astronautics, Computer Programming(FORTRAN Coding), Introduction to Psychology, Difference Equation, Engineering Drawing, Engineering Mathematics, Modern Physics, Engineering Thermodynamics, Introduction to Electronics Engineering, Management Science, Dynamics, Engineering Materials, Engineering Mechanics, Engineering Mathematics, Introduction to Geography, Weapon System, Introduction to Flight Dynamics, Strength of Materials, Material Science, Fluid Mechanics, Inter Combustion Engines, Mechanical Engineering Lab. Meteorology, Machine Element Design, Manufacturing Processes and Practices, Gas Dynamics, Heat Transfer, Metallic Materials, Jet Engine, Air Conditioning, Introduction to Flight Dynamics, Rocket Engineering, Automatic Control, Mechanical Vibration

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