Stress Engineer, Structural Stress Analyst/Engineer

TOAN VAN Cell Phones: 714-***-****

Wichita, KS **212 E-Mail : *********@*****.***

Structural/Aerospace Stress Engineer with an Active Secret Clearance

SKILL SUM. Over 35 years of aircraft/spacecraft structural analysis experience acquired in both classical and numerical methods for both metal and composite structures. Tools used for analytical tasks include VISION/SLIM/IDAT/IMAT, PATRAN, NASTRAN, FEMAP, ABAQUS, FEADMS, EXCEL, MATLAB, CATIA V5, FLAGRO, AFGROW, IDTAS, CSW, ELAM and various laminate analysis codes for composite materials.

EDUCATION B.S.M.E. University of Southern California (USC), May 1985.

Completed all required credits toward M.S.M.E. (CSULB, 1992) with emphasis in Engineering Structural Mechanics and Finite Element Analysis.

Completed more than 10 advanced engineering courses, UCI and UCLA Extension Programs

EXPERIENCE Bombardier Learjet Company, Wichita, KS (Contract Engineer) 05/2023 – Present

- Perform structural analyses of airframe primary structures, antenna support structures, composite WTBF with missionized Challenger & Global jets utilizing in-house-developed excel tools, classical hand analyses. Extract CATIA V5 model, generate DFEM and perform NASTRAN analysis. Write structural substantiation reports.

Lockheed Martin Company, Palmdale, California (Contract Engineer) 06/2022 – 02/2023

- Performed structural analyses (static, fatigue, random vib.) to support a classified program

Northrop Grumman Company, Roy, Utah – Sr. Principal Engineer 08/2021 – 06/2022

- Performed structural analyses of Missile Support Systems and interfaces using classical methods, NGTools, and FEM to validate structural design of LGM-35A Program (GBSD).

Lockheed Martin Company, Palmdale, California (Contract Engineer) 01/2019 – 12/2020

- Performed structural analyses of X-59 experimental supersonic aircraft primary & secondary structures and subsystems using classical methods, inhouse-built tools, and FEM to validate structural design and drawing release. Also performed analysis of loaded structures in support of full airframe proof and calibration tests.

BOEING Company, Oklahoma City, Oklahoma 11/2017 – 12/2018

- Performed durability and damage tolerance analyses for B1-B Bomber wing and fuselage structures in support of FSFT (Full Scale Fatigue Test) to obtain certification for extending the service life of current fleet.

- Provided technical supports (crack correlation, structural repair approaches, DT analysis, and inspection intervals) to ensure aircrafts return to service as scheduled.

UTC Aerospace Systems (UTAS), Chula Vista 07/2016 – 07/2017

- Supported A-350 Airbus after-market program by a) substantiating structural analyses on the composite and metallic components of nacelle structures; b) generating certification reports in compliance with FAR/EASA (European Aviation Safety Agent Regulations).

BOEING Company, Huntington Beach, California 09/2013 – 12/2015

- Performed ultimate strength and fracture analyses of primary and secondary structures of the crew capsule for NASA CST-100 Starliner Program.

ANCRA International LLC, Azusa, California 03/2013 – 09/2013

- Performed stress analysis of on-board cargo handling and restraint systems (installed on Boeing and Airbus aircrafts). Also prepared structural substantiation documents.

BOEING Company, Huntington Beach, California 05/2012 – 12/2012

- Performed strength and vibration analyses of equipment/system support structures installed to front spar Section 11, Ram Air Turbine support structures in Section 46 of 787-9 using closed-form, CSW and NASTRAN.

UTC Aerospace Systems (UTAS), Chula Vista, CA 06/2011 – 12/2011

- Performed strength and fatigue analyses of Nacelle Thrust Reverser structures for Airbus A-350 weight reduction and certification.

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BOEING Company, California Principal Engineer

* Commercial Aviation Services – LB, CA & Everett, WA 09/2006 – 01/2010

- Performed ultimate strength and fatigue analyses of joint structures at station 1137 frame in support of 787-8 Section 11.

- Performed composite panels sizing for the 787-8 wing-to-fuselage aft fairings.

- Performed ultimate and failsafe strength analysis of the 747-8 horizontal stabilizer (HS) and its side-of-body joints for both freighter and intercontinental -8 versions.

* C-17 – Long Beach, CA 02/2006 – 08/2006

- Performed strength analysis to support the C-17 OBIGGS (On-Board Inert Gas Generation System) Retrofit/Redesign Task.

* C-130 AMP (Avionic Modernization Program) – LB, CA 11/2001 – 01/2006

- Performed strength and durability analyses of structures to support drawing release, also supported MRB activities in resolving manufacturing tags/discrepancies by providing recommendations for repairs and disposition of parts or installations.

* X-37 Reusable Launch Vehicle – Seal Beach, CA 01/2000 – 10/2001

-Performed trade studies and strength analysis of X-37 structures using both classical and NASTRAN- PATRAN analysis.

* International Space Station (ISS), Lead Engineer – HB, CA 7/1996 – 1/2000

- Performed strength and random vibration analyses of Active Thermal Control Systems (ATCS) in support of qualification and acceptance tests.

- Performed strength analysis, crack growth, safe-live, and damage tolerance analyses of the S1/P1 primary structures using NASA FLAGRO code in support of drawing release. Also performed subsystem analysis such as racks, tubes, hardness, and orbital replaceable units.

ROCKWELL International, North American Aircraft, CA 8/88 - 7/96

* B-1B Aircraft: 7/95 - 7/96

- Performed stress, durability, and damage tolerance analyses of the horizontal stabilizer (HS) in support of repair task. Also conducted repair verification tests.

* X-31 Enhanced Fighter Maneuverability - Flight Test Program 3/91 - 6/95

- Supported X-31 aircraft structural integrity assessment for load envelope expansions, tactical, and close-in-combat flight test at NASA Ames-Dryden Flight Research Facility by safety monitoring of critical strain gages and performing post flight data reduction.

- Performed internal load and stress analyses for all structural design changes, repairs, and installations to the aircrafts to ensure flight safety.

* X-30 National AeroSpace Plane (NASP, Hypersonic AC) – Downey, CA 5/89 - 2/91

- Performed strength analysis for forward fuselage structures, thermal stress analysis of Active Cooled Advanced Carbon-Carbon Panels.

* F16XL Laminar Flow Control Aircraft – LA, CA 8/88 - 4/89

(Drag reduction & fuel saving technologies)

- Performed trade study of different design concepts for evaluation and selection of wing-glove structures, then performed load and stress analyses for the selected structures.

AMETEK, Composite Materials and Applications Division 7/86-8/88

- Performed structural analysis and design development of the Strategic Defense Initiative (SDI) advanced spacecrafts utilizing NASTRAN models in assessment of spacecraft performance and survivability with various advanced material combinations.

- Developed NASTRAN FEM model of Geosynchronous Surveillance Spacecraft (GSS); performed nonlinear steady state and transient thermal analyses of the spacecraft.

- Developed FORTRAN computer code for transient thermal analysis of SDI materials exposed to a laser radiation source.

CRYPTOCOM Corporation, Long Beach, CA 5/85 - 7/86

- Responsibilities included designing, performing stress analysis, supporting product manufacturing and testing of data-encryption modem products.

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