David Joseph Schroepfer 1 of 3
33021 Sunset Drive, Trinidad, CO 81082 Permanent
311 Ellwood Beach Drive consultant, Goleta, CA 93117 Consulting
(719) 680-2113 cell BSME 2004 Warren University, WY (KW)
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SUMMARY
Extensive experience in product mechanisms, control instruments, and production. Proficient in engineering management and Third Party integration. A clear and concise skilled communicator with proven ability to cure product issues. Have Strong work ethics and team player mentality with a commitment to achieve short and long-range company objectives. Field, shop and home office management experience.
PROFESSIONAL EXPERIENCE
Project Engineer to Engineering Manager: Overseas, HI, & CA to Trinidad, CO 1980 - Present
Military facilities, Space, Aerospace and Commercial Companies to engineering contracts. Turned R&D concepts into customer spec driven layouts, CAD models, assemblies, and drawings for engineering reviews to achieve tolerance stacks and vendor quotes. Responsible for various CAD programs, new machining and test practices. Cost effective management with budget approvals for operating expenses. Meet milestones for pay. Mentor young engineers.
Engineering Manager: Spruce Consulting - Trinidad, CO 1995 - Present
Consulting firm specializing in contract engineering for systems and components. Modern CAD used and outsourced CFD, FEM, FEA etc. Drawings, R&D parts, first articles, and all testing. Purchased and maintained office equipment, CAD, R&D shop, licenses, insurances and all contracts with third party, vendors and test labs. Trade studies for cost, capital equipment purchases, refinancing and corporate restructuring. Supervised or coordinated the efforts with client companies from 3-4 to 30-40. Yearly cost budgets for engineering, production, vendors and administration. Produced Project schedules, Gant charts, and manpower loading when required.
½ yr - Northrop Grumman – Volt/Kollabra Agency – Satellite Testing Goleta, CA
6/18 Satellite Photovoltaic solar arrays. Spacecraft electrical generation Testing. CREO and Windchill EPDM. Test
10/18 fixtures, harnesses, cables, feedback loops for most built spacecraft. Manage first builds before they start pressure and thermal chambers. Created new ways to establish test ranges.
1 yr - Parker Control Systems – Flight Control – USAF Aircraft Irvine, CA
9/17 Electro-mechanical actuator updates for USAF fighters and Tankers. EHSV secondary nozzle locking for high
4/18 pressure spray Null used on the F-15. New 25 year “kit” for USAF Stratotanker to allow Global service, new bearing staking concept to stop replacing expensive feedback linkages and allowing re-using or replacing the bearings. Tight tolerance hysteresis is affected by bearing wear. F-50 Linear Displacement servo LVDT spacial claims. Worked with shop assembly, testing, and management to meet milestones. CATIA CAD, Enovia PDM.
4 yr - Lockheed Space Systems – Secret Satellites and GPS – USAF/NASA Littleton, CO
9/13 MSP Block III Bus & ORION manned spacecraft. Final Signature on releasing Data Sets from all groups, this
8/17 includes Thermal, Heat Shields, Printed Circuit Boards, Schematics, Structures, Ordinance, Cables, Harnesses, Testing both MAGE Ground Support. Vehicle, composites using Fibersim, Circuitry and BOMs using Zuken.
Released 2600 Data Sets on the ORION before initial successful launch in December. CREO / Windchill EPDM.
4 yr - Rainaid/Drip Irrigation – Water Delivery – Commercial & Metropolitan Las Vegas, NV
1/96 Supervised the designs and fabrication of production automation drives, tank tables and coilers for poly pipe
7/17 extrusion. Die cast models for production and UV cured bonds. Designed and fabricated vacuum tank
chillers to control OD size of pipe along with a new plastic extruder screw. Designed and detailed production equipment used to produce millions of feet of poly pipe per year. Used Gast for Vacuum pumps and Boston gears. Many linkages and manipulators to handle the coiling and banding of the product. Clever reversing drive unit for varied driven wheels set ups. Solid state digital drive units engineered for accurate belt pullers FPM speeds. Designed and built test fixtures for high pressure and frequency response life cycling validation. MSHA certification. Systematically achieved hierarchy priorities for company profit targets. Independently ran the entire engineering efforts for production equipment and product improvement developments. FDA, DOE, DOT, SAE, ANSI, ULA etc.
Schroepfer 2 of 3
½ yr - Cummins – High HP Auxilliary Engines – Foreign & Domestic Clovis, NM
10/00 Direct and contract. Divisional Field Service Engineer for 20% of company sales, this includes high HP
2/13 engines both diesel and natural gas. Australia, Micronesia and the Pacific Rim. Obtained MSHA certification
and was approved to operate sensitive customer links to Injector Codes. Modeled high horsepower engines for conversion of old paper drawings to CAD. Did the blocks, heads, and rockers with the associated Turbines for intake and exhaust.
4 yr - Stanford Mu Corp – Space Regulators – NASA Harbor City, CA
2/04 Lead design reviews with Lockheed for the awarded Orion CEV oxygen system regulator which I designed. 3/11 Developed a new regulator which I designed. Developed a new Latch Valve for GlobalStar, the European
GPS system (EAS). Managed the engineering on several direct and two stage regulators for Boeing Hydrazine propulsion systems. Worked directly with Aerojet on valve and regulator designs for liquid and solid propulsion. Ultrasonic, Laser and electron beam welding sub-assemblies for volatile propulsion sealed wet areas. Represented products at PDRs and CDRs on all programs. Directed design on a new Falcon HTV-2 two stage regulator, an ARES I RCS isolation valve, and an RCS plug-in Aerojet retro module for the ARES I propulsion system. Invented a new Helium pressure regulation module for the first stage CEV roll control system for NASA Marshall Space Center ER33 & J2-X. Wrote test procedures when necessary for Wyle Labs and National Labs and interfaced directly with machined parts vendors. ProE and SolidWorks used for all products, test fixtures and assembly fixtures for life cycle validations. DOD, DOE, FDA, FAA, ESA.
3 yr - Lockheed Space Systems – Secret Satellites and GPS – USAF/JPL-NASA Pasadena, CA
2/01 Lead Integration Engineer on an Air Force secret satellite. Interfaced with 30-40 engineers using DOORS for
7/10 optics, laser bench, photonics, metrology, composites, hexapods, focus actuators, alignment. Derived a compressed schedule for assembly and transportation from high bays to vacuum chamber. Evaluated new magneto-strictive actuators in clean room. Designed and modeled RF waveguides for the Lockheed Jupiter satellite using SolidWorks. Finished a high gain antenna (parabolic dish) and structure for an overdue Ames and Glenn NASA program. Supervised ATK on composite mechani...
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