I was program technical director (technical lead/responsible/systems engineer) for flexible blanket Roll Out Solar Array (ROSA) for commercial GEO communications satellite.

Structural analysis and dynamic test of the Roll Out Solar Array (ROSA) for the JHU/APL DART spacecraft for NASA. Full program support from SRR thru launch including stowed and deployed analysis, dynamics, sub-assembly dynamic testing (sine, random), flight composite design and procurement oversight, composite materials allowable definition and testing, deployed and stowed end-item testing (thermal, static, sine, random vibration).Structural analysis of Roll-Out Solar Array (ROSA) for commercial GEO communications spacecraft. Stowed and deployed modeling and analysis and end-item test execution.

I was a lead engineer and a senior technical resource supporting the antenna department. During my time our team worked through the development and end-item test of 30+ deployable antenna reflectors for multiple commercial communication satellite customer missions (EUTELSAT 65WA, JCSAT-15/16, Star One-D1, BRIsat, MELCO QZSS, Intelsat-36, Intelsat-38, EcoStar-23, EUTELSAT E7c, Telkom 4, Telstar 18/19V, etc.)Most recently I was the lead analyst for the KaRIn central metering structure; a precision thermally/hygroscopically stable composite assembly for JPL as part of the primary instrument for the SWOT spacecraft for NASA/CNES. I gave the analysis presentations for this hardware to the JPL technical review board at the SWOT Primary Structure PDR and CDR.

Formerly Orbital ATK/ATK Space Systems/Composite Optics, Inc. (COI).I was test engineer for the first article static test of JPLs Low Density Supersonic Decelerator (LDSD) Core Structure Assembly (5 meter diameter re-entry vehicle primary structure)Responibilities Included:Test fixture design, analysis, and manufactureStatic test planning with project teamAuthored test procedure and test rediness review packageOral presentation for JPL Technical Review BoardStatic test execution (50k lb load levels)

Formerly Orbital ATK/ATK Space Systems/Composite Optics, Inc. (COI).Over 10 years I had the opportunity to learn the skills required for structural analysis and test of distortion critical lightweight composite structures for space based optical and RF systems, including optical benches, mirror support structures, reflectors, and radomes. I greatly benefitted from working under some of the best composite material analysts in the industry.Skills include static, modal, acoustic, sine/random vibration, and thermal distortion analysis using classical and finite element methodologies (NASTRAN/FEMAP/Hypermesh). Bonded joint analysis via Volkersen/Hart-Smith closed-from equations and FE methods. Classical lamination theory codes. Ply-by-ply strain and max stress failure criterias. Preloaded fastener analysis per NASA-STD-5020. Bolted/pinned joints. Metallic fracture analysis via NASGRO. Kinematic mounting design for optical components. Static, acoustic, vibration, and thermal test oversight and instrumentation definition. Laminate/bonded joint coupon testing per ASTM standards and B-Basis allowable creation. Dynamic test model correlation.Technical presentations given for Aerospace Corporation, JPL, Sandia National Laboratory, Northrop Grumman, NAVAIR, Ball Aerospace, Mitsubishi Electric, Space Systems/Loral, Goodrich, Smithsonian Astrophysical Observatory, etc.Contributed to projects including:Large orbital space telescope primary mirror support structure and fold mirror optical benchesMultiple thermal/hygroscopic stable composite structures and optical benches for government, commercial, and civil customersDual shell gridded sandwich and isogrid membrane satellite antenna reflectorsNASA James Webb Space Telescope primary mirror support structure (PMBSS Center Section, Wings, and BSF)JPL Low Density Supersonic Decelerator Core Structure Assembly (LDSD)JPL OSTM/Jason-2 microwave altimeterNGC Global Hawk RQ-4B CDL radomeNGC Firescout MQ-8B nosecone radome

Formerly Orbital ATK/ATK Space Systems/Composite Optics, Inc. (COI).For a year I had the opportunity to work as a manufacturing engineer gaining shop floor/hands-on experience and skills including:GD&T and drawing interpretationPre-preg specification and procurementPly scheduling and bleeder calculationsCylindrical PDMO sizingMonolithic graphite mold machiningComposite layup and assembly work instructionsMetallic fitting machining and procurementMetallic heat treatmentAssembly fixture designThermal vacuum, acoustic, sine, random vibration, and test supportCMM and traditional dimensional inspectionExperience with material systems including:M55J/M60J/YSH-50/YSH-70/K13D2U/cyanate ester uni and fabric prepreg/laminatesKevlar 49/cyanate ester prepreg/laminatesHysol EA 9394 and other paste adhesivesCytec FM-300, AF-191 and other film adhesivesBR-127 primerKevlar, Nomex, aluminum, and closed cell sandwich panel coresMetallic alloys including, titanium 6Al4V, Invar 36, 6000/7000 series Aluminums, stainless, etc.Projects:Telescope baffle/metering structure for NASA IRIS spacecraftDual shell gridded reflector for the Space Systems/Loral SATMEX-8 satelliteDynamic testing of the JPL JUNO high gain antenna reflector currently orbiting Jupiter