Nathan P. Email & Phone Number

Hyrum, Ut, Us

Hyrum, Ut, Us

Saint Augustine, Fl, Us

Currently providing structural repair design and assessments and other related technical support to United States Navy (USN) leadership for their F-5 aircraft aggressor squadron. The USN's F-5 fleet performs an essential role in providing adversary training to F/A-18 aircraft aviators.Primary responsibilities and projects include the following: o Perform research and evaluations of various topics ranging from fleet maintenance activity planning, structural integrity-related risk evaluations, to proactively identify and mitigate risks to safety of flight and, in some cases, reduce costs associated with unnecessary inspections and premature replacement intervals;o Summarize research findings in formal reports; o Assess proposed fleet management strategies such as service life extensions or inspection interval changes and identify potential risks these changes may have on the structural integrity of the affected aircraft; o Review past/current fleet in-service finding reports (e.g., maintenance induced damage, fatigue cracks, corrosion, and/or other) and perform stress analysis and durability/damage tolerance analyses to assess whether prescribed component service lives, removal and replace times, and/or inspection intervals are appropriate;o Facilitate cross-service collaboration with the USAF’s F-5 PATCG/T-38 SPO and the Naval Air Warfare Center Aircraft Division with the goal of identifying structural commonalities and applicable “lessons learned”; o Provide technical support for Technical Directives issued by NAVAIR; o Provide advisory assistance and industry expertise on matters related to fleet management using ASIP methods as defined in MIL-STD-1530D;o Review contractor repair and analysis for nonconformance-related issues discovered during depot maintenance to proactively identify and mitigate risks to safety of flight; o And perform analyses of nonconformance repair actions discovered during routine maintenance actions at the contractor facility.

Bethesda, Md, Us

Skunkworks/F-35 Design and Analysis:B&S

Reason for Resignation: Given a great opportunity to work for Lockheed Martin's F-35 program, so decided to return to the aerospace sector.Created UNVC’s lean principles-based Cx workflow forecasting and issue mitigation process tool from the ground up. The bedrock of this tool comes from the analysis of thousands (7,500+) of Issue-Log data points of over 90 commissioned projects UNVC has done in the past 5-years in the commercial, governmental, educational, healthcare, and military industries. By continually updating and incorporating data, trends, and statistics from past and ongoing projects into this end-to-end, design concept-to-post-occupancy verification process structure, UNVC is uniquely positioning itself as the first data-driven commissioning service provider. This unique commissioning approach is smart in that it applies lessons learned from real-world construction data to ensure UNVC’s clients gain the maximum benefits from these past projects without having to pay the extra costs of time, money, and safety the data comes from. This program gives smart buildings a soul.

Randolph Afb, Tx, Us

Reason for resignation: After 10-plus years of civilian service with the United States Air Force (USAF) and returning to the same groups twice, each, decided to pursue career opportunities outside the USAF, setting sights on career opportunities with companies that have robust accounting practices and fault-free employee pay practices.- Primary responsibility was to ensure flight safety and aircraft availability by anticipating and responding to technical issues for the propulsion system and other mechanical systems.- Was responsible for developing a working knowledge of the propulsion J85-5 turbojet engine for theUSAF’s supersonic T-38 aircraft to provide engineering guidance and solutions to address ongoingmaintenance, sustainment, and operations-related activities.- Participated in engine Integrated Product Team (IPT) bi-weekly meetings which addressed supply, sustainment, and maintenance issues.- Researched historical and on-going stall mitigation methods and kept stall event tracking log for USAF’s T-38 fleet.- Responded to time-sensitive waivers that requested deviations from established engine trim checkout procedures.- Performed base visits to discuss potential process improvements or concerns with local management and maintenance personnel.

Falls Church, Va, Us

Reason for resignation: Had two short stints with this group. The reason for resignation from the first stint was to return to the Air Force where job security and benefits were more stable than what was experienced with NGC. My second stint (3-weeks) with this group was on a very promising career trajectory. Unfortunately, certain unforeseen circumstances led to making the choice of resigning. Had things been different, would have loved to have stayed with this impressive group of rocket scientists/engineers.- Acted as a D&A structural analyst for composite case rocket motors.o Groomed to provide Material Review Board (MRB) analytical design and analysis support for Graphite Epoxy Motor (GEM) 63/XL (strap-on booster for the Atlas V and other commercial, core vehicles like ULA's Vulcan).o Responded to manufacturing incident of impact damage to composite case from an overhead crane. Provided engineering direction to mitigate potential flight-related structural concerns via ultrasonic inspection and visual examination of area.o Provided next-day rapid response to on-pad discrepancy reported by customer. Situation required a "one-out" bolt analysis of the forward attach thermal protection plate panel.

Randolph Afb, Tx, Us

Reason for resignation: Opportunity to return to NGC.-Analyzed bolted splice repair of primary fuselage structure (inboard lwr longeron) under worst-case tension, compression, and torsion ultimate loads. Built 3-D, parts-separated model of joint using NX software. Modeled contacts between parts. Performed mesh density study (~10-million d.o.f.). Assessed margins for failure modes (crippling, net-section tension/compression, local failure, etc). Summarized analysis and findings in formal report for reference by field personnel and management.- Performed DTA using AFGROW on fatigue critical structures to give inspection intervals.- Built custom, Excel-based cost and labor estimation tool (aka Mx Action M8) in less than a week to respond to contractor request for info not readily available. Contractor hired to perform a Maintenance (Mx) phase interval optimization on the T-38's inspection WCs. Tool included option to select a Damage Severity Index (DSI) value from 0 to 7 for each inspection. By increasing the DSI value, the program identified and quantified specific Mx actions, labor hours, and resources required for that specific inspection on the mechanical system or structural location of interest. Program got high praise from the Mech. Systems Chief and Integrity Program Lead Engineer.- ASIP Manager: Provide structural integrity program guidance for F-5 aircraft users. Working with team of engineers to help military commands (foreign and domestic) implement actions prescribed in MIL-HDBK-1530D to ensure the structural integrity of fleet. Independently searched, compiled, and analyzed over four hundred separate reports of structures-related issues (e.g., fatigue cracks, corrosion, et damage) to determine current structural health of F-5 fleet.- Addressed various discrepancies on primary structures on the T-38 aircraft using classical hand calculations and FEA methods. Prepared summary reports to show computed margins of safety for proposed repair dispositions.

Falls Church, Va, Us

Reason for resignation: Had two short stints with this group. The reason for resignation from this first stint was to return to the Air Force where job security and benefits were more stable than what was experienced with NGC.- Built full, 3D FE model of the aft composite case segment of the OmegA rocket motor (CBS-1200), NGIS's proposed evolved expendable launch vehicle intended to compete for contracts with the USAF to give the government a more affordable and reliable means of launching military satellites into space. Details of the model included a ply-by-ply composite material with orientation definition of the case structure, attach hardware assignment and interface/contact definition, bolt and thrust take-out pin preload, and other related details. Ultimate end-use of the model was to calculate margins for each primary structure against interlaminar shear and tension, yield, bearing, etc, and predict overall vehicle displacements and response for pressurized case qualification testing and vehicle certification.- Provided analytical design and analysis support for Graphite Epoxy Motor (GEM) 63XLT (strap-on booster for the OmegA and other commercial, core vehicles). Built and analyzed FE model and associated submodels of one of the primary design concepts for the aft attach structure. Results from this effort were used to down-select to the final design, which was presented to the customer for preliminary design review.

Randolph Afb, Tx, Us

Reason for resignation: Decided to leave full-time employment to launch startup, Tall Tales Engineering, LLC.- Independently conceived, developed and programmed a custom tool called N8TRAN v2.0 with visualization capabilities to simultaneously run tens of thousands of calculations and display margin of safety results for the 1,500 fasteners on the T-38 aircraft wing. This program also has added features to show how failed structural members affect static structural margins on adjacent ribs, spars, and skins. Calculations take into account thousands of variables, such as local wing thickness, spar/rib thickness, fastener size/type, multiple materials capabilities, and interactive effects. This was all accomplished in less than a few weeks time, to respond to a mission-critical situation.This program was successfully used by the engineering team to persuade management to ground aircraft and ensure the safety of USAF pilot trainees. This visualization program also helped upper level management justify the tough, multimillion dollar decision, with direct mission scheduling impacts, and put the safety of the pilots first.- Conduct stress analysis of aircraft metallic structural components (e.g., webs, ribs, formers, longerons, et cetera) to ensure aircraft structural integrity for the USAF T-38 aircraft.- Assess damage reports made by aircraft maintenance personnel and provide responses and instructions for repair, inspect and/or the further disposition of suspect articles.- Track maintenance and damage reports and provide input for annual analytical condition inspections of specific aircraft structural components.- Build FE models using MSC.PATRAN and NX software to evaluate stresses in aircraft structural components.

Randolph Afb, Tx, Us

Reason for resignation: Given opportunity to make a lateral job change within same group of the Air Force to expand repertoire of engineering skills to work as a structural analyst on the T-38 aircraft.- Responsible for developing a working knowledge of all mechanical systems on certain aircraft in order to provide engineering guidance to customers. - Provide prompt engineering solutions in response to reported aircraft related incidents as related to mechanical component or system failures. These systems include the following: o Hydraulic/Pneumatic (e.g., servo-cylinder actuators, pumps, pitot-static, and etc.) o Aircraft Control Surfaces (e.g., aileron, rudder, horizontal stabilizers, and etc.) o Transparencies (e.g., acrylic plastic canopies and windshields) o Landing Gear (Structural) (e.g., brakes, tires, cylinders, and etc.) o Environmental Control (e.g. cooling, heating, and etc.) o Miscellany (e.g. gears, cables, and etc.)

Dulles, Virginia, Us

Reason for resignation: With retirement of NASA’s Shuttle program and watching multiple rounds of layoffs take place within the company, decided to be proactive and apply for employment with the Air Force. Not more than a month after departing, most of the coworkers in this group were laid off.- Primary structural analyst who performed propellant and insulation structural analyses on next generation solid rocket motor Ares 1-X and provided technical reports, assessments and presentations to NASA. - Perform fracture characterization and validation studies on solid rocket motor propellant. - Directed laboratory tests and performed data reduction and analysis to investigate fracture properties and characterize solid rocket motor propellant (a visco-elastic material). - Presented results of analyses to customer (NASA-MSFC) and provided detailed technical reports for customer review and acceptance. - Supported discrepant manufacturing conditions in motors by providing stress analysis input. - Successfully predicted equivalent cross-head displacement rates of propellant fracture specimens using a Finite Element (FE) optimization study in Hyper Study (Altair software) and presented findings to fellow FE analysts located across the country.

Dulles, Virginia, Us

Reason for resignation: Given opportunity to make a lateral job change within company to expand repertoire of engineering skills to work as a structural analyst.- Participated in the design and construction of an ethyl acetate system which was used to test a theoretical design that was developed to resolve past mixing challenges. - Designed, planned and supervised the construction of an innovative desiccant holder for large quantities of high energetic explosives (RDX, HMX). Design met strict safety guidelines (AHOPS) and client specifications. - Designed and managed the installation of a unique HVAC system for explosion rated environment. - Designed special cooling system to comply with process critical specifications for flare production. - Designed and specified fire sprinkler and deluge system for explosion rated propellant mixing facility. - Managed several projects at same time in working with Pipe Fitters, Mill Wrights, Electricians, Planners, Schedulers, Safety, Manufacturing and Tooling Engineers. - Successfully responded to time critical projects. Worked as responsible engineer in the design and implementation of live (explosion rated) operations support.

Reason for resignation: Focus on senior year of engineering and pursuit of employment as engineer.- Worked as a plumbing and HVAC apprentice for a mechanical contractor.o Designed, built, and installed HVAC systems and radiant floor heat systems in commercial and residential buildings.o Performed energy use analysis of hydronic floor heating system and suggested design improvements which ultimately saved the customer money.o Designed and installed ice melt systems.o Installed the plumbing in commercial and residential buildings.o Participated and managed the price calculation and cost assessment of bid proposals.o Responded to emergency, after-hour service calls.o Learned the importance of clear communication in meeting the needs of clientele.

Master Of Science (Msme), Mechanical Engineering

Bachelor Of Science (Bsme), Mechanical Engineering