Detailed Experience
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Raytheon (Fall 2003 - Present)
Title: Various: Multi-disciplined engineer, system engineer, section manager At Raytheon I have had the pleasure of working on many interesting problems, with interesting people, on a variety of programs. Throughout my time at Raytheon, I have been a part of a loosely defined group known as the line-of-sight (LOS) group. The core skill of this group is stabilization and control of the line-of-sight of optical systems. Due to their skillset, this group is also called on to perform as general estimation experts (geometric and radiometric estimation in addition to strictly LOS activities), and general data analysis and reduction experts.

I have worked in four main roles during my time at Raytheon, in addition to a smattering work hear and there along the way.

This was a proprietary space project with a number of complex technical development features. I was given a broad area of responsibility and asked to make sure that my technical area was always in order.

Accomplishments on APL5: Skills learned on APL5 STSS:
I was brought into STSS during thermal vacuum testing to perform the analysis required to test a data collection activity of the operation system. This data collection activity collects data from a small region centered on a ground target where a laser source is known to reside for use in a subsequent ground-based distortion calibration. The flight software produces telemetry describing where the target was observed, where it was expected, current ephemeris, attitude, time, and associated data. I created test geometries sufficient to determine if the operational software was performing correctly and implemented the test procedure on the flight system. The test showed that the software was not operating correctly, and I was able to trace this to a specific error in the flight software. This was followed by tests of 2-3 additional complex features, also leading to corrections in the underlying test software.

My next substantial activity on STSS was to examine the cause of very poor controller performance found in after the payload had been integrated with the spacecraft. This was traced to an incorrect implementation of anti-windup which led to large angle gimbal wander in certain geometries. After the problem has been sufficiently resolved to allow further testing to proceed, I led a small contract to reexamine the controller settings and see if we could add additional margin to the overall system.

Finally, I designed, built tested and released a Matlab based ground tool to perform the actual calibration using the data collection described above. If things go according to plan this tool will be used in late 2009, after STSS is launched.

Accomplishments on STSS: Skills learned on STSS Section manager:
Late in my assignment on STSS, I started in the role of a section manager. In Raytheon's organization, the section manager is the lowest level manager in the line organization. This is an independent organization from the programs, and is used to provide flexibility as programs come and go. My section has varied in size from 11 to 14 people.

My main responsibilities of a section manager are: Section manager is by its nature a very ambiguous job, and most of the job is learning to just know where help is needed and the best way to provide that help, either by personal technical effort, or by finding additional support.

My main role on VIIRS has been as a section manager. Therefore most of my effort has been simply looking for area which needed help and stepping in to provide that help. Some of the major technical efforts I have supported are described below.

I have supported controls analysis on the VIIRS scan controllers and thermal controllers. This included basic model maintenance and performance predictions, as well as assessing the effects of a controller which appeared only marginally stable.

My next major effort on VIIRS was test data analysis during the VIIRS flight unit one EMI test. This was a 9 day (planned) test which revealed problems in the test setup, test software, data analysis methodology, and the actual VIIS sensor. I led the a team of 5 as we processed 100's of gigabytes of data from more than 200 sweeps in various configurations of the sensor, STE, and test procedure.

However, most of my time on VIIRS is spent handling small pop-up tasks, providing on the job training and surge support to members of my section, and troubleshooting problems in the data analysis process.

Accomplishments on VIIRS: Skills learned on VIIRS

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University of Michigan (Fall 1997 - Summer 2003)
Title: Graduate Student Research Assistant
Ph.D. thesis topic: Methods of comparing logic control design methodologies used in industrial programmable logic controller (PLC) programming. Includes a study of current industrial development methods and an analysis of current and proposed alternatives.
My work here has focused on the study of logic control for industrial machining systems. The goal of this research is to understand the process of creating logic for industrial PLCs, and determine methods to effectively evaluate alternative methodologies. This focuses on the human factors involved in creating industrial control logic. In addition we have been considering the unique factors in this domain such was shop floor environments, thousand's of I/O points, multiple processors, and high reliability requirements.

This work is being done in conjunction with the Engineering Research Center for Reconfigurable Machining Systems. This center is focused on developing and distributing the necessary technology for machining systems which can be constructed of reusable components. In this era of very short product life cycles, it is desirable to be able to reuse expensive manufacturing equipment. Reconfigurable systems are a promising method of accomplishing this.

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Cadence Design Systems (now Tality) (Summer 2000)
Title: Engineer

During this summer I worked with another graduate student from my project to implement a programming environment uniquely suited for embedded systems. We started with a program written by our boss in his spare time. Then we removed numerous bugs, ensured deterministic behavior of the developed systems, and added new functions as needed. By the end of the summer the program was stable and could consistently produce compliable code in a variety of languages from the same file.

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Emmeskay Inc. (Summer 1999)
Title: Controls Engineer

This summer I worked on designing and building a simulation for the control of a hybrid vehicle transmission. Emmeskay Inc. is a consulting company specializing in control design and dynamic simulation, primarily in the auto industry. This work was being done in conjunction with Southwest Research Institute as well as USAauto and Argonne National Labs.

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MTS Systems Corporation (Summer 1996)
Title: Summer intern

During the summer of 1996 I worked with a small division of MTS which designed and manufactured extensometers. I primarily worked alone, doing various engineering odd jobs throughout the summer.

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Caltech (Summer 1996)
Title: Summer Undergraduate Research Assistant

I worked for the summer in the lab of Dr. Yu-Chong Tai examining the mechanical properties of silicon on the micro electrical-mechanical systems (MEMS) scale. We attempted to take the standard methods of performing strength tests on materials and adapt them to the unique problems in MEMS, including the small size of the parts to be tested and the flexibility of silicon. Clamped-clamped testing, which is usually considered an extremely poor test of materials, provided the most consistent results.

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MTS Systems Corporation (Summer 1995)
Title: Summer Intern

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