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Elmen C. Quesinberry

Elmen C. Quesinberry

Earlier this year I wrote a belated tribute to a well-known pioneer in strapdown . Now I must write another tribute, even more belated, to a pioneer who was less well-known — but with a legacy equal to any other whose work helped mine to come alive.


Over three decades (Feb 1961 to Nov 1993) I was a full-time employee of Westinghouse (division names varied from AirArm to DESC to …) — but what I want to express here is first of all a salute to many of the people whose paths crossed with mine. That word “many” is no exaggeration; one recollection that stands out occurred during a chance conversation with Tim Gunn, at about lunch hour, near the cafeteria. Over and over again, seemingly everyone-&-their-brother walking by, was saying “Hi” to me. Tim was flabbergasted at how many people I knew, whether they were from the shop (in some of those cases, from barbershop quartet or other music activities, sports, ... ) or — in many other cases — from one department or another of engineering.


In recollection it is crystal clear that, during that time period, I was privileged to work with many of the best. That includes names like Joe Dorman, Jim Mims,  … And when position/velocity/acceleration gains had to be set for track at lock-on over 7 octaves of range with 16-bit words, George Axelby and John Stuelpnagel helped show the way — and who could forget the Schafer/Leedom/Weigle triumvirate or, from TIR, Bill Hopwood or, from software, names like Heasley + Landry + Kahn + Clark (who as a techie was among the best, as was another from his group — working with me on A12 when John crossed into management) — plus others, too numerous to mention. Many of the latter names are more obscure, it is realized; in some ways that’s the most important part of this effort, to give credit where credit is overdue.  One of the best program manners was named Willett, again not among the most famous within Westinghouse.  Of all the best-and-brightest named &/or unnamed here though, no one stands higher in my memory than Elmen C. Quesinberry. His contribution to Westinghouse’s collection of achievements over time is realized by only very few. I guess what’s important is that he realized it himself; he earned every bit of his salary, and much more.


This revisit-of-history isn’t intended to imply that all was sunshine + roses; in fact, we encountered much major opposition. No need to go into detail here, but many had peripheral (or less) understanding. I made my peace with those long ago and have no desire to retract it. For doubters, flight-validated results appear elsewhere on this site. Enough said; of central importance here is the lasting legacy of a truly great engineer. Elmen C. Quesinberry, a true Christian gentlemen, was an outstanding engineer whose collaboration gave me benefits unsurpassed by any other over three decades at Westinghouse.

By James Farrell 09 May, 2023
A look back in time by James L Farrell, PHD - 2023
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Apologies for little posting lately. Much activity included some with deadlines; this will focus primarily on the few years leading up to Covid.
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Apologies for little posting lately. Much activity included some with deadlines; this will be limited to the past twelve months. In 2017 my involvement in the annual GNSS+ Conference again included teaching the satnav/inertial integration tutorial sessions with OhioU Prof. Frank vanGraas. Part I and Part II are likewise being offered for Sept 2018. Also...Read More
28 Jun, 2018
Once again I am privileged to work with Ohio University Prof. Frank vanGraas, in presenting tutorial sessions at the Institute of Navigation’s GNSS-19 conference. In 2019, as in several consecutive previous years, two sessions will cover integrated navigation with Kalman filtering.  Descriptions of the part 1 session and part 2 session are now available online. By way of...Read More
30 Apr, 2018
The Institute of Navigation’s GNSS+ 2018 Conference provides me the privilege of collaborating with two of the industry’s pillars of expertise. Ohio University Professor Frank van Graas and I are offering fundamental and advanced tutorials.  Then on the last day of the conference I’m coauthored with William Woodward, Chairman of SAE Int’l Aerospace Avionics Systems Division and hardware lead...Read More
24 Apr, 2018
A new SAE standard for GPS receivers is a natural complement to a newly receptive posture toward innovation unmistakably expressed at high levels in FAA and Mitre (ICNS 2018).  Techniques introduced over decades by this author (many on this site) can finally become operational. 1980s euphoria over GPS success was understandable but decision-makers, lulled into complacency, defined requirements in adherence...Read More
22 Mar, 2018
At April’s ICNS meeting (Integrated Communications Navigation and Surveillance) as coauthor with Bill Woodward (Chairman, SAE International Aerospace Avionics Systems Division), I’ll present “NEW INTERFACE REQUIREMENTS: IMPLICATIONS for FUTURE“.  By “future” we indicate the initiation of a task to conclude with a SAE standard that will necessitate appearance of separate satellite measurements to be included...Read More
16 Jul, 2016
A recent video describes a pair of long-awaited developments that promise dramatic benefits in achievable navigation and tracking performance.  Marked improvements will occur, not only in accuracy and availability; over four decades this topic has arisen in connection with myriad operations, many documented in material cited from other blogs here. 
12 Feb, 2016
For reasons, consider a line from a song in Gilbert-&-Sullivan’s Gondoliers: “When everybody is somebody, then nobody is anybody” — (too many cooks) For consequences, consider this question: Should an intolerable reality remain indefinitely intolerable? While much of the advocacy expressed in my publications and website have focused on tracking and navigation, this tract concentrates...Read More
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