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Monthly Archives: March 2020
Maple Sap is Sweet This Year
I am being a good citizen and am socially distancing at my cabin in northern Minnesota – avoiding people is easy in the dense forests that surround my residence. When I went out for my daily walk and I saw the maple sap bags that my neighbor put out (Figure 1). Most folks around here collect their sap in these blue bags. Continue reading
WW2 Fighter Aircraft Fuel Fraction
I recently read a book called Boyd: The Fighter Pilot Who Changed the Art of War that documents the life of John Boyd, a fighter pilot who was critical to putting fighter aircraft design on a firm mathematical footing now called Energy-Maneuvering Theory. He was a key member of the Fighter Mafia, a group of military and industry experts in the 1970s that advocated for a lightweight fighter alternative to the large, heavy fighters like the F-111 and MiG-25. Their concepts played a significant role in the final designs of the F-16 and F-18. Continue reading
Posted in Excel, History Through Spreadsheets, Military History 2 Comments
Combined Excel Timeline/Column Chart using WW2 Naval Air Data
I recently needed to generate a graph in Excel that combined a column chart with a timeline. The graph turned out well and I decided to share my work here. As my original work is proprietary, I will share the technique here using some US Navy (USN) air operations data from WW2. Continue reading
Posted in Excel, History Through Spreadsheets, Military History Comments Off on Combined Excel Timeline/Column Chart using WW2 Naval Air Data