I don't have your article but here are links to online thrust and HP calculators. Indications are the thrust calcs are like 50% high. HP may be closer. I am compiling reported thrust and HP for RC engines and have enough data to select props for a given engine pretty well. Thrust data is sparse, tho we can all measure thrust with a fish scale - very few do it and report the results. I am building a simple, fairly accurate thrust stand and will run some props at home to see what I get. We don't need super accuracy for our purposes but I would like something better than "it pulls like crazy".


http://pages.sbcglobal.net/limeybob/horsepower3.html
http://www.lcrcc.net/thrust_calc.htm