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It is rather disturbing to read that the formulas that are supposed to keep planes safely in the air refer to certain parts of the human anatomy (feet), the stamina of certain mammals (horsepower) and certain species of snail (slugs). Would the author of this article therefore please resort to the use of the metric (SI) system.
Only propeller driven aircraft can use this equation. It's based on circular logic anyway. I'm volunteering to write this section up to snuff, but I've heard that the wiki gods are being cliquish. Not elitist, cliquish. Anyway, I am an aerospace engineer and find that many of the articles on aerodynamics are very, very poorly written in terms of their usefulness as a reference for aircraft design. I can't even look up basic topics. So instead of using a web source that's fast, I end up using a textbook that's slow. This is in stark contrast to wiki's usefulness as a reference for other technical topics. —Preceding unsigned comment added by Knappador ( talk • contribs) 01:26, 31 March 2010 (UTC)
In the 3rd paragraph down, parasitic drag is basically - and I'm paraphrasing heavily here - described as a the equivalent of a flat square disk. I had no idea that such a creature existed. I'm keen to know what the silhouette of a square disk would look like. My confusion stems from being taught that a disc, or the general shape of a disc, the basic disc shape... is circular, or you might also say it is 2 dimensionally spherical. Confusion also comes from being taught that a square, or the general shape of the square, your basic square shape is... well, very much square, but an argument could be made that it more closely resembles a 2 dimensional cube. There's an alarm going off in my brain somewhere telling me that these are mutually exclusive geometric conditions. Why does this feel like Schrodinger's OTHER box.... you know, the one that's only a cube when you look at it. 24.116.155.183 ( talk) 14:55, 13 September 2014 (UTC)
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