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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Parabolic Drag
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<blockquote data-quote="Buckys" data-source="post: 2582748" data-attributes="member: 107750"><p>Steve,</p><p>[URL unfurl="true"]https://www.longrangehunting.com/threads/bullets-with-grooves.307692/post-2582734[/URL]</p><p></p><p>Generally, a lot of analysis on drag is part of "fluid dynamics" ... a projectile spinning through the air at 3000+ fps is a concern of fluid (air) dynamics.</p><p></p><p>How you model drag is a function of lots of things including the chaos/turbulence of the fluid flow.</p><p></p><p>When we tried to design airplanes that could break the sound barrier, for example, we found that the drag models used for sub-sonic flight were not adequate to model the drag at supersonic speeds.</p><p></p><p>Here is an university class introducing students to the concepts related to drag:</p><p>[URL unfurl="true"]http://www.dept.aoe.vt.edu/~mason/Mason_f/ConfigAeroDrag.pdf[/URL]</p></blockquote><p></p>
[QUOTE="Buckys, post: 2582748, member: 107750"] Steve, [URL unfurl="true"]https://www.longrangehunting.com/threads/bullets-with-grooves.307692/post-2582734[/URL] Generally, a lot of analysis on drag is part of "fluid dynamics" ... a projectile spinning through the air at 3000+ fps is a concern of fluid (air) dynamics. How you model drag is a function of lots of things including the chaos/turbulence of the fluid flow. When we tried to design airplanes that could break the sound barrier, for example, we found that the drag models used for sub-sonic flight were not adequate to model the drag at supersonic speeds. Here is an university class introducing students to the concepts related to drag: [URL unfurl="true"]http://www.dept.aoe.vt.edu/~mason/Mason_f/ConfigAeroDrag.pdf[/URL] [/QUOTE]
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