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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Parabolic Drag
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<blockquote data-quote="Hugnot" data-source="post: 2583760" data-attributes="member: 115658"><p>New stuff for me but here goes:</p><p></p><p>Different things make for bullet drag like bullet shape, bullet attitude, & skin friction. As the bullet plows thru air in a parabolic trajectory the attitude of the bullet will change affecting drag & skin friction. This is sort of like what happens with airfoils being affected with variables like lift, angle of attack as shown on graphs looking like a parabola. Driving bands & anular grooves might reduce drag by reducing skin friction causing turbulent air flow but changes of bullet attitude could negate the effect of the driving bands or anular grooves that were previously effective before bullet attitude change. The changing drag effect of the driving bands or anular grooves would also affect the shape of the parabolic graph curve.</p><p></p><p>I sort of think the parabolic stuff is hooked into the parabolic drag graph shape instead of the parabolic flight path.</p></blockquote><p></p>
[QUOTE="Hugnot, post: 2583760, member: 115658"] New stuff for me but here goes: Different things make for bullet drag like bullet shape, bullet attitude, & skin friction. As the bullet plows thru air in a parabolic trajectory the attitude of the bullet will change affecting drag & skin friction. This is sort of like what happens with airfoils being affected with variables like lift, angle of attack as shown on graphs looking like a parabola. Driving bands & anular grooves might reduce drag by reducing skin friction causing turbulent air flow but changes of bullet attitude could negate the effect of the driving bands or anular grooves that were previously effective before bullet attitude change. The changing drag effect of the driving bands or anular grooves would also affect the shape of the parabolic graph curve. I sort of think the parabolic stuff is hooked into the parabolic drag graph shape instead of the parabolic flight path. [/QUOTE]
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Parabolic Drag
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