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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Parabolic Drag
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<blockquote data-quote="Greyfox" data-source="post: 2583534" data-attributes="member: 10291"><p>I'll take a crack at it. My simplistic interpretation of parabolic drag as it effects a bullet in flight, is perhaps best explained in a picture depicting parabolic drag. This holds true for projectiles whether a bullet, baseball, arrow, etc. </p><p>The bullet in flight will travel in a parabolic shape, parabolic "drag" occurs after the bullet reaches the apex(highest point in the trajectory), changing the paranoiac curve(back-side) of the falling bullet. This shape is present with all trajectories, </p><p>In addition to gravity, the factors effecting forward and falling motion of the bullet on the back of the curve are, velocity, air resistance/drag force, shape, surface area of the projectile(bullet), and angle. IMO, using "our" lingo, we capture much(or all) of this with the bullets ballistic coefficient(BC). The external effects are compensated for with our ballistic calculators/drop charts. </p><p></p><p>Rockymtn/Mt….I would speculate that the comment made about your bullet effecting parabolic drag was inferring that your bullet design, right or wrong, perhaps could have been better expressed by saying that it didn't have as high a BC as whatever he was using. </p><p>[ATTACH=full]381904[/ATTACH]</p></blockquote><p></p>
[QUOTE="Greyfox, post: 2583534, member: 10291"] I’ll take a crack at it. My simplistic interpretation of parabolic drag as it effects a bullet in flight, is perhaps best explained in a picture depicting parabolic drag. This holds true for projectiles whether a bullet, baseball, arrow, etc. The bullet in flight will travel in a parabolic shape, parabolic “drag” occurs after the bullet reaches the apex(highest point in the trajectory), changing the paranoiac curve(back-side) of the falling bullet. This shape is present with all trajectories, In addition to gravity, the factors effecting forward and falling motion of the bullet on the back of the curve are, velocity, air resistance/drag force, shape, surface area of the projectile(bullet), and angle. IMO, using “our” lingo, we capture much(or all) of this with the bullets ballistic coefficient(BC). The external effects are compensated for with our ballistic calculators/drop charts. Rockymtn/Mt….I would speculate that the comment made about your bullet effecting parabolic drag was inferring that your bullet design, right or wrong, perhaps could have been better expressed by saying that it didn’t have as high a BC as whatever he was using. [ATTACH type="full"]381904[/ATTACH] [/QUOTE]
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Parabolic Drag
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