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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Ballistics beyond 2000 yds : do we need/trust them?
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<blockquote data-quote="Gustavo" data-source="post: 139014" data-attributes="member: 6"><p>[ QUOTE ]</p><p>At those distances,depending on which direction your shooting,wouldnt you even have to take the earths rotation into account? /ubbthreads/images/graemlins/grin.gif </p><p></p><p>[/ QUOTE ]</p><p></p><p>At those ranges, the Coriolis effect will account for some errors, almost negligible for small arms.</p><p></p><p>Of course, in order to make a good computation, the model will need the input of latitude and azimuth to the target.</p><p></p><p>When the appropriate Coriolis term is added to the equation of motion the predicted path with respect to the rotating coordinate system is curvilinear, corresponding to the actual straight line motion of the projectile.</p><p></p><p>At extremely long ranges, artillery must fire projectiles along trajectories that are not even approximately straight; they are closer to parabolic, although air resistance affects this.</p><p></p><p>For the longest-range artillery, the Coriolis force becomes important.</p><p></p><p>But again, the effect is really small and is overseeded by many other error sources.</p></blockquote><p></p>
[QUOTE="Gustavo, post: 139014, member: 6"] [ QUOTE ] At those distances,depending on which direction your shooting,wouldnt you even have to take the earths rotation into account? [img]/ubbthreads/images/graemlins/grin.gif[/img] [/ QUOTE ] At those ranges, the Coriolis effect will account for some errors, almost negligible for small arms. Of course, in order to make a good computation, the model will need the input of latitude and azimuth to the target. When the appropriate Coriolis term is added to the equation of motion the predicted path with respect to the rotating coordinate system is curvilinear, corresponding to the actual straight line motion of the projectile. At extremely long ranges, artillery must fire projectiles along trajectories that are not even approximately straight; they are closer to parabolic, although air resistance affects this. For the longest-range artillery, the Coriolis force becomes important. But again, the effect is really small and is overseeded by many other error sources. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Ballistics beyond 2000 yds : do we need/trust them?
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