I don’t understand how they can accurately aim artillery. When they fire the whole machine moves a great deal and it would seem any calibration of its position would be lost.
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The time it takes for the shell to leave the barrel is a fraction of a fraction of a second. There can be things like barrel whip and a tiny little bit of the overall recoil that has an effect on the gun as the shell is travelling down the barrel, but those can be accounted for easily in targeting as they are always the same for every shot. The same principles apply to long-range small arms shooting as well.
You can get a pretty darn accurate shot if you have all of the environmental and gun variables accounted for.
– Muzzle velocity
– shell weight
– shell spin rate, because of the gyroscopic effect
– air temperature (and therefore density)
– wind direction
– wind speed
– altitudes of firing point and target
– barrel whip, maybe even barrel temperature
– distance to target, to account for spin and curvature of the earth
– probably a few more variables I don’t remember
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