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To: House Atreides; DesertRhino

The longer a projectile, any projectile, is in the air, the more likely planetary rotation comes into play. Field Artillerymen and mortar gunners understand this with “high angle” fire, where you are positioning your firing tube at angles above 45 degrees (800 mils) elevation. (usually to fire over an obstacle, such as a hill or mountain.

As time of flight increases, the more the movement of the Earth during flight impacts where your round will strike. Non-guided weapons have to aim where the target will be, so manufacturers provide tables that allow fire direction centers to account for planetary movement during flight over given ranges and times of flight. Additionally, we also have to account for wind speed, temperture, air pressure, target elevation differences, and other factors to hit something from far away.

The effect is real, and has been understood for decades by those of us who throw projectiles through the air for a living.


23 posted on 12/02/2019 6:10:13 AM PST by drop 50 and fire for effect ("Work relentlessly, accomplish much, remain in the background, and be more than you seem.")
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To: drop 50 and fire for effect

Artillery, and mortars, absolutely yes. But there is no measurable distance in the time of flight that takes for a rifle round


68 posted on 12/02/2019 11:14:54 AM PST by DesertRhino (Dog is man's best friend, and moslems hate dogs. Add that up. ....)
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To: drop 50 and fire for effect

Artillery, and mortars, absolutely yes. But there is no measurable distance in the time of flight that takes for a rifle round


69 posted on 12/02/2019 11:15:12 AM PST by DesertRhino (Dog is man's best friend, and moslems hate dogs. Add that up. ....)
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