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Deflection is a technique used for effectively propelling a projectile at a moving target: "leading the target", i.e., shooting ahead of a moving target so that the target and projectile will collide. This technique is only necessary when the target will have moved a sufficient distance to fully displace its position during the time the projectile would take to reach the target's range. This can become the case either over long distances (such as a distant target for a skilled sniper), due to fast moving targets (such as an opposing aircraft in an aerial dogfight), or using relatively slow projectiles, such as a crossbow bolt or a basketball thrown to a running teammate. During World War II, U.S. Navy pilots were taught explicitly on the concept in order to capitalize on the advantages of

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  • Deflection (ballistics)
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  • Deflection is a technique used for effectively propelling a projectile at a moving target: "leading the target", i.e., shooting ahead of a moving target so that the target and projectile will collide. This technique is only necessary when the target will have moved a sufficient distance to fully displace its position during the time the projectile would take to reach the target's range. This can become the case either over long distances (such as a distant target for a skilled sniper), due to fast moving targets (such as an opposing aircraft in an aerial dogfight), or using relatively slow projectiles, such as a crossbow bolt or a basketball thrown to a running teammate. During World War II, U.S. Navy pilots were taught explicitly on the concept in order to capitalize on the advantages of
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abstract
  • Deflection is a technique used for effectively propelling a projectile at a moving target: "leading the target", i.e., shooting ahead of a moving target so that the target and projectile will collide. This technique is only necessary when the target will have moved a sufficient distance to fully displace its position during the time the projectile would take to reach the target's range. This can become the case either over long distances (such as a distant target for a skilled sniper), due to fast moving targets (such as an opposing aircraft in an aerial dogfight), or using relatively slow projectiles, such as a crossbow bolt or a basketball thrown to a running teammate. During World War II, U.S. Navy pilots were taught explicitly on the concept in order to capitalize on the advantages of the F4F Wildcat. Modern day fighter aircraft have automated deflection sights, where a computer calculates lead and projects the solution onto a head up display (HUD). The visual assistance with targeting the gun is offset by the enormous speed and agility of modern aircraft, compared to the days when targeting was less advanced. In artillery, deflection is also used against fixed targets to compensate for windage and range. Due to Earth's rotation, surface points have different velocities and curved motion, leading to apparent Coriolis drift of a long-range target. Leading targets is the practice of aiming one's weapon ahead of his or her target so that the projectiles will hit their mark. Over reasonably short ranges, leading is typically unnecessary when using firearms, but it is still relevant for sniping (where the bullet may take up to a second or more to reach its target), as well as for weapons such as bows that use lower-velocity projectiles. It is generally unnecessary for guided projectiles, although the autonomous guiding mechanism may be designed to calculate a flight path to lead its targets on its own, to ensure an interception.
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