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In ballistics, the ballistic coefficient (BC, C b) of a body is a measure of its ability to overcome air resistance in flight. [1] It is inversely proportional to the negative acceleration: a high number indicates a low negative acceleration—the drag on the body is small in proportion to its mass.
The flight path angle is shallow, meaning that: , . The flight path angle changes very slowly, such that d γ / d t ≈ 0 {\displaystyle d\gamma /dt\approx 0} . From these two assumptions, we may infer from the second equation of motion that:
It is recommended to name the SVG file “Ballistics, force diagram applied on a projectile in flight.svg”—then the template Vector version available (or Vva) does not need the new image name parameter.
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External ballistics or exterior ballistics is the part of ballistics that deals with the behavior of a projectile in flight. The projectile may be powered or un-powered, guided or unguided, spin or fin stabilized, flying through an atmosphere or in the vacuum of space, but most certainly flying under the influence of a gravitational field.
External ballistics is the part of the science of ballistics that deals with the behaviour of a non-powered projectile in flight. External ballistics is frequently associated with firearms, and deals with the unpowered free-flight phase of the bullet after it exits the gun barrel and before it hits the target, so it lies between transitional ...
Example of a ballistic table for a given 7.62×51mm NATO load. Bullet drop and wind drift are shown both in mrad and MOA.. A ballistic table or ballistic chart, also known as the data of previous engagements (DOPE) chart, is a reference data chart used in long-range shooting to predict the trajectory of a projectile and compensate for physical effects of gravity and wind drift, in order to ...
Two equations can be set up that describe the bullet's flight in a vacuum, (presented for computational simplicity compared to solving equations describing trajectories in an atmosphere). x ( t ) = v b u l l e t cos ( δ θ ) t {\displaystyle x(t)=v_{bullet}\cos(\delta \theta )t\,} (Equation 1)