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The Broadhead



three_broadheads
From TheCrossbowStore Blog




A Different Type of Impact

                    In an inelastic colision, energy is lost to the deformation of one or

        both objects involved in the impact. In the case of a bullet most of that

        high speed energy is transferred into the tissue of the target, often

        causeing severe trama and coagulation.

                With an arrow however, travelling at a much slower speed and

        tipped in some form of a braodhead, the impact results in a deep slicing

        on the target. The idea behind an arrow wound is not that of brute force

        like that of a bullet, but of the finese of the slice of the broadhead.

               


Mechanical Broadheads

mechanical_broadhead
From http://www.midwayusa.com/

                    One of the newest ideas in archery, with respect to broadheads,

       is the mechanical broadhead. During flight it remains closed producing

       less drag on the arrow allowing for a greater velocity, and then upon

       imppact it opens and begins to spread creating a much larger wound then

       fixed bladed broadheads. Some archers have grown to like this new

       style, but some still prefer the more traditional.























































                    An arrow is a projectile but it wouldn't be nearly as efficient of one if it wasn't for another vital component, the broadhead. Not only does a broadhead add additional

            stability to the flight of the arrow, by putting more wings on the front of the shaft and moving the arrows centroid further up the shaft, it also allows the entirety of the

         force of the impact between the arrow and the target to be concentrated at a single point. This impact is the entire goal of the entire bow and arrow system, wheather in

         competition archery, were practice tips are used becasue they require less penitration, or in war, were a very narow tip was used to punch through armor, or in hunting,

         were it may be necesarry to have to shoot through a rib or a shoulder of some animal. Broadheads have come a long way over time, from a traditional arrowhead possibly

         even made of stone all the way up to the modern mechanical broadhead that will open and spread on impact to create larger wounds.



          

Inelastic Collisions




Perfectly elastic collisions are those in which no kinetic energy is lost in the collision. Macroscopic collisions are generally inelastic and do not conserve kinetic energy, though of course the total energy is conserved. The extreme inelastic collision is one in which the colliding objects stick together after the collision, and this case may be analyzed in general terms:
 
HyperPhysics***** Mechanics R Nave


                           From http://hyperphysics.phy-astr.gsu.edu/hbase/inecol.html

                                                                                                                                              

K.E. Lost in Inelastic Collision

 
HyperPhysics***** Mechanics R Nave





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