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Sporting and Defense Ammunition

 

Mechanically Adaptable Projectile Is Rocket Science

Randy Teig

How the MAPX Projectile Works

The following illustrations demonstrate how a single Mechanically Adaptable Projectile can be optimized for different performance. The ability to adapt the center of mass for optimal flight or increase the size of the hollow point for more acute hydrostatic pressure. (Courtney and Courtney, 2008) https://arxiv.org/pdf/0803.3051.pdf

Illustration 1 The illustration shows the center of mass as a white and black circle and the center of pressure as a line. The IC (red part) is adjusted to the tip for increased penetration and optimized flight when fired from a rifled shotgun. The additional release of the .25 caliber Interchangeable Component will create a secondary cavity.

Illustration 1

The illustration shows the center of mass as a white and black circle and the center of pressure as a line. The IC (red part) is adjusted to the tip for increased penetration and optimized flight when fired from a rifled shotgun. The additional release of the .25 caliber Interchangeable Component will create a secondary cavity.


Illustration 2 The illustration shows the center of mass as a white and black circle and the center of pressure as a line. By adjusting the IC toward the base of the projectile the hollow point diameter and depth is opened, increasing the rate at which energy is transferred into the target upon impact. The release of the .25 caliber Interchangeable Component (red part) will create a secondary wound channel.

Illustration 2

The illustration shows the center of mass as a white and black circle and the center of pressure as a line. By adjusting the IC toward the base of the projectile the hollow point diameter and depth is opened, increasing the rate at which energy is transferred into the target upon impact. The release of the .25 caliber Interchangeable Component (red part) will create a secondary wound channel.


Illustration 3 With the IC removed, this projectile is optimized for rapid transfer of energy from the Core Projectile Module (grey part) into the target. This creates an acute hydrostatic pressure curve in aqueous mediums (animal and human). This is a preferred adaptation for home and personal defense.

Illustration 3

With the IC removed, this projectile is optimized for rapid transfer of energy from the Core Projectile Module (grey part) into the target. This creates an acute hydrostatic pressure curve in aqueous mediums (animal and human). This is a preferred adaptation for home and personal defense.


Illustration 4 Removing the shorter Interchangeable Component and replacing it with a full length IC gives increased mass, metallic meplate, smaller hollow point and increased core rigidity. The end result of this adaptation is maximum penetration with the release of the 40 to 75 grain, .25 caliber Interchangeable Component after impact. This creates a secondary wound channel.   

Illustration 4

Removing the shorter Interchangeable Component and replacing it with a full length IC gives increased mass, metallic meplate, smaller hollow point and increased core rigidity. The end result of this adaptation is maximum penetration with the release of the 40 to 75 grain, .25 caliber Interchangeable Component after impact. This creates a secondary wound channel. 

 


Material Science And The Mechanically Adaptable Projectile

The Core Projectile Module is made of a high tech material that has significantly reduced skin friction when compared to prevailing projectile materials. We are able to push the projectiles faster without excessive pressure. We have chosen to use high tech materials to reduce drag, the military is trying to do the same through other means http://bulletin.accurateshooter.com/2009/04/us-army-team-tests-radical-new-dimpled-bullet/  The material is also extremely reactive to aqueous (water based) mediums. This enables extremely fast transfer of energy into the target. We can adapt the reactive characteristics of the projectile by adding components with different mechanical properties.

SlapShot Precision Home Defense Slugs

Editor

SlapShot Precision Home Defense slugs efficiently release energy upon impact. For this test we placed a level three bullet resistant panel in front of a 20% gel human analog. Also a wood dowel was embedded in the gel to see if enough energy would enter the gel to rupture the dowel. Material data says rupturing requires approximately 10,000 PSI http://www.wood-database.com/poplar/ . The PHD-125 was used for this application.

Using a slow motion camera we were able to capture the projectile at the moment of impact. The red crescent in the upper right quadrant is the projectile striking the panel and emitting a flash of light. https://www.productionmachining.com/articles/heat-treat-colors-for-steel

Using a slow motion camera we were able to capture the projectile at the moment of impact. The red crescent in the upper right quadrant is the projectile striking the panel and emitting a flash of light. https://www.productionmachining.com/articles/heat-treat-colors-for-steel

The energy from the impact causes the gel to burst in a spherical pattern. The wood dowel can be seen amidst the gel.

The energy from the impact causes the gel to burst in a spherical pattern. The wood dowel can be seen amidst the gel.

This is the front side of the level three panel. The hole is almost 3/4 of an inch in diameter.

This is the front side of the level three panel. The hole is almost 3/4 of an inch in diameter.

This is the back side of the level three panel. Note how the energy passing through the panel melted the kevlar threads.

This is the back side of the level three panel. Note how the energy passing through the panel melted the kevlar threads.

We melted the gel down to recover the slug fragments. This is all that was recovered. 

We melted the gel down to recover the slug fragments. This is all that was recovered. 

The projectile did not impact the dowel, the pressure wave was strong enough to rupture the dowel. Material specifications say it takes up to 10,000 PSI to rupture the material. http://www.wood-database.com/wood-articles/modulus-of-rupture/

The projectile did not impact the dowel, the pressure wave was strong enough to rupture the dowel. Material specifications say it takes up to 10,000 PSI to rupture the material. http://www.wood-database.com/wood-articles/modulus-of-rupture/

 
 

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