This research enriched the penetration experimental data, and provided theoretical support for penetration prediction and projectile structure design. International Journal of Impact Engineering 30 They are massively powerful opiates—Carfentanil is a commercially available analogue used to tranquilize elephants—which are also highly dangerous. Description Tapered Tip End Piece can be attached to the end of the protrusion rod allowing the user to push through a damaged or difficult hole. No, it's not a rave toy gone horribly wrong, it's another spooky tool making its way into the hands of law enforcement and the military. The Israeli Army has developed a device they're calling "The Scream," which issues short bursts of highly tuned sound designed to get in someone's head and stay there most uncomfortably until they leave the device's range. The three measuring devices and accessories make crime scene investigations easier, quicker, and more accurate.
At its core, it's the same basic technology as found in a drugstore laser pointer, only a billion times more powerful. Sign up for our newsletter. International Journal of Impact Engineering 28 1: The current generates a strong magnetic field which then accelerates the projectile to mind-bending speeds. William Prescott readied his men at the Battle of Bunker Hill with the now famous words, "do not fire until you see the whites of their eyes! As if most people weren't already creeped out enough by insects, the Defense Advanced Research Projects Agency Darpa has been working to develop cyborg spy moths. This one would be the hands down winner for spookiest name if the award weren't just a consolation prize—the Rods from God will do just fine competing for the spookiest weapon, regardless of name, thank you very much.
Laser Trajectory Kit
The first weapon on the list is arguably both the spookiest and the most terrifying from beginning to end. Our Trajectory String Kit ends the mess and clutter of old string storage containers. Google Scholar , Crossref. The BP-1 unit is powered by a pair of inexpensive N-size 1. It works by mounting a semi-automatic pistol to the hinged front half with remote linkage to the trigger at the rear and can swivel through a degree range. Description 48" long nylon bag with draw string to store 48" trajectory rods or 48" Evidence Marking Poles. Sign up for our newsletter.
Each kit contains 12 rods four pink, four green, four orange and includes 9 plastic connectors. Along with the lasers, this kit includes all the tools necessary for shooting reconstruction. Thus, compared with the tapered projectile, the grooved-tapered projectile with the same mass and projectile length had a similar trajectory stability, stronger penetration ability, and better structural stability, which lead to a better projectile structure design. Many thanks to the nd factory of the China North Industries Group for their support in the experimental research. Combined with the crater depth model established earlier, the expressions of the penetration resistance F are presented as follows:. They also found that the projectile material is of great significance in ensuring structural strength, reducing mass erosion, and increasing penetration ability.