Ny high-tech ammo

Kulan är 4 tum, dvs ca 10 cm lång. För att det hela skall funka skall bösspipan vara slät, inte räfflad.

DN beskriver idag en ny amerikansk militär ammo. Den är för gevär och kulorna är utrustade med fenor och optisk sensor för att kunna styras undan från civila.... Den skall justera sig själv så att den träffar det mål man laserbelyser.

Företaget bakom kulan, Sandia National Laboratories, beskriver det hela såhär:

Sandia’s design for the four-inch-long bullet includes an optical sensor in the nose to detect a laser beam on a target. The sensor sends information to guidance and control electronics that use an algorithm in an eight-bit central processing unit to command electromagnetic actuators. These actuators steer tiny fins that guide the bullet to the target.

Most bullets shot from rifles, which have grooves, or rifling, that cause them to spin so they fly straight, like a long football pass. To enable a bullet to turn in flight toward a target and to simplify the design, the spin had to go, Jones said.

The bullet flies straight due to its aerodynamically stable design, which consists of a center of gravity that sits forward in the projectile and tiny fins that enable it to fly without spin, just as a dart does, he said.

Vidare så skriver dem:

Researchers also filmed high-speed video of the bullet radically pitching as it exited the barrel. The bullet pitches less as it flies down range, a phenomenon known to long-range firearms experts as “going to sleep.” Because the bullet’s motions settle the longer it is in flight, accuracy improves at longer ranges, Jones said.

“Nobody had ever seen that, but we’ve got high-speed video photography that shows that it’s true,” he said.

Potential customers for the bullet include the military, law enforcement and recreational shooters.

Min invändning är att det förvisso är den 1:e idag, men inte april utan februari. Men jag kanske har fel, det sägs att jag haft det förr....

Tillägg: Ny Teknik skriver också om kulan.