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Sandia Labs engineers create ‘self-guided’ bullet
ALBUQUERQUE, N.M. (AP) - Figuring out how to pack a processor and other electronics into a machine gun bullet has been a challenge for engineers at Sandia National Laboratories, so weapons experts say the miniature guidance system the lab has developed is a breakthrough.
Three years in the making, the bullet prototype represents another step toward a next-generation battlefield that scientists and experts expect to be saturated with technology and information.
“In the laboratory, I’m able to make machines so incredibly small it kind of boggles my mind,” said Red Jones, one of the Sandia researchers who helped develop the laser-guided .50-caliber bullet. “Where we’re headed, we’re going to be limited only by our imagination.”
Developing more precise weaponry has been a mission for government and industry scientists for decades. Most recently, the research arm of the U.S. Department of Defense has awarded tens of millions of dollars in contracts to companies to develop guided ammunition for snipers and special scopes that account for crosswinds and other environmental variables.
The idea behind Sandia Labs’ bullet is rooted more in the M2, a belt-fed machine gun that became standard issue in the U.S. Army nearly 80 years ago. Pairing the M2 with the guided bullet would allow soldiers to hit their mark faster and with precision.
At 4 inches long and a half-inch in diameter, the bullet directs itself like a tiny guided missile and can hit a target more than a mile away.
It’s designed to twist and turn, making up to 30 corrections per second.
“Everybody thought it was too difficult to make things small enough. We knew we could deal with that. The other thing was it was going to be too complicated and expensive,” he said. “We came up with an innovative way around that to make it stupid and cheap and still pretty good.”
Jones and his fellow researchers had initial success testing the design in computer simulations and in field tests of prototypes, built from commercially available parts.
With most of the hard science done, Jones said the next step is for Sandia to partner with a private company to complete testing of the prototype and bring a guided bullet to the marketplace.
More than $1 million in research and development grants have taken the project this far.
Computer simulations showed an unguided bullet under real-world conditions could miss a target more than a half mile away by nearly 10 yards. But according to the patent, a guided bullet would get within eight inches.
The design for the bullet includes an optical sensor 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. The actuators steer the fins that guide the bullet.
Jones said there are still some engineering problems to be sorted out that will make the bullet more practical _ for example, it will have to be tough enough to be dropped off the back of a truck and still work.
Even more innovation is needed for the manufacturing process.
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