Laser weapons inch closer to battlefield

Who wouldn’t want a ray gun?

The military aims to turn lasers weapons from science fiction into reality for everything from space platforms to Humvees.

“RELI” is the Department of Defense’s relatively new Robust Electric Laser Initiative, which is meant to create next-generation lightweight, compact laser weapons.

Weaponized lasers will bring nearly instant, extremely precise strikes to the battlefield. And with “deep magazines” of laser-ness, they remove the worry of running out of ammunition. Plus lasers can be calibrated to the scale of the threat, ranging from a non-lethal blow through to taking out a missile.

That’s why several big defense companies are taking a fresh look at lasers.

Thin Disk Laser
This week, Boeing announced that its “Thin Disk Laser” system surpassed the DoD’s requirements for the RELI system. It takes a series of commercial solid-state lasers and integrates them to produce one concentrated high-energy beam.

Leveraging commercially available lasers provides a number of benefits like keeping costs down and ensuring they need minimal support and maintenance.

Boeing said blasts from its Thin Disk Laser surpassed 30 kilowatts in power, more than 30 percent over DOD standards and enough to do some serious damage to a battlefield threat.

“Our team has shown that we have the necessary power, the beam quality, and the efficiency to deliver such a system to the battlefield,” said Michael Rinn, vice president and program director of Directed Energy Systems for Boeing.

The demonstrations were the first time the system simultaneously achieved high power and high beam quality, which helps improve the laser’s focus at longer ranges.

How does it work?
There are lots of different types of military lasers. The RELI program focuses on solid state ones – so called because they have a lasing medium that is solid crystal.

Lasing is the process that gets light particles excited enough to emit a particular wavelength. On their most basic level, lasers work by getting photons stimulated, concentrating them using something -- in this case a solid like a prism -- and then directing them into a beam.

The biggest leaps in solid-state laser technology have been made through the U.S. military's Joint High Power Solid-State Laser (JHPSSL) program, which has ignited some major headway in this sort of tech.

But Boeing has also been making progress in other sorts of military laser weapons. Notably, the company was awarded a U.S. Navy contract to develop the Free Electron Laser weapon system to build an ultra-precise laser gun to defend U.S. ships.

Also under development for the US Navy, the Mk 38 Mod 2 Machine Gun System with Tactical Laser System soups up a gun already deployed worldwide with a solid-state, high energy laser weapon.

Back in the RELI ring, Northrop Grumman has made some key forays forward in high-energy solid-state lasers.

In 2001, the company became the first to successfully operate a laser weapon at sea for the U.S. Navy.

With its JHPSSL system, Northrop became the first to achieve the 100-kilowatt power level threshold for a solid-state laser in 2009.

Northrop Grumman is leveraging work undertaken for the Joint Technology Office, Air Force Research Laboratory, and the U.S. Army Space and Missile Defense Command and DARPA’s Revolution in Fiber Lasers (RIFL) program.

And then there’s this: The Army Space and Missile Defense Command recently gave Lockheed Martin a $14 million contract to develop a system for the RELI program.

The company’s Aculight uses “Spectral Beam Combining” to produce a high power laser beam. It works sort of like an inverse prism, with lasers of slightly different wavelengths entering it and coming out as a single beam.

The result is a compact fiber laser system capable of producing 100 kilowatts of power.

Fiber lasers tend to need less power to operate and optical fibers provide nearly perfect quality beams. Rather than using mirrors that can become misaligned, this approach confines the light within the fiber’s glass structure.

Ballet dancer turned defense specialist Allison Barrie has traveled around the world covering the military, terrorism, weapons advancements and life on the front line. You can reach her at wargames@foxnews.com or follow her on Twitter @Allison_Barrie.

View the original article here

Navy could soon use 3-D printers to manufacture drones and weapons

The U.S. Navy could soon be using 3-D printers to manufacture its drones. (Reuters)The first wave of tomorrow's wars may begin with a printout.

When U.S. Navy ships need to resupply ammunition and other essential equipment, they have to pull into port. But could the advent of 3-D printers cut out the middleman, allowing the military to literally print out weapons and other supplies?

Writing in the Armed Forces Journal, Lt. Cmdr. Michael Llenza says rapidly evolving technology may soon make 3-D printer warfare a reality.

“For the Navy, the technology promises to shift inventory from the physical world to the digital one,” Llenza writes. “Instead of actual parts, a ship might carry 3-D printers and bags of various powdered ingredients, and simply download the design files needed to print items as necessary.”

The idea isn’t as far-fetched as it might sound. After all, a college student recently made international headlines with his 3-D printer gun schematic. And just last week, NASA announced it had given a grant to a company working on a 3-D food printer. For its part, NASA has been at the forefront of 3-D printing, producing "mission ready" parts with the technology and even showing how 3-D printers can work in space.

As Extreme Tech’s Graham Templeton writes, 3-D printing presents some other fascinating future concepts of how military technology is used, and then potentially reused. “In terms of military efficiency, I think the next great step in automating war will be recycling. Will future soldiers be collecting their spent casings, not to protect the locals or the environment, but to be broken down and reused later? Could we turn a drone into a combat helmet into a plate of light-weight Humvee armor, as needed?”

And even as President Barack Obama announced his intention to scale back the military’s use of unmanned aerial drones, Llenza says 3-D printing would be ideal for creating a fleet of easily replaced drones for the Navy. There have already been some attempts at making 3-D printed drones, with varying degrees of success. And while Llenza acknowledges that the technology is still a ways off from becoming practical for everyday use, he says that day is not far off:

“The eventual goal is a drone that flies right out of the printer with electronics and motive power already in place,” he writes. “An organic ability to print replaceable drones from ships, forward operating bases or during disaster relief operations to serve as targets or observation platforms could be a huge enabler for sailors and Marines.”

View the original article here