Military Tech

(Credit: Mark Rutherford)

FORT HOOD, Texas--Soldiers and civilian contractors braved the heat here this week for the first Robotics Rodeo to view and interact with a long lineup of robot systems and to give feedback on which ones could potentially find a place in the U.S. Army's robo stable.

Despite the hundreds of military robots that show up in concept or as prototypes on company Web sites and corporate reports, humans still do the fighting on the ground and it's likely to stay that way for a while. However, there's a growing niche for "the dirty, the dull, and the dangerous" jobs where robots could take over. In fact, it's the law. The 2001 Senate defense authorization bill mandates that "one third of the operational ground combat vehicles of the armed forces will be unmanned by 2015."

The Army wants robotic researchers, developers, and manufactures, many of whom have collected millions in government seed money and grants over the years, to get off the dime and start delivering (PDF).

"If you're not fielding, you're failing," said Lt. Gen. Rick Lynch, Fort Hood commander and co-host of the Robotics Rodeo.

Lynch cites the rapid advancements made in fielding unmanned aerial vehicles (UAVs).

"Most folks are familiar and comfortable with (UAVs), and we've shown over eight years of combat just how critical those systems are to the warfighting effort when properly used and integrated," Lynch said. "There are hundreds of other robotic concepts that could also be useful to our Army and this Robotics Rodeo will showcase some of those--it's a great educational opportunity."

Photos: Robots audition for Army

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The U.S. Army Tank Automotive Research, Development and Engineering Center (TARDEC) and Fort Hood III Corps invited more than 40 vendors to attend the rodeo and show off their wares.

In terms of priorities, clearance of improvised explosive devices (IEDs) tops the general's wish list. Other needs include programmable unmanned ground vehicles (UGVs) to patrol and make deliveries on planned routes or conduct "persistent stare," i.e. long-term surveillance missions.

"The enemy often places IEDs in the same locations that he has used in the past. A robotic system that can observe these locations for a prolonged period of time and alert us of a significant change would be of great value," Lynch said. One of true tests would be a UGV that acts as a robotic wingman or can assume a role as a member of a squad.

However, most UGVs in service today are limited to detecting and defusing IEDs. Concepts to broaden their uses are many, but it's unclear how practical and feasible they are. In any case, much of the technology on display at the "rodeo" is commercial off-the-shelf--some of it already in use in private industry.

So what's keeping the stuff on display from becoming standard issue? Three letters--ONS--according to vendors.

If there's an urgent need for equipment, a general officer may step forward and submit an ONS, or Operational Needs Statement, to get the ball rolling. No one is willing to do so, vendors complain. For example, the Qinetiq rep says his modular advanced armed robotic system (MAARS) could be ambushing IED-planting bad guys right now, but for the paperwork (PDF).

The true test: be the first to sign off on a M240B machine-gun-mounted UGV.

Qinetiq's Modular Advanced Armed Robotic System (MAARS).

(Credit: Mark Rutherford)

(Credit: iRobot)

The military sees a need for a flying robot that can swoop into an enemy position, transition to wheel or track mode, and then get busy icing bad guys--something along the lines of the Griffon UGV/UAV Air Mobility System.

While unmanned aerial vehicles (UAVs) can wing in quickly to reconnoiter or attack enemy positions, they can't follow a target into a cave or a building. Unmanned ground vehicles (UGVs), on the other hand, can enter structures, search for targets, and examine them at close range, but they're slower than UAVs, have less range, and are limited by rough terrain.

Awhile back, the U.S. Army Tank-automotive and Armaments Command and the Armaments Research, Development, and Engineering Center funded an iRobot team led by Brian Yamauchi and Pavlo Rudakevych to develop a solution. They came up with the Griffon (PDF), an iRobot PackBot prototype strapped to a gasoline-powered, propeller-driven, radio-controlled, steerable parafoil system. The UVG hangs from a superstructure on which is mounted a 32cc Fuji engine behind an 18- by 8-inch propeller.

For the parafoil, the team considered a wide range of extreme sport kite surfing and traction wings but settled on the 11-meter Ozone Razor. This parafoil is attached by two hang points on the sides, with two arms to control the wing surface and a quick release to jettison the whole contraption on touchdown.The PackBot's on-board computer does the driving and controls the gas. Video, audio, and autonomous ground GPS navigation is also a standard PackBot feature.

The kit is designed to be man-packable and could be used by civilian teams for search-and-rescue in hazardous terrain in addition to military recon and strike missions in urban environments, according to the researchers.

A prototype was tested a few years age and apparently worked well, although it wasn't much to look at. It took off, soared up to 200 feet, landed, and then moved out at speeds of more than 20mph, all under remote control--a first, according to the inventors Yamauchi and Rudakevych. Unfortunately, that's the last it was heard of. The concept deserves another look; it has the makings of a great DARPA challenge.

(Credit: Metal Storm)

After years of development, a new class of weapon that uses computer-controlled electronic ignition instead of primers to fire projectiles may be finally taking its much coveted place in the U.S. military inventory.

Brisbane, Australia-based Metal Storm has delivered a four-barrel weapon to the Naval Surface Warfare Center for testing that uses a small electrical current instead a conventional firing pin to deliver stacked rounds at an astounding rate.

How astounding? Try 1 million rounds per minute. That's the rate, by the way, not the volume; still, there's no way you want to be anywhere near the wrong end of one of these puppies.

One version, the Redback, features a remotely operated 40mm that can automatically track targets by slewing around at almost 2 complete revolutions per second, according to the company. "The employment of Metal Storm's stacked round technology for a U.S. military weapon system is a huge step for us," Metal Storm CEO Lee Finniear said in the company's press release.

Electronically fired weapons and the general concept have been around for awhile--Austrian company Voere offers an electric, bolt-action hunting rifle--but nothing has approached Metal Storm (PDF). Metal Storm weapons use multiple, "lightweight, economical barrels" mounted in pods on a variety of platforms that can fire a wide selection of munitions.

The projectiles are stacked in-line in the barrel--nose to tail--so there are no magazines, no shell casings, and no mechanical components. This makes them ideal for unattended area denial or picket duty. They are also easily adapted to light vehicles and robot platforms. In fact, the company just signed an MOU with iRobot Government & Industrial Robots to combine its robot platforms with Metal Storm's scalable systems.

"Together with Metal Storm, we aim to develop a superior next-generation weapons platform that ensures absolute safety and always places a human in the decision loop," iRobot's Joe Dyer promised in announcing the agreement. "When you are talking about weaponizing robots, there is no margin for error."

Especially at a million rounds per minute.