Morphing Man and Machine
What the exoskeleton program at DARPA plans to do is turn ordinary soldiers into super-troops who can leap tall objects and run at high speeds. This program is still in the early stages, so details of these wearable machines are still very vague. However, DARPA has set some expectations for these exoskeletal machines. Here's what researchers expect exoskeletons to do for soldiers:
Increase strength - Soldiers will be able to carry more weapons and supplies. By increasing strength, soldiers will also be able to remove large obstacles from their path while marching. It will also enable them to wear heavier body armor and other ballistic protection. In the 1960s, General Electric and the U.S. military co-developed an exoskeleton, named Hardiman, that made lifting 250 pounds feel like lifting 10 pounds.
Increase speed - An average human walks 4 to 6 mph, but soldiers are often expected to carry up to 150 pounds of supplies in their backpacks. Even the best-conditioned troops cannot go very fast carrying that much weight on their backs. It's not certain how fast DARPA's exoskeleton will be able to move. An independently developed body amplifier, the SpringWalker, has been tested at speeds faster than 10 mph (16 km/h).
Leap great heights and distances - It's unclear just how far or high soldiers will be able to jump wearing mechanical suits, but officials would like the machine to give soldiers the ability to leap over obstacles that would ordinarily slow troops down.
Overall, soldiers will benefit from increased endurance when marching long distances over unpredictable terrain. With increased strength, they will also be able to repair heavy equipment that would otherwise be impossible to repair. Experts expect fewer casualties because of increased body armor.
Photo courtesy DARPA
An artist's concept of how future soldiers will look when wearing exoskeletal machines.
These exoskeletal machines would also be equipped with sensors and Global Positioning System (GPS) receivers. Soldiers could use this technology to obtain information about the terrain they are crossing and how to navigate their way to specific locations. DARPA is also developing computerized fabrics that could be used with the exoskeletons to monitor heart and breathing rates.
If the U.S. military has its way, it will have throngs of super soldiers that can jump higher, run faster and lift enormous weight by strapping these exoskeletons to them. However, developing these devices is expected to take years, if not decades. In the next section, you will learn about some of the obstacles that face researchers charged with developing these exoskeletons.
Tuesday, March 25, 2008
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