Radiation Robot Makes Troops Safer

Darkman, Walkin Dude wrote to mention a plucky little radiation-proof robot working to make life easier for folks in the military. From the article: "By this time an hour and a half had gone by, and the team was temporarily out of ideas. Phil had estimated that the robot could remain ambulatory in the radiation field for only 50 minutes, and in fact the robot's lower portion was no longer responding to commands. The RAP team, as a precaution against this very circumstance, working with White Sands personnel had tied a rope to M2 before sending it into the work area. The rope, attached to a RAP team winch 100 feet outside the structure, ensured the robot could be hauled out if radiation damaged its drive unit. But radiation shields now blocked a direct haul. M2 was hemmed in. Using a ten-foot-long pole and standing at the edge of the field (which fanned out like a flashlight beam, strongest at its center and weakest at its edges), team members hooked and then tugged at the rope hauling M2. The deflection of the rope's pull slid the robot around a moveable radiation shield without knocking it over. The RAP team's winch then pulled the robot directly out. "

Comments

Could Someone Please Explain This?

[kadathseeker]

"But radiation that can kill a human also can kill a robot's electronics. Bennett estimated M2 could withstand intense radiation for only 50 minutes." That's alot of elaboration. I know how cells are affected by radiation, and have and idea of how electronics would be, but I haven't heard alot about this problem and don't know for sure. How exactly are electronics affected by this radiation? Cool robot, though. It'll make a great new overlord.

Re:Could Someone Please Explain This?

[Red Flayer]

Here's some info, relevant material pulled:

"There are many different types of radiation effects, many of which cause both mechanical and electrical degradation. Mechanical defects consist of ones that cause properties of materials to be altered. For instance, such defects could alter the mechanical, optical, thermal and electrical properties of metals. Electrical degradation would physically occur during operation. Due to the accumulation of alpha particles, bits can be flipped during operation and cause system failure"

There's more in-depth info out there, but most of the detailed stuff I was trying to access requires memberships in consortiums etc. I was a little surprised by the bitflipping.

Re:Could Someone Please Explain This?

[willgps]

My lab was involved a few years back with an high performance computing experiment with self-healing FPGA's after exposure to ionising radiation.

They flew some off the shelf (non radiation hardened) FPGAs on the FedSAT-1 spacecraft.

I was involved with a different (GPS) payload, but i believe the HPCE payload was able to successfully self-diagnose and correct single gate errors on the chip. (http://www.crcss.qut.edu.au/comp/hpce.pdf)

Re:I hate reading about stuff like this

[radiotyler]

Woah, calm down. I'm in Iraq. For the second time.

We have these armored IED hunting vehicles. They save lives. And I guess things have changed in the HMMWV department too: ours have been up-armored. I don't want to down play your experience here in Iraq, but things are getting better everywhere, every day.

-t

Re:I hate reading about stuff like this

[darkmeridian]

Well, the Interceptor vest each soldier wears is a great piece of technology. American troops also have night vision. MARPAT camo scheme is scientifically designed to hide troops in many conditions (nighttime, wet/dry on an infrared scope, etc.) A little radio call gets JDAMs or GPS-aimed artillery to drop onto an enemy sniper. And about tanks: there's a tradeoff between the weight and the armor. A heavily armored vehicle will move slower and may be shot more (and we hope it can take the extra punishment). A quicker though less armored vehicle can avoid unguided RPG fire (we hope) and can maneuver through alleyways that troops would otherwise have to clear by foot. (Blowing up the whole block is a war crime.) Having the seats face outward means little in the current battle conditions. RPG-armed enemies pop out for a second to get a shot off and then run away behind a corner or into a hole they had dug out. IEDs, well, you don't want to shoot at those at close range. Now, I'm not saying warfare is easy or harmless. I'm saying we have brought a heck of a lot of technology to bear to reduce the load.