It’s been a minute since we saw the last badass compressed air-powered motorcycle , so seeing as digital designer / 3D modeler Pierrick Huart finally got around to uploading the Saline Airstream to his Coroflot portfolio this past September, it’s worth revisiting even a year and a half after its debut. Back in March 2011, Technologic Vehicles reported that Huart was a member of one of seven teams of students from the International School of Design (ISD) in Valciennes, France, who submitted projects to a speedy brief from “Les Triplettes de Bonneville.” (As such, we’d be remiss not to credit fellow team members Vincent Montreuil, Julien Clément, Thomas Duhamel and Benedict Ponton.) Described as “crazy French DIYers,” the triplets selected the Saline Airstream design, when features an Alu-Magnesium chassis by Daniel Heurton and weighs in at only 102kg (224 lbs). Meanwhile, Wes Siler of Hell for Leather explains the technology behind the engine far better than I could ever hope to: Pneumatic engines using compressed air as their power source aren’t new. If you’ve used an impact wrench or other pneumatic workshop tool, then you’ve used a compressed air engine. The technology enjoys particular interest in France, where Victor Tatin conceived an airplane powered by it all the way back in 1879. That’s where Les Triplettes des Bonneville, the team that will run the Airstream and the makers of its engine come from. The company making the engine is MDI, which is pushing the technology in low-speed, urban vehicles. Like electricity, compressed air is zero emissions (well, technically it’s emitting air…), but unlike electricity, fill ups don’t take hours. You can fill a compressed air tank from a compressor or storage unit in the same time it takes to fill up with gasoline. The downside is that power output and therefore performance are so far somewhat limited, something Les Triplettes are trying to address. The function of a pneumatic piston engine of the kind employed here is incredibly simple. Air is stored in the Airstream’s three tanks at 3,626psi and fed into the engine at 363psi, where it expands, pushing the piston down. That pistons’s return path exhausts the air through a valve, just like in your gasoline-powered motorcycle. (more…)
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Flotspotting: Bike Bad-assery, Part 3: Saline Airstream
Western Digital announces the availability of the 4TB WD Black, a hard drive that spins at 7,200rpm and costs $340. [Read more] 
Mephistophocles writes “Ever since the beginning of Operation Pillar of Defense, hackers have been working overtime to strike a blow against the Israeli government’s computer systems, Finance Minister Yuval Steinitz said Sunday. No fewer than 44 million attacks have been recorded since the operation began five days ago — with nearly all of them failing, thanks to the recent strengthening of computer defense systems in Israel. Speaking at a special press conference at the Government Computing Center in Jerusalem about the cyber war against Israel that has accompanied Hamas’s rocket attacks, Steinitz said that hackers ‘are trying to disable the symbols of Israeli sovereignty, to enter web sites and install anti-Israel content, thus compromising information and data and damaging the government’s ability to serve the public.’ Most of the attacks, he said, were against government sites, like the Prime Minister’s Office site, and security-related sites, such as that of the Home Front Command, the body charged with informing Israelis on how to protect themselves in the event of an attack. Out of those 44 million-plus attacks on government and defense related sites, said Steinitz, only one succeeded – partially. One site, which he did not name, was ‘wobbly for a few minutes,’ but quickly recovered. Even though the government has been successful in warding off hack attacks, Steinitz said that government sites were fully backed up and mirrored, meaning that they could be replaced by a duplicate site instantly if the original site were compromised.” Read more of this story at Slashdot. 
