How Long Can the ISS Last?
Posted by News Fetcher on September 21 '13 at 03:15 AM
By timothy from Slashdot's delaying-the-heat-death-of-this-part-of-the-universe department
R3d M3rcury writes with the story that "NASA and Boeing, along with other nations, are studying the feasibility of keeping the International Space Station in orbit until 2020
and possibly until 2028 — the 30 year anniversary of the launch of the first module." From the article: "To assess the long-term structural health of the station, Boeing engineers developed detailed computer models based on NASA's projected use -- the expected stresses caused by future dockings, reboosts, crew activity and thermal cycles -- and combined that with actual data from on-board accelerometers and strain gauges. ... "What we're looking at is theoretical crack growth," Pamela McVeigh, the engineer in charge of the Boeing structural analysis in Houston, told CBS News. "So the failure mode would be you'd have a crack beginning, probably (at) a bolt hole, and the crack would grow to another edge. So you'd lose like a flange on a C-beam, or an I-beam. The stiffness of your structure would then change, the bolt hole you that you were growing the crack out of, now that bolt wouldn't be effective."Read Replies (0)
By timothy from Slashdot's sometimes-they-come-back department
Taco Cowboy writes "'NASA is calling off attempts to find its Deep Impact comet probe after a suspected software glitch shut down radio communications in August, officials said on Friday.' Last month, engineers lost contact with Deep Impact and unsuccessfully tried to regain communications. The cause of the failure was unknown, but NASA suspects the spacecraft lost control, causing its antenna and solar panels to be pointed in the wrong direction. NASA had hoped Deep Impact would play a key role in observations of the approaching Comet ISON, a suspected first-time visitor to the inner solar system that was discovered in September 2012 by two Russian astronomers. The comet is heading toward a close encounter with the sun in November, a brush that it may not survive."
Deep Impact has had a pretty good run, though: from its original mission to launch a copper slug at a comet
(hence the name), to looking for Earth-sized planets
.Read Replies (0)
By Soulskill from Slashdot's hit-your-back-button-before-you-feel-like-a-jerk department
Presto Vivace sends in this story at Slate:"If you are reading this on a smartphone, then you are probably holding in your palm the conflict minerals that have sent the biggest manufacturing trade group in the U.S. into a court battle with the Securities and Exchange Commission. At stake in this battle between the National Association of Manufacturers and the government is whether consumers will know the potentially blood-soaked origins of the products they use every day and who gets to craft rules for multinational corporations—Congress or the business itself. ... These minerals are tantalum (used in cellphones, DVD players, laptops, hard drives, and gaming devices), tungsten, tin, and gold, if they are mined in the Democratic Republic of Congo and surrounding countries including Rwanda, where the mineral trade has fueled bloody conflicts. The rule requiring disclosure of conflict minerals will go into effect in 2014. Congress included it in Dodd-Frank out of concern for what is known as the “resource curse”—the phenomenon wherein poor counties with the greatest natural resources end up with the most corrupt and repressive governments. The money earned from selling the natural resources props up these harsh regimes and funds violence against their citizens and neighbors."Read Replies (0)
By Soulskill from Slashdot's lots-going-on-in-that-headline department
An anonymous reader writes "Last year, sci-fi author Neal Stephenson and a team of game developers set out to make video game swordfighting awesome. They set up a Kickstarter campaign to fund the creation of hardware and software tech that would make replace console controllers with something more realistic. Now, production on that tech and the game in which they showcase it has been halted. In an update on the Kickstarter page, Stephenson explains how they've sought other investments without success. The project is 'on pause,' and the team asks for patience. He says, 'The overall climate in the industry has become risk-averse to a degree that is difficult to appreciate until you've seen it. It is especially bemusing to CLANG team members who, by cheerfully foregoing other opportunities so that they could associate themselves with a startup in the swordfighting space, have already shown an attitude to career, financial, and reputational risk normally associated with the cast members of Jackass. To a game publisher crouched in a fetal position under a blanket, CLANG seems extra worrisome because it is coupled to a new hardware controller.'"Read Replies (0)