57793425
submission
dangle writes:
The Exposition Park museum in LA is working to rebuild the Endeavor launch stack, a display that will take thousands of pieces to complete due to parts that are scattered at NASA facilities, museums and other places across the U.S. Most are one of a kind and impossible to replicate. Dennis Jenkins, who spent his entire 30-plus year career sending the shuttles into space, is playing a key role in locating essential parts using his own and his colleagues' institutional memory. Employed by NASA contractor Martin Marietta, he helped write the software used in loading and controlling the liquid oxygen needed to launch the 2,250-ton shuttle assembly into low Earth orbit. Now, with the program part of a bygone era of exploration, the 57-year-old works for the California Science Center, helping officials figure out how to rebuild Endeavour.
34778267
submission
dangle writes:
BAE Systems has developed a positioning solution that it claims will work even when GPS is unavailable. Its strategy is to use the collection of radio frequency signals from TV, radio and cellphone masts, even WiFi routers, to deduce a position.
BAE's answer is dubbed Navigation via Signals of Opportunity (NAVSOP). It interrogates the airwaves for the ID and signal strength of local digital TV and radio signals, plus air traffic control radars, with finer grained adjustments coming from cellphone masts and WiFi routers. In any given area, the TV, radio, cellphone and radar signals tend to be at constant frequencies and power levels as they are are heavily regulated — so positions could be calculated from them. "The real beauty of NAVSOP is that the infrastructure required to make it work is already in place," says a BAE spokesman — and "software defined radio" microchips that run NAVSOP routines can easily be integrated into existing satnavs. The firm believes the technology could also work in urban concrete canyons where GPS signals cannot currently reach.
30689659
submission
dangle writes:
F.A.T. Lab and Sy-Lab have officially released their Free Universal Construction Kit, allowing builders to freely interconnect parts from Lego, K'Nex, Fischertechnik and other common building sets. ZomeTool and Zoob patterns will be available after related patents expire. The makers have also spent considerable effort investigating and anticipating legal complaints from manufacturers, using an Inverse Think of The Children Argument:
Some may express concern that the Free Universal Construction Kit infringes such corporate prerogatives as copyright, design right, trade dress, trademarks or patents of the supported toy systems. We encourage those eager to enforce these rights to please think of the children — and we assert that the home printing of the Free Universal Construction Kit constitutes protected fair use.
12186346
submission
dangle writes:
Voyager 2's flight data system, which formats information before beaming it back to Earth, has experienced a hiccup that has altered the pattern in which it sends updates home, preventing mission managers from decoding the science data beamed to Earth from Voyager 2. The spacecraft, which is currently 8.6 billion miles (13.8 billion km) from Earth, is apparently still in overall good health, according to the latest engineering data received on May 1. "Voyager 2's initial mission was a four-year journey to Saturn, but it is still returning data 33 years later," said Voyager project scientist Ed Stone of the California Institute of Technology in Pasadena. "It has already given us remarkable views of Uranus and Neptune, planets we had never seen close-up before. We will know soon what it will take for it to continue its epic journey of discovery." The space probe and its twin Voyager 1 are flying through the bubble-like heliosphere, created by the sun, which surrounds our solar system.
5769221
submission
dangle writes:
More than 20 million other smartphone users are on the AT&T network, but other phones do not drain the network the way the nine million iPhones users do. Because the average iPhone owner can use 10 times the network capacity used by the average smartphone user, dropped calls, spotty service, delayed text and voice messages and glacial download speeds are the result as AT&T's cellular network strains to meet the demand. AT&T says that the majority of the nearly $18 billion it will spend this year on its networks will be diverted into upgrades and expansions to meet the surging demands on the 3G network. The company intends to erect an additional 2,100 cell towers to fill out patchy coverage, upgrade existing cell sites by adding fiber optic connectivity to deliver data faster and add other technology to provide stronger cell signals. http://www.nytimes.com/2009/09/03/technology/companies/03att.html?hp
