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  #26  
قديم 20-06-2008, 10:10 PM
اخبار مصر موتورز اخبار مصر موتورز غير متواجد حالياً
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من انا؟: إدارة مصرموتورز
 
تاريخ التسجيل: Jun 2008
الموقع: مصر
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Hurry Up and Wait for Clean Jet Fuel

The commercial-aviation industry scrambles to find alternatives to jet fuel, which is hitting record prices. Algal fuels are promising, but so far from viability that the industry is looking at quicker -- and dirtier -- alternatives to petroleum, like tar sands.






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  #27  
قديم 23-06-2008, 07:34 AM
اخبار مصر موتورز اخبار مصر موتورز غير متواجد حالياً
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من انا؟: إدارة مصرموتورز
 
تاريخ التسجيل: Jun 2008
الموقع: مصر
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Chrysler Brings 'Infobahn' to Autobahn

Chrysler wants to turn your car into a rolling WiFi hotspot where you check your Facebook profile, upload pictures to Flickr, and eventually be part of a nationwide traffic-control network.



The UConnect Web system Chrysler will unveil Thursday -- and introduce next year -- marks the start of the dot-car era and puts Chrysler in front of BMW in their race to bring wireless internet access to your dashboard. Most of the other automakers, not to mention Microsoft, are right behind them, and there's a push to bring some standards to the hardware.



"It's something everyone's looking at," says Aaron Bragman, an auto-industry analyst at Global Insight. The rush is fueled by the runaway success of Sync, Ford's hands-free iPod and cellphone system. "It's very popular, and it drives a lot of sales," Bragman says.



Sales are something Chrysler desperately needs, and it hopes that filling its cars with gadgets will lure buyers. Among the toys it's showing off next week are rear-seat swivel screens, blind-spot cameras and something it calls "rear cross-path sensing."



But UConnect Web is the star of the show, and Chrysler's betting on it to make its cars appealing to millennials — the twenty-something buyers who've made Sync so successful. The company clearly wants to gain a reputation for high-tech cars.



"In today's market, Chrysler's mission is to bring innovation to market more quickly," Chrysler Vice President Frank Klegon says.



Chrysler says UConnect Web uses cellular and WiFi technology to provide "instant access" to the internet. Anyone in the car will be able to check e-mail, download music, play games and even upload photos from an SD card directly to Flickr. Chrysler says any wireless device and "all major gaming systems" will work with UConnect.



It remains to be seen which models will get UConnect and what it will cost. Chrysler says it will be competitive with laptop wireless cards, and customers won't be tied to long contracts.



It also remains to be seen what regulators might have to say about all those added distractions -- "How long before California bans it?" asks Bragman -- and whether consumers want them. Although car buyers love hands-free systems like Sync, nothing suggests they want to surf the web behind the wheel.



"There could be some opportunity there, but we constantly see that internet access in the car is pretty much at the end of the priorities for consumers," says Thilo Koslowki, an IT analyst with the tech research firm Gartner. "The car is not being seen as an internet-browsing platform."



Koslowski says automakers are "leapfrogging consumer demand" and should focus on making their cars compatible with iPhones, BlackBerrys and other devices. "I don't think the industry is looking at it from that perspective," he says. "Right now most of the emphasis is on replicating what you do at home on your desktop or laptop."



But the drive to bring connectivity to cars is about more than Twittering from the road, and the dot-car era won't get rolling until the Intelligent Transportation Systems is sorted out, says Egil Juliussen at Telematics Research Group. The idea -- which has been promised for years -- is to have cars communicate wirelessly with each other and with the road to increase safety, relieve congestion and manage traffic. Among other things, such a system would allow cars to track everything around them and respond accordingly to avoid collisions. It could also provide real-time traffic information -- so drivers could avoid backups -- and create a national system for paying tolls electronically.








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  #28  
قديم 23-06-2008, 11:16 PM
اخبار مصر موتورز اخبار مصر موتورز غير متواجد حالياً
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من انا؟: إدارة مصرموتورز
 
تاريخ التسجيل: Jun 2008
الموقع: مصر
المشاركات: 18,261
اخبار مصر موتورز is a name known to allاخبار مصر موتورز is a name known to allاخبار مصر موتورز is a name known to allاخبار مصر موتورز is a name known to allاخبار مصر موتورز is a name known to allاخبار مصر موتورز is a name known to all
Submit Your Best UFO Pics

Police in Britain say a flying saucer almost hit their helicopter, which makes us wonder -- who else out there has had a close encounter with a UFO? Submit your favorite pics.






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  #29  
قديم 24-06-2008, 11:14 PM
اخبار مصر موتورز اخبار مصر موتورز غير متواجد حالياً
مراسل مصر موتورز
من انا؟: إدارة مصرموتورز
 
تاريخ التسجيل: Jun 2008
الموقع: مصر
المشاركات: 18,261
اخبار مصر موتورز is a name known to allاخبار مصر موتورز is a name known to allاخبار مصر موتورز is a name known to allاخبار مصر موتورز is a name known to allاخبار مصر موتورز is a name known to allاخبار مصر موتورز is a name known to all
Hackers Crack London Tube's Ticketing System

Dutch researchers ride the Underground for free after hacking the smartcards riders use to pay their fares. The hack has huge implications because similar cards provide access to thousands of government buildings, hospitals and schools throughout Britain.






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  #30  
قديم 24-06-2008, 11:52 PM
اخبار مصر موتورز اخبار مصر موتورز غير متواجد حالياً
مراسل مصر موتورز
من انا؟: إدارة مصرموتورز
 
تاريخ التسجيل: Jun 2008
الموقع: مصر
المشاركات: 18,261
اخبار مصر موتورز is a name known to allاخبار مصر موتورز is a name known to allاخبار مصر موتورز is a name known to allاخبار مصر موتورز is a name known to allاخبار مصر موتورز is a name known to allاخبار مصر موتورز is a name known to all
Greener Jet Engine Could Reduce Aviation's Carbon Footprint

One of the biggest names in aviation has developed a jet engine that is more efficient, less polluting and cheaper to use than almost everything else in the sky, and it could revolutionize an industry facing skyrocketing fuel prices and mounting pressure to clean up its act.



Pratt & Whitney has spent the better part of two decades developing the geared turbofan engine that burns 12 to 15 percent less fuel than other jet engines and cuts carbon dioxide emissions by 1,500 tons per plane per year. It's being called one of the most exciting developments commercial aviation has seen in years, and it was a hot topic at the Eco-Aviation Conference, where the aviation industry spent two days charting the course to a greener future.



"It's technology like that geared turbofan that's going to drive fuel efficiency forward for this industry in the short and medium term," says Earnest Arvi of the Arvi Group. "Alternative fuels show great potential, but they're decades away."



Pratt & Whitney was just one of the heavy hitters at the conference, an unprecedented gathering that underscored the severity of the issues the industry faces. With airline passenger growth rates and aircraft emissions expected to double by 2020 and 2030, respectively, the pressure is on to address those problems quickly. The conference saw a lot of talk -- and a little green-washing -- about developing alternative fuels to replace jet fuel, easing airport pollution, and building greener aircraft to replace the industry's aging fleet. Nearly 1,000 planes flown by domestic carriers will be more than a quarter of a century old by 2015, and Boeing officials have said that more than 10,400 new planes will be needed in the coming decades and making them as green as possible will go a long way toward reducing commercial aviation's carbon footprint.



That's why Pratt & Whitney has so much to brag about with its geared turbofan, which significantly advances jet-engine technology. Current jet engines have fans that suck air into the combustion chamber, where it is compressed, mixed with fuel, and ignited. Then it's blown through a turbine, generating thrust. It works, but it's inefficient because the fan is connected to the engine and turns at the same speed as the turbine. Fans work best at low speed, while turbines work best at high speed.



Pratt & Whitney solved that problem with a gearbox that lets the fan and turbine spin independently. The fan is larger and it spins at one-third the speed of the turbine, creating a quieter, more powerful engine the company says requires less fuel, emits less C02 and costs 30 percent less to maintain. Pratt & Whitney has been torture-testing the engines, and its engineers have simulated more than 40,000 takeoffs and landings.



The company's VP of Technology and Environment, Alan Epstein, says the engine will not only cut CO2 emissions, but will also reduce nitrogen-oxide emissions, noise and -- ultimately -- ownership costs. "For the next generation of single-aisle aircraft, there's no question that engine performance will be key," he says. "Both economically and environmentally, this engine will deliver significant benefits."



The industry seems to agree and is lining up behind the engine, which Pratt & Whitney expects to have in regular service by 2013. It's already slated for jets currently being developed by Mitsubishi and Bombardier.



Pratt & Whitney isn't the only firm developing greener aircraft. Airbus is dabbling in alternative fuels and researching ways of recycling more than 6,000 planes slated for retirement during the next 20 years. Boeing is dabbling with hydrogen fuel cells and investing in algal fuels while pushing lighter planes like its 787 Dreamliner. Boeing says composite materials make up nearly 50 percent of the plane, which can carry as many as 330 people, making it far lighter than other planes its size. It is 20 percent more fuel-efficient and produces 20 percent fewer emissions than similarly sized aircraft, company officials say. Boeing is betting composite construction will bring huge improvements in fuel economy and emissions to commercial aviation.



Further gains could come from improving the nation's outdated air traffic control system, something nearly everyone at the conference said must happen. The current system is based on radar technology that dates to World War II, and plans to replace it with a satellite system known as NextGen are at a standstill while FAA reauthorization is stalled in Congress. But the industry has several other ideas, from allowing flights through military airspace to widespread adoption of a quieter, more efficient landing technique called continuous descent approach. Industry experts say adopting such steps could significantly reduce fuel consumptions and delays. The International Air Traffic Association says cutting just one minute from every commercial flight would save more than 1.9 million tons of fuel and 6.3 million tons of CO2 annually.



The air travel industry has taken a lot of heat for being slow to address its environmental impact, and some say parts of the eco-conference were just slick PR. But even some critics say the fact the industry is discussing environmental stewardship shows it's finally getting serious about the issue -- if only because doing so is in its best interest. "Climate change could mean fewer coastal vacation destinations, inaccessible airports and a general economic malaise that cuts travel spending," says Liz Barratt-Brown of the Natural Resources Defense Council. "Looked at in that context, you could argue that the aviation sector has the most to lose from global warming."








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