Thursday, June 17, 2010

Best Sniper Rifle Ever

A good sniper can damage moral by taking out key personnel. They can stop a unit in its tracks. But for a good sniper a gun with an eagle sight, deadly impact and a monstrous fire power is essential. Today we have best Sniper Rifle of all times.




type sniper rifle
Place of origin United Kingdom
Service history
In service 1997 – present
Used by See Users
Wars Afghanistan War, Iraq War
Production history
Manufacturer Accuracy International
Specifications
Weight 6.5 kg (14.3 lb) (.300 Winchester Magnum)
6.9 kg (15.1 lb) (.338 Lapua Magnum)
with stock, bipod and empty magazine
Length 1200 mm (47.2 in) (.300 Win. Mag.)
1230 mm (48.4 in) (.338 Lapua Magnum)
Barrel length 660 mm (26 in) (.300 Win. Mag.)
686 mm (27 in) (.338 Lapua Magnum)
Cartridge .300 Winchester Magnum
.338 Lapua Magnum
Action Bolt-action
Effective range 1,100 metres (1,203 yd)
.300 Winchester Magnum[1]
1,400 metres (1,531 yd)
.338 Lapua Magnum[1]
Feed system 5-round detachable box magazine
Sights detachable aperture type iron sights
day or night optics

After Cell Phone Copies, China rolls out a Rolls-Royce Copy



Luxury British car maker Rolls-Royce is considering legal action after a Chinese company unveiled a prototype limousine that is a dead ringer for the Rolls-Royce Phantom and which would sell for about a fraction of the price.
Geely Automobile, one of China’s major independent car makers, launched its GE – which stand for “Geely Excellence” – at last week’s Shanghai Auto Show, and the sedan attracted much interest for its resemblance to the Rolls-Royce model.
The glossy black Geely GE, still a prototype, comes with some of the Phantom’s signature features, including the Grecian temple grille, down-sloping rear deck, and even a badge that looks like the iconic Rolls-Royce Spirit of Ecstasy winged mascot.
The GE also comes with a knock-off of the Rolls-Royce’s “starry-night” headliner – the interior roof detail above the passenger seat, which features hundreds of fibre-optic lights to give the impression of a star-spangled night sky.
“In one sense it’s quite complimentary, but we have to be protective of our brand image,” Rolls-Royce spokesman Andrew Ball told The News, a British newspaper based in Portsmouth. “We’re having a bit of a chat with our lawyers about where we could take it.”
On its website, Geely also says the GE is “reinventing the classic”, without saying which classic car it is reinventing.
Geely spokesman Zhang Xiaoshu told the AFP news agency that the GE was set to go on sale within three years, probably for about 1 million yuan ($200,000), which could be up to a sixth less than a Phantom, depending on Chinese taxes.
The GE has one key feature not found in the Phantom: the passenger compartment has just one seat, dubbed the throne. The front compartment seats two.
Zhang admitted that there were some similarities but insisted the GE was an original.
“As it were, they are actually different … people may feel they are the same at the first glance, but the details are certainly different,” he said.



ROLLS-ROYCE PHANTOM
BUILT: Goodwood, Sussex
PRICE: £250,000
ENGINE: Mammoth 6.75litre V12
LENGTH: 19ft 2 inches
TOP SPEED: Artificially restricted to 150mph / 0-62mph: 5.7 seconds
FEATURES:
Original ‘Grecian-style’ large grille. Spirit of Ecstasy mascot, also dubbed ‘The Flying Lady’. Romantic ’starlight Headliner’ in roof to emulate night sky. Drip dry umbrellas hidden in rear doors. 9 standard wood veneers. 44,000 different exterior colours.
Cashmere blend headliner. Lambswool rugs Special soft leather interior


THE GEELY EXCELLENCE
BUILT: Zhejiang, China
PRICE: circa £30,000
ENGINE: 3.5litre V6
LENGTH: 17ft 6 inches.
TOP SPEED: 110mph (estimated) 0-62mph: 10 seconds (estimate)
FEATURES:
Single rear ‘throne’. Pastiche ‘Grecian-style’ large grille. Flying Lady-style mascot
Romantic ’starlight Headliner’ in roof to emulate night sky. Glass interior divider
Pure wool carpet. ‘Six star’ safety. Cigar store. Refrigerator. Wine cabinet

Wednesday, June 16, 2010

World’s Fastest Hypersonic ScramJet to be Tested by NASA this Month

In the last week of May, thousands of square miles of airspace above the Pacific Ocean will be cleared to make way for a skinny, shark-nosed aircraft called the X-51. The 4-metre-long prototype will drop from beneath the wing of a bomber and attempt to become the first scramjet to punch through the atmosphere at hypersonic speeds for minutes, not seconds.
Like an airliner’s jet engines, supersonic combustion ramjets – or scramjets – work by compressing air enough to ignite fuel which drives air out of the back of the engine to provide thrust. It is designed to work at hypersonic speeds – above about 5 times the speed of sound.
A handful of experimental scramjets have flown successfully, reaching speeds as high as Mach 10, but not for long. “No one has successfully flown a vehicle of this nature for more than a few seconds,” says Joe Vogel, X-51 programme manager at Boeing. “Our goal is about 300 seconds of powered flight.”
The project is a collaboration between several US military agencies and private firms like Boeing that have ideas about how to solve the problems with heat and manoeuvrability that have limited previous scramjet flights.


At the test’s top speed of Mach 6, the temperature of X-51’s nose will reach 1480 °C, says Vogel. To handle the heat, the vehicle’s fuel is piped through tubes around the surface of the engine. Not only does that draw off heat to prevent the engine from melting, it also helps warm the fuel to the temperature needed to ignite it.
The US air force hopes to conduct as many as four tests of the X-51 this year. In each, a vehicle will be dropped from beneath a B-52 bomber some 15 kilometres above the Pacific Ocean. A solid rocket booster at the back of the vehicle will ignite and accelerate the X-51 to 4.7 times the speed of sound.
That’s fast enough for the craft’s scramjet to kick in. The booster will fall away to let the X-51 fly under its own power until it runs out of fuel. “If we could recover it, the engine would basically be pristine and reusable,” Vogel says. Previous scramjet tests have ended with the craft burning up in the atmosphere.
Short hop
The last US hypersonic scramjet to fly successfully was NASA’s X-43, a hydrogen-powered engine that flew twice in 2004, managing only 10 seconds of powered flight. Unlike its predecessor, the X-51’s engine uses novel active cooling systems and uses standard jet fuel.
Scramjets are touted as a cheap way to get most of the way into space because they don’t require the bulky oxidisers needed to get conventional rockets into orbit. The X-51 is likely to advance that dream, says Mark Lewis of the University of Maryland in College Park. “It solves a lot of the practical issues you need to solve in order to make a real space vehicle.”
Significant hurdles remain, though, not least that to reach orbit a scramjet would have to operate at roughly 25 times the speed of sound. In the short term, the X-51 is likely to pave the way for fast reconnaissance planes and mid-range missiles, Lewis says.
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Next Generation iPhone Got Some Treatment in Vietnam

Recently, Apple is failing badly to keep their products hidden from public and now more often we see an Apple product out in public before any official launch. Apple that is well known for keeping its products secret is struggling at the moment to control the leak of next generation iPhone. I was absolutely shocked when i saw the pics and videos of prototype of iPhone 4G on taoviet.vn