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Sunday, April 26, 2015

NASA May Have Accidentally Created a Warp Field

As reported by Mysterious Universe: “Star Trek” introduced the world outside of rocket science circles to the concept of warp drive – the propulsion system that allowed the starship Enterprise to travel faster than the speed of light. Warp speed is the holy grail that would let us explore the universe safely surrounded and protected by a space-distorting warp field. After watching the SpaceX rocket recently just try to land on a platform, you’d think this ability is years if not decades away. Yet the buzz on space websites is that NASA may have accidentally discovered a way to create a warp field. Wait, what?

To get around the theory of relativity, physicist Miguel Alcubierre came up with the concept of a bubble of spacetime which travels faster than the speed of light while the ship inside of it is stationary. The bubble contracts spacetime in front of the ship and expands it behind it. The warp drive would look like a football inside a flat ring. The tremendous amount of energy it would need made this idea prohibitive until Harold “Sonny” White of NASA’s Johnson Space Center calculated that making the ring into a donut shape would significant reduce the energy needs.

Meanwhile, in the lab, NASA and other space programs were working on prototypes of the EmDrive or RF resonant cavity thruster invented by British aerospace engineer Roger J. Shawyer. This propulsion device uses a magnetron to produce microwaves for thrust, has no moving parts and needs no reaction mass for fuel. In 2014, Johnson Space Center claimed to have developed its own low-power EmDrive.

Which brings us to today’s warp field buzz. Posts on NASASpaceFlight.com, a website devoted to the engineering side of space news, say that NASA has a tool to measure variances in the path-time of light. When lasers were fired through the EmDrive’s resonance chamber, it measured significant variances and, more importantly, found that some of the beams appeared to travel faster than the speed of light. If that’s true, it would mean that the EmDrive is producing a warp field or bubble. Here’s a comment from a space forum following the tests.

"That’s the big surprise. This signature (the interference pattern) on the EmDrive looks just like what a warp bubble looks like. And the math behind the warp bubble apparently matches the interference pattern found in the EmDrive."

Another surprise is that the discovery was accidental, as this comment attests:

"Seems to have been an accidental connection. They were wondering where this “thrust” might be coming from. One scientists proposed that maybe it’s a warp of the spacetime foam, which is causing the thrust."

What happens next? To prove that the warp effect was not caused by atmospheric heating, the test will be replicated in a vacuum. If the same results are achieved, it seems to mean that the EmDrive is producing a warp field, which could ultimately lead to the development of a warp drive.

What does that mean? I’ll let the physicists, propulsion experts and space scientists answer that. All I know is, it will cause a lot of wet seats at the next Star Trek convention.

Saturday, April 25, 2015

Google Works To Improve Spam Detection Systems On Google Maps After Obscene Edits

As reported by TechCrunch: Google says it’s working to improve its spam-detection systems in its Google Maps platform after yet another prank allowed a user to upload an inappropriate image to Google Maps. This most recent image, which showed the Google Android mascot urinating on the Apple logo in the style of those unfortunate Calvin and Hobbes bootleg decals, was apparently uploaded by a Map Maker user “nitricboy” yesterday, according to his user profile page on Map Maker.

The user, apparently, enjoyed sneaking in bad edits to Google Maps – he also was able to get a Skype logo through, as well as a happy face, as contributors on Hacker News have since pointed out.

Map Maker, for those unfamiliar, is a years-old online tool that allows users worldwide the ability to upload new data to Google’s online mapping service – particularly in less-developed regions where detailed local maps had yet to become available. The idea is that users would be able to add details to maps that Google didn’t already have – like new roads or points of interest.
In the case of the recent “hack,” the user submitted the image as a “park,” for example, located on the outskirts of Rawalpindi, a Pakistani city 10 miles southwest of Islamabad.

The Map Maker platform, like many that rely on the power of crowdsourcing, lets anyone submit and edit. These edits are then approved by a community moderation process. However, it appears that it’s fairly simple for users to create additional accounts in order to “approve” their obscene edits. Or, in other cases, users approve the edits because they’re in on the joke or just want to be.

That’s led to some problems for Google Maps in recent days, it seems.

In addition to Map Maker, users have found other ways to hack their pranks onto Google Maps.

For instance, earlier this month, someone uploaded a new business listing located in the White House dubbed as “Edwards Snow Den.” (Get it?). That particular joke originated as a verified business listing on Google. The prankster realized that you could change the name and location of a business listing after its creation, and adjusted it to read “1600 Pennsylvania Avenue.”

The extensibility of Google Maps’ platform has been a longtime advantage for the company, whose maps are believed by many to be the best on the market. And Google notes today that contributed content from its user community as well as their edits are generally accurate and have positive and beneficial impact on their local community and businesses.

That being said, the company admits it needs to find ways to improve how it detects, prevents and handles bad edits. “Handling spam is a complex issue and we’re continuously working on ways to improve our systems, including new ways of preventing, detecting and taking down incorrect edits,” a spokesperson said regarding the new hack, which has now been broadly covered by major news outlets, some of whom even speculated it was a Google “Easter Egg.”

“We’re sorry for this inappropriate user-created content; we’re working to remove it quickly,” the Google spokesperson added.

Currently, the company relies on a combination of systems to detect and prevent map spam, including community flagging. (That’s where other users can flag content as being inappropriate or inaccurate.) But this is only one of many tools used to stop spam.

However, when bad edits fall through the cracks and actually make it onto the maps, Google then uses its understanding of what happened in order to integrate new reinforcements into its system.

But it’s unclear specifically what action Google will take to lock down Maps in the face of future pranksters. Especially because it seems like other users with a good history of edits helped “approve” these changes, which would have made the edit difficult for bots to catch. After all, the power of good content comes from the strength of the online community – and that will require more effort than an algorithm tweak to fix.

Friday, April 24, 2015

Progress Eagle Concept Imagines Zero-Emissions Air Travel for 800 Passengers

As reported by SlashGear: We’ve seen a number of vehicular concepts, but some have turned their sights to the sky and envisioned what the future of traveling amongst the clouds might look like. Previously a futuristic design for the AWWA Sky Whale concept was introduced, and now its designer — Oscar Vinals — has updated his own ambitions, creating a new concept called the AWWA-QG Progress Eagle. It’s a triple-decker zero-emissions plane, and were it to be made it would be able to carry around 800 passengers.

The designer imagines his concept could become a reality in 2030 or thereabouts, and rather than using traditional fuel, it would utilize half a dozen hydrogen engines. A rear engine would also serve as a wind turbine, and there would be solar panels integrated into the window for helping reclaim some energy. As with zero-emissions vehicles, it would also be nearly silent.
Because the plane is so large, the designer also envisions it having another class superseding first class, and it would be called “pilot class”. The pilot class would give the passengers there panoramic views of the sky around them, and could be complemented by train-like areas on the plane to buy food and drinks, and perhaps even private rooms.

According to the designer, in the present age we have 40-percent of the technology what would be required to build this plane, hence his 2030 figure. It would need, among other things, quantum solar cells, micro radio wave harvesters, nanowires, and more to become reality.

Thursday, April 23, 2015

Tesla Wants to Power Wal-Mart

As reported by Bloomberg Business: Tesla Motors Inc. is signing up big customers like Wal-Mart and Cargill, accelerating efforts to become a leader in energy storage -- a new market that’s poised to boost sales and profit at the electric vehicle pioneer.

Next week, Tesla will make a deeper push beyond the car business when it unveils batteries for homes and utilities.

A review of California’s Self Generation Incentive Program, or SGIP, shows Tesla has ambitions to sell batteries for a range of commercial uses, from powering its factories to reducing electric bills at schools and wineries. Tesla is on track to reap as much as $65 million in SGIP rebates, which are designed to encourage investment in alternative energy.

“Tesla has been able to install more than 100 projects, really without anyone noticing,” said Andrea James, an analyst with Dougherty & Co. She said Tesla’s energy storage business could be worth as much as $70 to Tesla’s stock. The shares rose 5.3 percent to $220.45 at 2:44 p.m. New York time after climbing as much as 6 percent for the biggest intraday gain in more than two weeks.

As a builder of electric cars, the company has a vested interest in making the electric grid as clean as possible. Customers typically buy the batteries to store energy from solar panels, using them when electricity from the grid is most expensive or the sun isn’t shining. With Tesla’s gigafactory for battery production under construction in Nevada, storage products could serve as a secondary revenue stream for the company, which is looking to diversify its product lineup.

As part of a pilot program with sister company SolarCity, Tesla has installed batteries at about 300 California homes equipped with solar panels. Wal-Mart Stores Inc., which has a relationship with SolarCity, has Tesla batteries installed at 11 California stores; Cargill Inc. plans a one-megawatt system for its animal-processing plant in Fresno.

Home Battery
The SGIP database provides a snapshot of Tesla’s activities in its home state and is by no means a complete picture of the company’s storage ambitions.

But Chief Executive Officer Elon Musk has been dropping hints for weeks, and yesterday the company told investors and analysts in an e-mail that Tesla will announce the home battery and a “very large” utility-scale battery on April 30. In the e-mail, Jeffrey Evanson, Tesla’s chief of investor relations, said the company “will explain the advantages of our solutions and why past battery options were not compelling.”

Tesla spokeswoman Khobi Brooklyn said the company would share more information next week.

Thanks to state incentives and advances in battery chemistry, storage is a hot industry. By 2019, total U.S. sales will reach $1.5 billion, about 11 times as much as in 2014, according to a March report from GTM Research.

Renewable Grid
“Energy storage on the grid will grow rapidly in combination with renewables,” Tesla Chief Technology Officer JB Straubel said last month at the Vail Global Energy Forum. “Eventually you’re going to have a 100 percent battery electric vehicle fleet, working in tandem with an almost 100 percent renewable electric utility grid full of solar and wind.”

For companies looking to break into California’s storage market, the first stop is SGIP. Founded during an energy crisis in 2001 and funded by ratepayers, the program has a budget of $83 million and covers as much as 60 percent of a project’s costs. All proposals go through a technical review and are supposed to be connected to the grid within two years. Applicants collect rebates once projects are completed.

Wine Battery
While companies like Coda Energy, Green Charge Networks and Stem have also applied for SGIP funds, Tesla accounts for almost half of all storage applications, Bloomberg New Energy Finance said in an April 2 report published for clients. BNEF also said Tesla accounts for about 70 percent of SGIP storage projects connected to California’s grid.

Jackson Family Wines, based in Santa Rosa, has a new partnership with Tesla involving battery storage and several vehicle charging stations, according to the February issue of Wine Business Monthly. The winery declined to comment.

Mack Wycoff, Wal-Mart’s senior manager for renewable energy and emissions, said the company is intrigued by energy storage. “Instead of pulling electricity from the grid, you discharge it from the battery,” he said. “Ideally you know when your period of peak demand is, and you discharge it then.”

Mike Martin, Cargill’s director of communications, declined to provide details about how the company plans to use Tesla batteries at the Fresno plant. The 200,000-square-foot facility, one of the largest of its type in California, produces nearly 400 million pounds of beef each year.

Janet Dixon is director of facilities at the Temecula Valley Unified School District in southern California, which plans to install solar panels at 20 of its 28 schools this summer. Dixon said that SolarCity is the solar provider, and five of the facilities will have Tesla batteries.

“We spend roughly $3 million a year on electricity, and most of that is lighting and air conditioning,” said Dixon. “We are going solar to reduce our overall costs and the battery storage should help us manage our peak demand.”

Wednesday, April 22, 2015

SpaceX Targets May 5th for Dragon Pad-Abort Test

As reported by Florida Today: SpaceX as soon as May 5 will shoot a Dragon capsule from a Cape Canaveral in a test of a key safety system needed for astronaut launches in the next two or three years.

The so-called "pad abort" test will launch a prototype crew spacecraft from a stand at Cape Canaveral Air Force Station's Launch Complex 40, simulating a launch pad emergency.

The Dragon will fire SuperDraco thrusters designed to enable the capsule and its crew to escape from a rocket failing on the pad or during flight.

"The ability to abort from a launch or pad emergency and safely carry crew members out of harm's way is a critical element for NASA's next generation of crew spacecraft," NASA said in a statement.

The brief test plans to loft the unmanned capsule upward until it deploys parachutes and splashes down in the Atlantic Ocean.

NASA Television will provide live coverage of the test. NASA TV also will air a media briefing previewing the test with SpaceX and NASA representatives. 

The ability to abort from a launch or pad emergency and safely carry crew members out of harm's way is a critical element for NASA's next generation of crew spacecraft. SpaceX will perform the test under its Commercial Crew Integrated Capability (CCiCap) agreement with NASA, but can use the data gathered during the development flight as it continues on the path to certification. Under a separate Commercial Crew Transportation Capability (CCtCap) contract, NASA's Commercial Crew Program will certify SpaceX’s Crew Dragon, Falcon 9 rocket, ground and mission operations systems to fly crews to and from the International Space Station.

The Dragon capsule test unit will fire SuperDraco thrusters to blast off from a truss mimicking a Falcon 9 rocket on the launch pad, then deploy three main parachutes and splash down in the Atlantic Ocean approximately one mile offshore in the Atlantic Ocean.
The test rig includes a capsule with hundreds of sensors to measure pressures, loads, temperatures and other data during the flight test, which is expected to last about one minute.

SpaceX officials have said a crash test dummy is inside the capsule for the pad abort flight.

The human-rated Dragon capsule — a redesigned version of of SpaceX’s Dragon cargo craft — will ferry astronauts to and from the International Space Station beginning in 2017. NASA awarded SpaceX a contract worth up to $2.6 billion in September to complete development of the Crew Dragon spaceship and fly up to six operational crew rotation missions to the space station.

NASA also tapped Boeing to finish testing of its CST-100 space capsule, giving the space agency redundant means to transport astronauts into low Earth orbit and end U.S. reliance on Russian Soyuz capsules for the job.

The Crew Dragon spacecraft’s eight side-mounted SuperDraco thrusters each generate about 16,000 pounds of thrust to carry crews away from danger during launch. SpaceX says the engines can also slow down the capsule during landing, eventually allowing the craft to accomplish propulsive pinpoint touchdowns like a helicopter.


Dragon Opens for Business with New Science

From NASA blogsNASA astronauts Terry Virts and Scott Kelly opened the hatches and floated into the new SpaceX Dragon space freighter Saturday morning, beginning five weeks of cargo transfers. The sixth Dragon cargo mission for NASA’s Commercial Resupply Services contract delivered a wide variety of crew supplies and science gear to support dozens of new and ongoing microgravity experiments.

The crew unloaded new Rodent Research gear that will allow scientists to study the effects of microgravity on biological mechanisms in mice. Results may promote the development of new drugs tackling the effects of aging and disease on Earth.
A pair of new POLAR science freezers were unloaded from Dragon. The freezers store science samples at -80° C and allow the transport of those samples back to Earth.
Blood pressure checks and vision testing were on the schedule Monday as part of the Ocular Health study which observes the effects of long-term spaceflight on crew members. A trio of cosmonauts looked at cardiac activity in space and studied the radiation emitted from Russian spacecraft propulsion systems.

Tuesday, April 21, 2015

Chevrolet FNR Autonomous Car Concept

As reported by Cool Material: The automotive concept allows for considerable interpretation. Some concepts are only a short time away from production and some are much more. The Chevrolet FNR Concept is definitely the latter—it’s an imaginative hypothesis of what future vehicles could be. Making its grand introduction at Auto Shanghai, the FNR was also designed to commemorate Chevrolet’s ten year anniversary in China. The self-driving or autonomous FNR features “dragon-fly” doors, 180-degree swiveling front seats, and iris recognition for the driver. Turning each wheel is a magnetic and hubless electric motor, but don’t worry about plugging it in as wireless charging is standard.