Astronaut Reid Wiseman on the First Spacewalk of Expedition 41
NASA – On Oct. 7, NASA astronaut Reid Wiseman (pictured here) and European Space Agency astronaut Alexander Gerst completed the first of three spacewalks for the Expedition 41 crew aboard the International Space Station. The spacewalkers worked outside the space station’s Quest airlock for 6 hours and 13 minutes, relocating a failed cooling pump to external stowage and installing gear that provides back up power to external robotics equipment. Flight Engineer Barry Wilmore of NASA operated the Canadian robotic arm, maneuvered Gerst during the course of the spacewalk and served as the spacewalk coordinator.
A second U.S. spacewalk is set for Oct. 15. Wilmore will don a U.S. spacesuit and follow Wiseman outside the Quest airlock for a 6-1/2 hour excursion. Gerst will serve as the spacewalk choreographer. The goal of the excursion is to replace a failed voltage regulator component on the starboard truss of the station. They will also move external camera equipment in advance of a major reconfiguration of station modules next year for the arrival of new docking adapters for commercial crew vehicles.
Image Credit: NASA/ESA/Alexander Gerst
A Short Flight for a Jet, A Giant Leap for a Jet Engine
GE – Over the last several weeks, crews at GE Aviation’s flight test base in Victorville, CA, at the edge of the Mojave Desert, installed a next-generation jet engine with ceramic components and 3-D printed parts to the wing of a modified Boeing 747, and readied it for its maiden flight.
The engine, called LEAP, successfully took to the skies on Monday (Oct 6).
There are three versions of the jet engine: the LEAP-1A for the new Airbus 320neo passenger jets, the LEAP-1B for Boeing’s 737MAX aircraft, and the LEAP-1C for China’s COMAC C919 planes.
The LEAP is the bestselling family of jet engines in GE history. CFM has received more than $100 billion in orders (U.S. list price) from airlines like United, Air Asia, American Airlines and easyJet. They will use them on single-aisle aircraft, the fastest growing market in commercial aviation. more> http://tinyurl.com/qzqsbqj
Posted in Business, Economy, Energy & emissions, Science, Technology, Transportation
Tagged Aviation, Business, Efficiency, GE, Jet engine, LEAP, Technology
R&D – OLEDs (organic light emitting diodes) are the latest and greatest in television technology, allowing screens to be extremely thin and even curved, with little blurring of moving objects and a wider range of viewing angles. In these “RGB” displays, each pixel contains red, green and blue modules that shine at different relative brightness to produce any color desired.
But not all OLEDs are created equal.
Phosphorescent OLEDs, also known as PHOLEDs, produce light through a mechanism that is four times more efficient than fluorescent OLEDs. Green and red PHOLEDs are already used in these new TVs—as well as in Samsung and LG smartphones—but the blues are fluorescent. more> http://tinyurl.com/ng4l8uk
Posted in Business, Economic development, Economy, Education, Energy & emissions, Media, Nature, Product, Science, Technology
Tagged Business improvement, Electronics, Manufacturing, OLED, organic light emitting diode, PHOLED, Technology, United States
Bloomberg – Money and payment systems, the underpinnings of all financial activity, are still traditional in one respect: They rely on central third parties — banks — to record and vouch for transactions.
Digital currencies dispense with this. They create a decentralized record — a “distributed ledger” — which allows buyers and sellers to interact directly. more> http://tinyurl.com/mx4unrg
Posted in Banking, Broadband, Business, Economic development, Economy, Education, Net, Regulations, telecom
Tagged Banking reform, Business improvement, Capital, Credit, Currency, Government, Internet, Regulations, Technology, United States
Fall Colors Arriving
NASA – A few days after autumn showed up on the calendar in the Northern Hemisphere, it showed up on the landscape of North America. The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite captured this view of fall colors around the Great Lakes on Sept. 26, 2014.
The changing of leaf color in temperate forests involves several causes and reactions, but the dominant factors are sunlight and heat. Since temperatures tend to drop sooner and sunlight fades faster at higher latitudes, the progression of fall color changes tends to move from north to south across North America from mid-September through mid-November.
In late summer and autumn, tree and plant leaves produce less chlorophyll, the green pigment that harvests sunlight for plants to convert water and carbon dioxide into sugars. The subsidence of chlorophyll allows other chemical compounds in the leaves—particularly carotenoids and flavonoids—to emerge from the green shadow of summer. These compounds do not decay as fast as chlorophyll, so they shine through in yellows, oranges, and reds as the green fades. Another set of chemicals, anthocyanins, are associated with the storage of sugars and give the leaves of some species deep purple and red hues.
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Image Credit: Jeff Schmaltz at NASA GSFC. Caption by Mike Carlowicz