Right now wind is leading the renewable energy surge and records for the largest turbines are being set. Just how big is the largest one? Siemens is creating a single blade that is 225 feet long, basically as wide as a 747 airplane 다운로드.
Siemens manufactures the mammoth B75 blades in one, smooth, streamlined piece — with no joints — using its IntegralBlade process 다운로드. The technique — which requires glass fibre-reinforced epoxy resin and balsa wood to be cast in a mould — renders the blades steadfast and less likely to develop faults while being beaten with 181 tonnes of air energy every second, when wind speeds are ten metres per second (30 mph) 다운로드. The huge strain it is put under means no blade can leave the factory without being carefully inspected for even minor cracks.
The size of these things is almost unimaginable, like trying to picture three 747’s spinning around a massive pole Twrp download. They will also have to shoot up into the sky several hundred meters.
According to Siemens, when fully constructed this mammoth would generate 6-megwatt’s, while another group is looking into 20-megawatt versions 다운로드!
This little guy is called Glaucus Atlanticus 다운로드. It is a species of sea slug that grows to around 35 mm. They float partially by means of an air bubble, which they swallow and store in their gastric cavity 신치림 퇴근길 mp3 다운로드. They also have a rather unique defence mechanism – they store the nematocysts produced by jellyfish (their prey) in their own tissues to protect against predators 솔리드웍스 2016 한글판 다운로드.
I was approached by someone from an initiative called San Diego County Trees…(a project) extolling the benefits of urban trees. I just spent time on the website, where the coolest feature is an interactive map of the whole county showing very specific tree locations and information, including quantified benefits…(like) carbon sequestration, water retention, energy saved, and air pollutants reduced 국민 보건 체조.
Wow! Look at that image…millions of dollars in savings, water conservation, improved air quality. That is impressive 다운로드.
Some more facts include, “the net cooling effect of a young, healthy tree is equivalent to ten room-size air conditioners operating 20 hours a day,” and the energy savings of planting a tree on the sunny side of your house (3% after 5 years, 12% after 15 years) 다운로드.
Pushing ahead with plans to invest $304 million in Austin, Texas, Apple has secured a deal for three large patches of land adjacent to its existing campus, which — when developed — will expand its presence in the area and result in the creation of more than 3,600 jobs 다운로드.
The State of Texas offered Apple an investment of $21 million over ten years via its Texas Enterprise Fund (TEF), followed by an $8.6 million grant investment from the City of Austin 다운로드.
As part of its City deal, Apple would need to invest $56.5 million in new facilities and equipment by the end of 2015, with an additional $226 million investment coming by the end of 2021 다운로드.
The U.S. Air Force is quietly assembling the world’s most powerful air-to-air fighting team at bases near Iran. Stealthy F-22 Raptors on their first front-line deployment have joined a potent mix of active-duty and Air National Guard F-15 Eagles, including some fitted with the latest advanced radars 정음메모패드 다운로드. The Raptor-Eagle team has been honing special tactics for clearing the air of Iranian fighters in the event of war.
The highly-experienced Massachusetts Guardsmen, who typically have several years more experience than their active-duty counterparts, would be ready “should Iran test the 104th,” said wing commander Col 리니지 접속기. Robert Brooks.
…it’s the methods above that the U.S. dogfighting armada would likely use to wipe out the antiquated but determined Iranian air force if the unthinkable occurred and fighting broke out 몬스터 헌터 스토리즈. The warplanes are in place. The pilots are ready. Hopefully they won’t be needed.
It’s amazing that this Hypersonic jet was able to travel more than 13,000 mph with heats of over 3,500 degrees.
During flight it experienced shockwaves, 100 times more powerful than expected, which caused it to spin 다운로드. It then righted itself and flew for twice as long before technicians finally aborted the mission.
The full story:
In August the Pentagon’s research arm, known as DARPA, carried out a test flight of an experimental aircraft capable of traveling at 20 times the speed of sound 스팀에서 게임 다운로드.
The arrowhead-shaped unmanned aircraft, dubbed Falcon Hypersonic Technology Vehicle 2, blasted off from Vandenberg Air Force Base, northwest of Santa Barbara, into the upper reaches of the Earth’s atmosphere…then glided above the Pacific at 20 times the speed of sound, or Mach 20 다운로드.
The plan was for the Falcon to speed westward for about 30 minutes before plunging into the ocean near Kwajalein Atoll, about 4,000 miles from Vandenberg 윈드러너 다운로드.
But it was ended about nine minutes into flight for unknown reasons. The launch had received worldwide attention and much fanfare, but officials didn’t provide much information on why the launch failed 다운로드.
The flight successfully demonstrated stable aerodynamically-controlled flight at speeds up to Mach 20 for nearly three minutes 포켓몬고 오토봇 다운로드. Approximately nine minutes into the test flight, the vehicle experienced a series of shocks culminating in an anomaly, which prompted the autonomous flight safety system to use the vehicle’s aerodynamic systems to make a controlled descent and splashdown into the ocean 다운로드.
“The initial shockwave disturbances experienced during second flight, from which the vehicle was able to recover and continue controlled flight, exceeded by more than 100 times what the vehicle was designed to withstand,” said DARPA Acting Director, Kaigham J 다운로드. Gabriel. “That’s a major validation that we’re advancing our understanding of aerodynamic control for hypersonic flight.”
…larger than anticipated portions of the vehicle’s skin peeled from the aerostructure 다운로드. The resulting gaps created strong, impulsive shock waves around the vehicle as it travelled nearly 13,000 miles per hour, causing the vehicle to roll abruptly 다운로드. Based on knowledge gained from the first flight in 2010 and incorporated into the second flight, the vehicle’s aerodynamic stability allowed it to right itself successfully after several shockwave-induced rolls. Eventually, however, the severity of the continued disturbances finally exceeded the vehicle’s ability to recover.