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Wu dahai
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新闻资讯  - 
China's embassy in Turkey has issued a travel warning to its citizens after some Chinese tourists were "attacked and harassed" during protests in Istanbul.
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Wu dahai
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纳米技术、自然探索、宇宙航天  - 
 
 
Are you Pregnant? 
http://goo.gl/20Euoj

Soon you can use your smart phone to conduct pregnancy test and monitor fetus health along the pregnancy

Advances in Science and Technology: http://sciconcilium.com/category/concilium-chronicle/ 

#app #smartphone #pregnancytest #tech #IOT 
Scientists have developed a self-contained fiber optic sensor for smartphones with the potential as pregnancy test and fetus monitoring
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Wu dahai
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影视、音乐、娱乐八卦  - 
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Wu dahai
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纳米技术、自然探索、宇宙航天  - 
 
 
NASA-Boeing X-48 Hybrid Wing Body Aircraft Project: View 6
Earth and sky meet in this view of the X-48C Hybrid Wing Body aircraft as it flies over Edwards Air Force Base in during a test flight from NASA's Armstrong Flight Research Center in Edwards, California during 2013. The long boom protruding from between the tails is part of the aircraft's parachute-deployment flight termination system.
 
After flying the remotely-piloted X-48B and X-48C Hybrid/Blended Wing Body research aircraft for nearly six years, the joint NASA-Boeing X-48 project team concluded a highly successful and productive flight test project at NASA’s Armstrong (formerly Dryden) Flight Research Center in 2013.

The manta-shaped X-48 Hybrid Wing Body technology demonstrator flew a total of 122 flights, 30 of them as the C-model. The last flight of the X-48C occurred on April 9, having first flown eight months ago on Aug. 7, 2012.

“We have accomplished our goal of establishing a ground to flight database, and proving the low speed controllability of the concept throughout the flight envelope,” said Fay Collier, manager of NASA’s Environmentally Responsible Aviation project. “Both very quiet and efficient, the hybrid wing body has shown promise for meeting all of NASA’s environmental goals for future aircraft designs,” Collier said.

The aircraft, designed by The Boeing Co. and built by Cranfield Aerospace Limited of the United Kingdom, was flown in partnership with NASA. The X-48C model, which was formerly the X-48B Blended Wing Body aircraft, was modified to evaluate the low-speed stability and control of a low-noise version of a notional, future Hybrid Wing Body (HWB) aircraft design. The HWB design stems from concept studies being conducted by NASA's Environmentally Responsible Aviation project of future potential aircraft designs 20 years from now.

“Our team at NASA Dryden (Armstrong) has done what we do best, flight test a unique aircraft and repeatedly collect data that will be used to design future ‘green’ airliners,” said Heather Maliska, NASA Dryden’s X-48C project manager. “It is bittersweet to see the program come to an end, but we are proud of the safe and extremely successful joint Boeing and NASA flight test program that we have conducted.”

Primary changes to the C model from the original B version that flew 92 flights at Dryden between 2007 and 2010 were geared to transforming it to an airframe noise-shielding configuration. External modifications included relocating the wingtip winglets inboard next to the engines, effectively turning them into twin tails. The aft deck of the aircraft was extended about two feet to the rear. Finally, the project team replaced the X-48B's three 50-pound thrust jet engines with two 89-pound thrust engines.

"Our goal was to define the low-speed envelope and explore the low-speed handling qualities of the Blended Wing Body class of tailless aircraft, and we have accomplished that," added Mike Kisska, Boeing's X-48 flight test project manager.

The X-48C retained most dimensions of the B model, with a wingspan just longer than 20 feet, and a weight of about 500 pounds. The aircraft had an estimated top speed of about 140 mph, and a maximum altitude of 10,000 feet.

Because handling qualities of the X-48C differed from those of the X-48B, the project team modified the flight control system software, including flight control limiters to keep the airplane flying within a safe flight envelope. This enabled a stronger and safer prototype flight control system suitable for further development for potential full-scale commercial hybrid or blended wing aircraft in the future.

NASA's Aeronautics Research Mission Directorate and Boeing funded the X-48 technology demonstration research effort, which supported NASA's goals of reduced fuel burn, emissions and noise.
 
Credit: NASA

+NASA Armstrong Flight Research Center 
+Boeing+ 

#NASA #Space #Aeronautics #Aircraft #Boeing #X48 #X48B #X48C #Hybrid #Blended #Wing #Body #HWB #Tailless #Design #Aviation #Research #Flight #Testing #Unmanned #Aerial #Vehicle #UAV #Edwards #California #UnitedStates #USA #USAF #AirForce #Military #Science #Technology #Engineering #Dryden #Armstrong
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Wu dahai
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纳米技术、自然探索、宇宙航天  - 
 
 
Hidden supermassive black holes revealed http://bit.ly/1fgUpSc

Scientists have detected 5 supermassive black holes previously clouded from view. The research suggests there are millions more hidden black holes out there.
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Wu dahai
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纳米技术、自然探索、宇宙航天  - 
 
 
Surfing a wake of light: Researchers observe and control light wakes for the first time http://ow.ly/310W4l
When a duck paddles across a pond or a supersonic plane flies through the sky, it leaves a wake in its path. Wakes occur whenever something is traveling through a medium faster than the waves it creates—in the duck's case water waves, in the plane's case shock waves, otherwise known as sonic booms.
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Wu dahai
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中国在野总理内阁  - 
 
中国大量企业在玩骗贷资本游戏,这种假借扩充产能获得银行贷款的企业庞氏骗局造成的后果是极度危险的,企业主精确的利用了共产党需要扩大就业保政权的心理,这些企业主并没有用心的去开发新产品去赢得市场竞争,而是争着去骗贷,通过财务操作转移资产,将对公账户的钱转移成个人账户,从而造成天量银行坏账,及他们用骗来钱的奢侈消费造成社会浮躁情绪。应严厉打击骗贷行为。
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法律、间谍、军事  - 
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宣传、您的观点  - 
 
 
The One China Policy: Taiwan Vs. China Explained by China Uncensored http://ow.ly/2QFY2K
The One China Policy is the rather tenuous agreement between Taiwan, the Republic of China, and mainland China (the People's Republic of China) that there is only one China. The problem is they both claim to be that one China. That's made China's position on the UN Security Council a
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