metamaterials

cubesatImproved Solar Sail

June 12, 2019 | Brian Wang |
 
The conventional means of collecting and redirecting solar sail light uses a metal-coated polyimide film but this is sub-optimal and unstable because the very large and very thin sail must be rapidly slewed away from the sun line for navigational …
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metamaterialsAcoustic Metamaterials Can Block 94% of Sounds

March 7, 2019 | Brian Wang |
 
Synthetic, sound-silencing structures—acoustic metamaterials can block 94% of sounds. This ring of materials will be able to make vacuum cleaners, air conditioners, fans and other devices and products much quieter. Boston University researchers Ghaffarivardavagh and Zhang wanted to block sound …
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cloakingMetamaterial to bend sound around large objects could open up many other cloaking applications

May 10, 2018 | Brian Wang |
 
Amanda D. Hanford, at Pennsylvania State University, is taking the introductory steps to make acoustic ground cloaks. These materials redirect approaching waves around an object without scattering the wave senergy, concealing the object from the sound waves. Potentially this could …
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chinaChina is deploying metamaterials and railguns using SR-71 like development speed and flexibility

April 14, 2018 | Brian Wang |
 
The United States has been able to lead in military technology for decades with DARPA research. DARPA and ARPA helped with the creation of * the internet * GPS (global positioning system) * stealth fighters * antimissile systems * M16 …
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air forceChina is developing J-20 Stealth fighter variants and next generation fighter will have improved metamaterials

April 14, 2018 | Brian Wang |
 
China is continuing to upgrade the J-20 stealth fighter with a higher thrust engine and new electronic equipment and radars. China is mass-producing metamaterials for the J-20 stealth fighter. Metamaterial antennas can increase radiated power, resulting in longer-range and more …
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materialsTaiwan plans to acquire stealth fighters and do more with a defense budget 15-20 times smaller than China’s budget

March 21, 2017 | Brian Wang |
 
Taiwan’s Ministry of National Defense plans to acquire new-generation stealth fighter jets with short or vertical takeoff and landing capabilities to deter Chinese military action against Taiwan, it said in its Quadrennial Defense Review released yesterday. The military plans to …
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materialsChina will raise defense budget by about 7% in 2017 with official number announced on Sunday

March 4, 2017 | Brian Wang |
 
China will raise its defense budget by about 7 percent this year, a government spokeswoman said Saturday, continuing a trend of lowered growth amid a slowing economy. Total defense spending would account for about 1.3 percent of projected gross domestic …
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metamaterialsAccurate IMF forecasts for nominal GDP and PPP GDP for next few years

December 3, 2016 | Brian Wang |
 
The IMF predictions for nominal GDP and PPP were inaccurate in the early 2000s, because of adjustments that shifted purchasing power parity and currency fluctuations. Currency is still fluctuating as the Chinese yuan has weakened enough to eliminate projected nominal …
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cloakingUS Air Force says unfocused and disjointed hypersonic development is losing to focused efforts in Russia and China

December 1, 2016 | Brian Wang |
 
Here is a link to a 16 page unclassified Summary of A Threat to America’s Global Vigilance, Reach, and Power High-speed maneuvering weapons The U.S. lead in the technologies of high-speed flight is in question, particularly as it pertains to …
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communicationsIsrael will equip all Merkava 4 tanks and Namer Heavy APCs with Trophy Active Protection Systems

November 10, 2016 | Brian Wang |
 
Israel’s Ministry of Defense (IMOD) plans to continue the acquisition of Trophy active protection systems (APS), to equip every new Merkava 4 tank and Namer Heavy Armored Personnel Carrier (APC) with active protection, providing significant additional protection for every tank …
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