Climbing the “power ascension” market.
Category: energy – Page 291
A new unified theory for heat transport accurately describes a wide range of materials – from crystals and polycrystalline solids to alloys and glasses – and allows them to be treated in the same way for the first time. The methodology, which is based on the Green-Kubo theory of linear response and concepts from lattice dynamics, naturally accounts for quantum mechanical effects and thus allows for the predictive modelling of heat transport in glasses at low temperature – a feat never achieved before, say the researchers who developed it. It will be important for better understanding and designing heat transporting devices in a host of applications, from heat management in high-power electronics, batteries and photovoltaics to thermoelectric energy harvesting and solid-state cooling. It might even help describe heat flow in planetary systems.
“Heat transport is the fundamental mechanism though which thermal equilibrium is reached,” explains Stefano Baroni of the Scuola Internazionale Superiore di Studi Avanzati (SISSA) in Trieste, Italy, who led this research effort. “It can also be thought of as the most fundamental manifestation of irreversibility in nature – as heat flows from warm areas in the same system to cooler ones as time flows from the past to the future (the ‘arrow of time’). What is more, many modern technologies rely on our ability to control heat transport.”
However, despite its importance, heat transport is still poorly understood and it is difficult to simulate the heat transport of materials because of this lack of understanding. To overcome this knowledge gap, researchers employ various simulation techniques based on diverse physical assumptions and approximations for different classes of material – crystals on one hand and disordered solids and liquids on the other.
Where to get the GAIA 160-Hybrid drone: https://www.foxtechfpv.com/gaia-160-hybrid-hexacopter-arf-combo.html
We did it!!!!!!
Broke the Flight Time Record!!!!!
This is a historic moment for UAV drone.
Foxtech GAIA 160-Hybrid has made aviation history by completing the 100km crossing sea bay flight in 180 minutes.
On 9th September, Foxtech team successfully completed the crossing sea bay flight with GAIA 160-Hybrid from changdao to dalian. GAIA 160-Hybrid took off from a yacht in changdao and landed on a coast of Dalian, the total range is 100km, this is the longest single flight of a hexacopter in the World! Foxtech GAIA 160-Hybrid hexacopter broke the flight time record!
FOXTECH GAIA 160-Hybrid hexacopter has an onboard 2000w generator that offers plenty of power to 6 very high efficiency motors to ensure a long flight time. It is installed with redundancy flight controllers, three GPS and a full range of optional equipments like RTK GPS, 20km datalink, parachute, secondary radio control to make this drone very reliable and very safe.
Foxtech team arrived in changdao on 5 September, but due to the heavy wind and bad weather conditions the flight was actually delayed, we have to stop the mission and wait for another good weather to try again. Finally, Foxtech team was ready to make their attempt on 9 September. Departing from a yacht in changdao, weather was cooperative and all was going well.
Foxtech GAIA 160-Hybrid successfully took off from the yacht, with GPS guidance and automated flight, the drone could fly independently. And the drone was accompanied by a yacht staying within a range of 500 meters, so that our operator could control the aircraft at any time. During the flight, the wind was rising, force 7 grades, the wind speed is about 17m/s. But with the robust stability of GAIA 160-Hybrid and rich experience of our technicist, GAIA 160-Hybrid overcame the adverse weather conditions, and just over 3 hours after takeoff, GAIA 160-Hybrid landed safely in a coast of Dalian.
The journey was filled with challenges, because any type of adverse wind will have a
severe impact on the drone. So this time the successful flight dramatically proved the.
reliability and potentials of GAIA 160-Hybrid, proved that Foxtech GAIA 160-Hybrid is a high-performance flying platform which is able to adapt many complicated environment, especially the strong breeze and gale weather. A longer flight time coupled with good stability of GAIA 160-Hybrid opens a wide range of new commercial possibilities for businesses such as inspection of offshore platforms, search and rescue, power line inspection etc.
Bone like foam created by researchers is showing Wolverine like healing properties.
For 6,000 years, humans have been making things from metal because it’s strong and tough; a lot of energy is required to damage it. The flip side of this property is that a lot of energy is required to repair that damage. Typically, the repair process involves melting the metal with welding torches that can reach 6,300 °F.
Now, for the first time, Penn Engineers have developed a way to repair metal at room temperature. They call their technique “healing” because of its similarity to the way bones heal, recruiting raw material and energy from an external source.
The study was conducted by James Pikul, assistant professor in the Department of Mechanical Engineering and Applied Mechanics and Zakaria Hsain, a graduate student in his lab.
A French startup is trying to streamline electric conversion with Tesla batteries in order to offer a relatively cheap way to convert older fossil fuel-powered cars.
Therefs nothing new about electric conversions, but they are often really complicated, which also makes them really expensive.
It most often cost tens of thousands of dollars, and thatfs why most electric conversions today are done on classic cars or to create drag-strip monsters.
Researchers at the University of Waterloo have developed a cheaper and more efficient method for Internet-of-Things devices to receive high-speed wireless connectivity.
With 75 billion Internet of Things (IoT) devices expected to be in place by 2025, a growing strain will be placed on requirements of wireless networks. Contemporary WiFi and cellular networks won’t be enough to support the influx of IoT devices, the researchers highlighted in their new study.
Millimeter wave (mmWave), a network that offers multi-gigahertz of unlicensed bandwidth—more than 200 times that allocated to today’s WiFi and cellular networks, can be used to address the looming issue. In fact, 5G networks are going to be powered by mmWave technology. However, the hardware required to use mmWave is expensive and power-hungry, which are significant deterrents to it being deployed in many IoT applications.
Vortex ring gun
Posted in energy
Could be used for fires aswell.
The vortex ring gun is an experimental non-lethal weapon for crowd control that uses high-energy vortex rings of gas to knock down people or spray them with marking ink or other chemicals.
The concept was explored by the US Army starting in 1998, and by some commercial firms. Knockdown of distant individuals currently seems unlikely even if the rings are launched at theoretical maximum speed.[1] As for the delivery of chemicals, leakage during flight is still a problem.[ citation needed ]
Weapons based on similar principles but different designs and purposes have been described before, typically using acetylene-air or hydrogen–oxygen explosions to create and propel the vortices.[2].
Editor’s note: This article is part of a supporting engagement with the Electromagnetic Defense Task Force’s efforts in order to inform readers on the vulnerabilities within the electromagnetic spectrum. For the printer friendly version click here.
In spring 2019, a group of nearly 200 military, government, academic, and private industry experts in various areas of electromagnetic defense gathered for the second Electromagnetic Defense Task Force (EDTF) summit. During this time a full analytical and technical review was initiated on the recently released report titled “High-Altitude Electromagnetic Pulse and the Bulk Power System: Potential Impacts and Mitigation Strategies” authored by the Electric Power Research Institute (EPRI). This essay outlines the strengths and weaknesses of the report and aims to generate further discussion among industry, policy makers, military, and academia to ensure the nation is adequately prepared for any potential electromagnetic event.
Theoretical physicists from SISSA and the University of California at Davis have developed a new approach to heat transport in materials, which finally allows crystals, polycrystalline solids, alloys and glasses to be treated on the same solid footing. It opens the way to the numerical simulation of the thermal properties of a vast class of materials in important fields such as energy saving, conversion, scavenging, storage, heat dissipation, shielding and the planetary sciences, which have thus far dodged a proper computational treatment. The research has been published in Nature Communications.
Heat dissipates over time. In a sense, heat flow is the defining feature of the arrow of time. In spite of the foundational importance of heat transport, the father of its modern theory, Sir Rudolph Peierls, wrote in 1961, “It seems there is no problem in modern physics for which there are on record as many false starts, and as many theories which overlook some essential feature, as in the problem of the thermal conductivity of nonconducting crystals.”
A half-century has passed since, and heat transport is still one of the most elusive chapters of theoretical materials science. As a matter of fact, no unified approach has been able to treat crystals and (partially) disordered solids on equal footing, thus hindering the efforts of generations of materials scientists to simulate certain materials, or different states of the same material occurring in the same physical system or device with the same accuracy.
With a flourish of a silk curtain at the Farnborough Air Show on July 16, British defense secretary Gavin Williamson unveiled a full-scale model of the Tempest, the UK’s concept for a domestically built twin-engine stealth fighter to enter service in the 2030s. The Tempest will supposedly boast a laundry list of sixth-generation technologies such as being optionally-manned, mounting hypersonic or directed energy weapons, and capability to deploy and control drone swarms. However, it may also represent a Brexit-era gambit to revive defense cooperation with Germany and France.
London has seeded “Team Tempest” with £2 billion ($2.6 billion) for initial development through 2020. Major defense contractor BAE System is leading development with the Royal Air Force, with Rolls Royce contributing engines, European firm MBDA integrating weapons, and Italian company Leonardo developing sensors and avionics.
Design will supposedly be finalized in the early 2020s, with a flyable prototype planned in 2025 and production aircraft entering service in 2035, gradually replacing the RAF’s fourth-generation Typhoon fighters and complementing F-35 stealth jets. This seventeen-year development cycle is considered ambitious for something as complicated and expensive as a stealth fighter.