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ET3 Global Alliance
ET3 Global Alliance is an American open consortium of licensees that has tried to implement the Evacuated Tube Transport (ET3). It was founded by Daryl Oster in 1997. The stated goal of the consortium was to build a global transportation system using car-sized capsules traveling in 1.5-meter-diameter tubes via frictionless superconductive maglev. Oster claims that the ET3 system will cost only 20 cents' worth of electrical energy to get up to 350 mph (560 km/h). ET3 claims that initial systems would travel at the speed of for in-state trips and later will be developed to 6,500 km/h (4,000 mph, hypersonic speed). History Southwest Jiaotong University (SWJTU) became the first university institution to become licensees of the ET3 GA consortium. Most ET3 licensees held outside of the United States are held in China. By 2007, Yaoping Zhang, a former professor of SWJTU, began promoting ETT as "evolutionary transportation". Yaoping Zhang currently operates ET3 GA's subsi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Consortium
A consortium () is an association of two or more individuals, companies, organizations, or governments (or any combination of these entities) with the objective of participating in a common activity or pooling their resources for achieving a common goal. Consortia are generally nonprofit with a goal to help its members improve their competitiveness in the specific field. is a Latin word meaning " partnership", "association", or "society", and derives from ("shared in property"), itself from ("together") and ("fate"). Examples Educational The Universities' consortium is established to share research laboratories and equipment facilities, exchange faculty and students, provide programs abroad, and form specialized research centers and admissions offices.Wallace Lang D (1975). "The consortium in higher education". ''Journal of Educational Administration'', 13(2), 23-36. https://doi.org/10.1108/eb009730 Generally, it includes a corporate identity, voluntary membership of in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
High-temperature Superconductivity
High-temperature superconductivity (high-c or HTS) is superconductivity in materials with a critical temperature (the temperature below which the material behaves as a superconductor) above , the boiling point of liquid nitrogen. They are "high-temperature" only relative to previously known superconductors, which function only closer to absolute zero. The first high-temperature superconductor was discovered in 1986 by IBM researchers Georg Bednorz and K. Alex Müller. Although the critical temperature is around , this material was modified by Ching-Wu Chu to make the first high-temperature superconductor with critical temperature . Bednorz and Müller were awarded the Nobel Prize in Physics in 1987 "for their important break-through in the discovery of superconductivity in ceramic materials". Most high-c materials are type-II superconductors. The major advantage of high-temperature superconductors is that they can be cooled using liquid nitrogen, in contrast to previously known s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sustainable Transport
Sustainable transport is transportation sustainability, sustainable in terms of their social and Environmental issue, environmental impacts. Components for evaluating sustainability include the particular vehicles used; the source of energy; and the infrastructure used to accommodate the transport (Street, streets and roads, rail transport, railways, airway (aviation), airways, waterways and canals). Transportation sustainability is largely being measured by transportation system effectiveness and efficiency as well as the environmental impact, environmental and climate change, climate impacts of the system. Transport systems have significant impacts on the environment. In 2018, it contributed to around 20% of global Greenhouse gas emissions, CO2 emissions. Greenhouse gas emissions from transport are increasing at a faster rate than any other energy using sector. Road transport is also a major contributor to local air pollution and smog. Sustainable transport systems make a posit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypothetical Technology
Hypothetical technology is technology that does not exist yet, but that could exist in the future. This article presents examples of technologies that have been hypothesized or proposed, but that have not been developed yet. An example of hypothetical technology is teleportation. Artificial general intelligence Artificial general intelligence (AGI) is a hypothetical artificial intelligence that demonstrates a human-like ability to learn. AGI is a machine which could do all human activities with the efficiency of a machine. It is a primary goal of artificial intelligence research and a common topic among science fiction writers and futurists. Artificial general intelligence is also referred to as ''strong AI'', or seAdvanced Human Intelligencewhere he defines strong AI as "machine intelligence with the full range of human intelligence." ''full AI'' or one that has the ability to perform "general intelligent action". AGI is associated with traits such as consciousness, sentience, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vactrain
A vactrain (or vacuum tube train) is a proposed design for very-high-speed rail transportation. It is a maglev (magnetic levitation) line using partly evacuated tubes or tunnels. Reduced air resistance could permit vactrains to travel at very high (hypersonic) speeds with relatively little power—up to . This is 5–6 times the speed of sound in Earth's atmosphere at sea level. 18th century In 1799, George Medhurst of London conceived of and patented an atmospheric railway that could convey people or cargo through pressurized or evacuated tubes. The early atmospheric railways and pneumatic tube transport systems (such as the Dalkey Atmospheric Railway) relied on steam power for propulsion. 19th century In 1888, Michel Verne, son of Jules Verne, imagined a submarine pneumatic tube transport system that could propel a passenger capsule at speeds up to under the Atlantic Ocean (a transatlantic tunnel) in a short story called "An Express of the Future". 20th century The va ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swissmetro
''Swissmetro'' is a proposed Swiss transportation system based on vacuum-train (also known as vactrain) technology. It was invented by Swiss engineer Rodolphe Nieth in 1974 and it is presently being promoted and developed as SwissMetro-NG ("NG" for New Generation). Technology The Swissmetro project was presented in a special report by Rodolphe Nieth, Martin Steiger and Jean-Francois Braillard in 1980. It proposed vehicles travelling at very fast speeds in a network of underground tunnels. Rolling resistance was eliminated with magnetic levitation, as in the Transrapid of Germany and air resistance was reduced by lowering the air pressure in the tunnels to around 10% of the normal atmospheric pressure. Propulsion was electrical ( linear motors). The travel time between Bern and Zürich would have been reduced from around 1 hour by intercity train or motorcar to a mere 12 minutes with Swissmetro. Objectives The objectives were to connect Swiss urban centres with a fast, modern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyperloop
Hyperloop is a proposed high-speed transportation system for both passengers and freight. The concept was published by entrepreneur Elon Musk in a 2013 white paper, where the hyperloop was described as a transportation system using capsules supported by an air bearing, air-bearing surface within a low-pressure tube. Hyperloop systems have three essential elements: tubes, pods, and terminals. The tube is a large, sealed Vacuum#Vacuum-driven machines, low-pressure system (typically a long tunnel). The pod is a coach at atmospheric pressure that experiences low Drag (physics), air resistance or friction inside the tube using Maglev, magnetic propulsion (in the initial design, augmented by a ducted fan). The terminal handles pod arrivals and departures. The hyperloop, in the form proposed by Musk, differs from other Vactrain, vactrains by relying on residual air pressure inside the tube to provide lift from Aerofoil, aerofoils and propulsion by fans; however, many subsequent variants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elon Musk
Elon Reeve Musk ( ; born June 28, 1971) is a businessman. He is known for his leadership of Tesla, SpaceX, X (formerly Twitter), and the Department of Government Efficiency (DOGE). Musk has been considered the wealthiest person in the world since 2021; ''Forbes'' estimates his net worth to be . Born to a wealthy family in Pretoria, South Africa, Musk emigrated in 1989 to Canada. He received bachelor's degrees from the University of Pennsylvania in 1997 before moving to California, United States, to pursue business ventures. In 1995, Musk co-founded the software company Zip2. Following its sale in 1999, he co-founded X.com, an online payment company that later merged to form PayPal, which was acquired by eBay in 2002. That year, Musk also became an American citizen. In 2002, Musk founded the space technology company SpaceX, becoming its CEO and chief engineer; the company has since led innovations in reusable rockets and commercial spaceflight. Musk joined ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southwest Jiaotong University
Southwest Jiaotong University (SWJTU; ) is a national public science and engineering university in Chengdu, Sichuan, China. The university is affiliated with the Ministry of Education. It is a national key university co-sponsored by the Ministry of Education, China Railway Corporation, the Sichuan Provincial Government, and the Chengdu Municipal Government. The university is part of Project 211 and the Double First-Class Construction. SWJTU was founded in 1896 and is one of China 's leading engineering universities. Known as the cradle of China's railway engineers, SWJTU is the birthplace of China's modern education in transportation, mining and metallurgy, and civil engineering. Through its history, the university has adopted different names such as “Imperial Chinese Railway College,” “Tangshan Jiaotong University,” and “Tangshan Institute of Railway.” SWJTU is consistently ranked as one of the top universities in China, placing 181-190 in The ''Times Higher ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Public Transport
Public transport (also known as public transit, mass transit, or simply transit) are forms of transport available to the general public. It typically uses a fixed schedule, route and charges a fixed fare. There is no rigid definition of which kinds of transport are included, and air travel is often not thought of when discussing public transport—dictionaries use wording like "buses, trains, etc." Examples of public transport include Public transport bus service, city buses, trolleybuses, trams (or light rail) and Passenger rail transport, passenger trains, rapid transit (metro/subway/underground, etc.) and ferry, ferries. Public transport between cities is dominated by airlines, intercity bus service, coaches, and intercity rail. High-speed rail networks are being developed in many parts of the world. Most public transport systems run along fixed routes with set embarkation/disembarkation points to a prearranged timetable, with the most frequent services running to a headwa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypersonic Speed
In aerodynamics, a hypersonic speed is one that exceeds five times the speed of sound, often stated as starting at speeds of Mach 5 and above. The precise Mach number at which a craft can be said to be flying at hypersonic speed varies, since individual physical changes in the airflow (like molecular dissociation and ionization) occur at different speeds; these effects collectively become important around Mach 5–10. The hypersonic regime can also be alternatively defined as speeds where specific heat capacity changes with the temperature of the flow as kinetic energy of the moving object is converted into heat. Characteristics of flow While the definition of hypersonic flow can be quite vague and is generally debatable (especially because of the absence of discontinuity between supersonic and hypersonic flows), a hypersonic flow may be characterized by certain physical phenomena that can no longer be analytically discounted as in supersonic flow. The peculiarities in hyperso ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maglev
Maglev (derived from '' magnetic levitation'') is a system of rail transport whose rolling stock is levitated by electromagnets rather than rolled on wheels, eliminating rolling resistance. Compared to conventional railways, maglev trains have higher top speeds, superior acceleration and deceleration, lower maintenance costs, improved gradient handling, and lower noise. However, they are more expensive to build, cannot use existing infrastructure, and use more energy at high speeds. Maglev trains have set several speed records. The train speed record of was set by the experimental Japanese L0 Series maglev in 2015. From 2002 until 2021, the record for the highest operational speed of a passenger train of was held by the Shanghai maglev train, which uses German Transrapid technology. The service connects Shanghai Pudong International Airport and the outskirts of central Pudong, Shanghai. At its historical top speed, it covered the distance of in just over 8minutes. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
