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Magnetic Field Oscillating Amplified Thruster
The magnetic field oscillating amplified thruster (MOA; often named as plasma engine by the media) is a versatile electrothermodynamic system, which is able to accelerate nearly every electrically charged gaseous medium ( plasma application) to extremely high velocities, thereby generating a high energetic plasma jet in the exhaust and also electrical conductive fluids (hydrodynamic application) in general. To do so, MOA utilizes a so-called Alfvén wave, a physical principle within magnetohydrodynamics that was described first in 1942 by the later Nobel Prize winner Hannes Alfvén and which states that fluctuating magnetic fields can induce density waves in electric conductive media (e.g., plasma, salty water, etc.). These density waves can reach very high velocities and as the particles inside the medium are coupled to them, the particles are as well accelerated to very high velocities, accordingly reaching very high kinetic energies. Due to the heating mechanism based on adiaba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plasma (physics)
Plasma () 1, where \nu_ is the electron gyrofrequency and \nu_ is the electron collision rate. It is often the case that the electrons are magnetized while the ions are not. Magnetized plasmas are ''anisotropic'', meaning that their properties in the direction parallel to the magnetic field are different from those perpendicular to it. While electric fields in plasmas are usually small due to the plasma high conductivity, the electric field associated with a plasma moving with velocity \mathbf in the magnetic field \mathbf is given by the usual Lorentz force, Lorentz formula \mathbf = -\mathbf\times\mathbf, and is not affected by Debye shielding. Mathematical descriptions To completely describe the state of a plasma, all of the particle locations and velocities that describe the electromagnetic field in the plasma region would need to be written down. However, it is generally not practical or necessary to keep track of all the particles in a plasma. Therefore, plasma physicist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argon
Argon is a chemical element with the symbol Ar and atomic number 18. It is in group 18 of the periodic table and is a noble gas. Argon is the third-most abundant gas in Earth's atmosphere, at 0.934% (9340 ppmv). It is more than twice as abundant as water vapor (which averages about 4000 ppmv, but varies greatly), 23 times as abundant as carbon dioxide (400 ppmv), and more than 500 times as abundant as neon (18 ppmv). Argon is the most abundant noble gas in Earth's crust, comprising 0.00015% of the crust. Nearly all of the argon in Earth's atmosphere is radiogenic argon-40, derived from the decay of potassium-40 in Earth's crust. In the universe, argon-36 is by far the most common argon isotope, as it is the most easily produced by stellar nucleosynthesis in supernovas. The name "argon" is derived from the Greek word , neuter singular form of meaning 'lazy' or 'inactive', as a reference to the fact that the element undergoes almost no chemical reactions. The complete octe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Technology Readiness Level
Technology readiness levels (TRLs) are a method for estimating the maturity of technologies during the acquisition phase of a program. TRLs enable consistent and uniform discussions of technical maturity across different types of technology. TRL is determined during a technology readiness assessment (TRA) that examines program concepts, technology requirements, and demonstrated technology capabilities. TRLs are based on a scale from 1 to 9 with 9 being the most mature technology. TRL was developed at NASA during the 1970s. The US Department of Defense has used the scale for procurement since the early 2000s. By 2008 the scale was also in use at the European Space Agency (ESA). The European Commission advised EU-funded research and innovation projects to adopt the scale in 2010. TRLs were consequently used in 2014 in the EU Horizon 2020 program. In 2013, the TRL scale was further canonized by the International Organization for Standardization (ISO) with the publication of the I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Company Registers
This is a list of official business registers around the world. There are many types of official business registers, usually maintained for various purposes by a state authority, such as a government agency, or a court of law. In some cases, it may also be devolved to self-governing bodies, either commercial (a chamber of commerce) or professional (a regulatory college); or to a dedicated, highly regulated company (i.e., operator of a stock exchange, a multilateral trading facility, a central securities depository or an alternative trading system). The following is an incomplete list of official business registers by country. Types of registers A business register may include data on entities, as well as on their status for various purposes. Examples of such registers include: * company register — a register of legal entities in the jurisdiction they operate under, for the purpose of establishing, dissolving, acquisition of legal capacity and (in some cases) juridic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fukuoka, Fukuoka
is the sixth-largest city in Japan, the second-largest port city after Yokohama, and the capital city of Fukuoka Prefecture, Japan. The city is built along the shores of Hakata Bay, and has been a center of international commerce since ancient times. The area has long been considered the gateway to the country, as it is the nearest point among Japan's main islands to the Asian mainland. Although humans occupied the area since the Jomon period, some of the earliest settlers of the Yayoi period arrived in the Fukuoka area. The city rose to prominence during the Yamato period. Because of the cross-cultural exposure, and the relatively great distance from the social and political centers of Kyoto, Osaka, and later, Edo (Tokyo), Fukuoka gained a distinctive local culture and dialect that has persisted to the present. Fukuoka is the most populous city on Kyūshū island, followed by Kitakyushu. It is the largest city and metropolitan area west of Keihanshin. The city was des ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Astronautical Congress
Every year, the International Astronautical Federation with the support of the International Academy of Astronautics and the International Institute of Space Law (IISL), holds the International Astronautical Congress (IAC) which is hosted by one of the national society members of the IAF. They are an annual meeting of the actors in the discipline of space, and are generally held in late September or early October. They consist of plenary sessions, lectures and meetings. The IAC is attended by the agency heads and senior executives of the world's space agencies. As the Second World War came to an end, the United States and the Soviet Union held different and competing political worldviews. As the Cold War began to take shape, communication between the two countries became less frequent. Both countries turned their focus to achieving military superiority over the other. Six years after the Iron Curtain fell, the International Astronautical Federation (IAF) was formed by scient ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Technical University Graz
Graz University of Technology (german: link=no, Technische Universität Graz, short ''TU Graz'') is one of five universities in Styria, Austria. It was founded in 1811 by Archduke John of Austria and is the oldest science and technology research and educational institute in Austria. It currently comprises seven faculties and is a public university. It offers 19 bachelors and 35 masters study programmes (of which 18 are in English) across all technology and natural science disciplines. Doctoral training is organised in 14 English-speaking doctoral schools. The university has more than 13,000 students, and approximately 2,000 students graduate every year. Science study programmes are offered in the framework of NAWI Graz together with the University of Graz. The university has a staff of 3,912. Research areas are combined in five fields of expertise. ''TU Graz'', the ''University of Leoben'' and ''TU Wien'' form the network ''Austrian Universities of Technology (TU Austria)'' wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Giessen
Giessen, spelled Gießen in German (), is a town in the German state (''Bundesland'') of Hesse, capital of both the district of Giessen and the administrative region of Giessen. The population is approximately 90,000, with roughly 37,000 university students. The name comes from ''Giezzen'', as it was first referred to in 1197, which refers to the position of the town between several rivers, lakes and streams. The largest river in Giessen is the Lahn, which divides the town in two parts (west and east), roughly north of Frankfurt am Main. Giessen is also home to the University of Giessen. In 1969, the town hosted the ninth ''Hessentag'' state festival. History Giessen came into being as a moated castle in 1152 built by Count Wilhelm von Gleiberg, although the history of the community in the northeast and in today's suburb called "Wieseck" dates back to 775. The town became part of Hesse-Marburg in 1567, passing to Hesse-Darmstadt in 1604. The University of Giessen was founded i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Justus-Liebig-University
University of Giessen, official name Justus Liebig University Giessen (german: Justus-Liebig-Universität Gießen), is a large public research university in Giessen, Hesse, Germany. It is named after its most famous faculty member, Justus von Liebig, the founder of modern agricultural chemistry and inventor of artificial fertiliser. It covers the areas of arts/humanities, business, dentistry, economics, law, medicine, science, social sciences, and veterinary medicine. Its university hospital, which has two sites, Giessen and Marburg (the latter of which is the teaching hospital of the University of Marburg), is the only private university hospital in Germany. History The University of Giessen is among the oldest institutions of higher educations in the German-speaking world. It was founded in 1607 as a Lutheran university in the city of Giessen in Hesse-Darmstadt because the all-Hessian ''Landesuniversität'' (the nearby University of Marburg (''Philipps-Universität Marburg'') ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stuhlinger Medal
The Stuhlinger Medal, whose official name is the "Ernst Stuhlinger Medal for Outstanding Achievement in Electric Propulsion", is the highest honor in the field of electric propulsion for spacecraft bestowed by the Electric Rocket Propulsion Society (ERPS), the main professional society in that field, to persons who made outstanding contributions to the science, technology or development of electric propulsion. The Stuhlinger Medal was established by the ERPS in 2005 as the "Medal for Outstanding Achievement in Electric Propulsion", then renamed after its first recipient Ernst Stuhlinger (1913–2008), the German-born American rocket scientist, shortly after his death in 2008. The medal is typically awarded every two years during the ERPS's main conference, the International Electric Propulsion Conference. Recipients See also * List of engineering awards This list of engineering awards is an index to articles about notable awards for achievements in engineering. It inclu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Garching Bei München
Garching bei München (''Garching near Munich'') or Garching is a town in Bavaria, Germany, near Munich. It is the home of several research institutes and university departments on its Campus Garching, campus. It became a city on 14 September 1990. Location The town is at , near the river Isar and the A9 autobahn, Bundesautobahn 9. Garching has a number of scientific research institutes and scientific experiment facilities located in the city, including a linear accelerator and a research nuclear reactor. The nuclear research reactor, nicknamed ''Atomei'' (atomic egg) appears in the city's coat of arms, and started the process leading to an accumulation of research institutes. A number of roads and places in the city are named after scientists, mathematicians and technical innovators such as Carl von Linde, Rudolf Diesel, Albert Einstein, Leonhard Euler, Werner Heisenberg, Max Planck, Wilhelm Röntgen, and Erwin Schrödinger. Districts The town has four districts: * Garching * D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Technical University Of Munich
The Technical University of Munich (TUM or TU Munich; german: Technische Universität München) is a public research university in Munich, Germany. It specializes in engineering, technology, medicine, and applied and natural sciences. Established in 1868 by King Ludwig II of Bavaria, the university now has additional campuses in Garching, Freising, Heilbronn, Straubing, and Singapore, with the Garching campus being its largest. The university is organized into eight schools and departments, and is supported by numerous research centers. It is one of the largest universities in Germany, with 50,000 students and an annual budget of €1,770.3 million (including university hospital). A ''University of Excellence'' under the German Universities Excellence Initiative, TUM is considered the top university in Germany according to major rankings as of 2022 and is among the leading universities in the European Union. Its researchers and alumni include 18 Nobel laureates and 23 Leib ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
