in plasma physics from MIT and is the inventor of the VASIMR … Other related electrically powered spacecraft propulsion concepts are the electrodeless plasma thruster, the microwave arcjet rocket, and the pulsed inductive thruster. Le moteur de propulsion VASIMR (Variable Specific Impulse Magnetoplasma Rocket) risque de révolutionner l’exploration spatiale en permettant d’envoyer des sondes plus vite et plus loin. This section further heats the plasma to greater than 1,000,000 K (1,000,000 °C; 1,800,000 °F) —about 173 times the temperature of the Sun's surface. Web Site Design and Development by Diego Méndez, A solar powered lunar tug concept using two VASIMR, Web Site Design and Development by Diego Méndez. Ad Astra Rocket Company / 141 W. Bay Area Blvd / Webster, TX 77598 / info@adastrarocket.com 281.526.0500 / 281.526.0599 (fax) 011.506.2666.9272 (Costa Rica) 0049.6192.902591 (Germany) Important refinements were introduced in the 1990s, including the use of the helicon plasma source, which replaced the plasma gun originally envisioned and its electrodes, adding to durability and long life. This allows for ions to leave the magnetic nozzle with a very narrow energy distribution, and for significantly simplified and compact magnet arrangement in the engine. It is a plasma propulsion engine, one of several types of spacecraft electric propulsion systems. 281.526.0500 / 281.526.0599 (fax) 011.506.2666.9272 (Costa Rica) 0049.6192.902591 (Germany) The [6] Electrically speaking, NEXT is almost twice as efficient, and successfully completed a 48,000 hours (5.5 years) test in December 2009. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. A second coupler, known as the Ion Cyclotron Heating (ICH) section, emits electromagnetic waves in resonance with the orbits of ions and electrons as they travel through the engine. [15] VX-100 plasma output tripled the prior record of the VX-50. He imagined the VASIMR plasma engine several decades ago. On top of that, any power generation technology will produce waste heat. Proposed applications for VASIMR such as the rapid transportation of people to Mars would require a very high power, low mass energy source, ten times more efficient than a nuclear reactor (see nuclear electric rocket). [4] Published data on the 50 kW VX-50 showed the electrical efficiency to be 59% based on a 90% coupling efficiency and a 65% ion speed boosting efficiency. The mission concept presented here utilizes the 200 kW VASIMR® SEP space tug to lower the altitude of Zenit stages for … The VASIMR system would cut the trip to Mars by months according to Franklin Chang Diaz, a former MIT student, NASA astronaut, and now CEO of Ad Astra. L’entreprise Ad Astra Rocket a été créé en 2005 par un ancien astronaute de la NASA, Franklin Chang-Diaz. It appears as though the planned 200 kW design is being run at 100 kW for reasons that are not mentioned in the press release. The VF-200TM will consist of two 100 kW thruster units side-by-side. [19], Between April and September 2009, 200 kW tests were performed on the VX-200 prototype with 2tesla superconducting magnets that are powered separatelyand not accounted for in any "efficiency" calculations. A high-power electric thruster requires a lot of electricity, and generating that in space may require some engineering innovations. A nuclear-electric powered spacecraft could dramatically shorten human transit times between planets and propel robotic cargo missions with a very large payload. The VASIMR® engine has three important features that distinguish it from other plasma propulsion systems: The VASIMR® engine has the ability to more widely vary its exhaust parameters (thrust and specific impulse) in order to optimize mission requirements resulting in the lowest trip time with the highest delivered payload for a given fuel load. A US Delaware corporation established in 2005, Ad Astra Rocket Company is the developer of the VASIMR engine, an advanced plasma propulsion system for the emerging in-space transportation market. ICH is a technique used in fusion experiments to heat plasma to temperatures on the order of those in the Sun's core (10 million K). Resonance is achieved through a reduction of the magnetic field in this portion of the engine that slows the orbital motion of the plasma particles. El VASIMR®tiene tres características importantes que lo distinguen de otros sistemas de propulsión de plasma: VASIMR®tiene la capacidad de variar sus parámetros de escape (empuje e impulso específico) con el fin de cumplir de forma óptima con los requerimientos de la misión, lo cual se traduce en un tiempo mínimo de viaje, con la máxima carga útil entregada, para una determinada masa de combustible. The primary purpose of the first RF coupler is to convert gas into plasma by ionizing it, or knocking an electron loose from each gas atom. A significant portion of that 40% was waste heat (see energy conversion efficiency). [23] The SS in the name stands for "steady state", as a goal of the long duration test is to demonstrate continuous operation at thermal steady state. Global VASIMR (Variable Specific Impulse Magnetoplasma Rocket) Engine Market research report offers: Market definition of the global VASIMR (Variable Specific Impulse Magnetoplasma Rocket) Engine market along with the analysis of different influencing factors like drivers, restraints, and opportunities.
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