Matches in DBpedia 2016-04 for { <http://wikidata.dbpedia.org/resource/Q648588> ?p ?o }
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- Q648588 subject Q6900565.
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- Q648588 subject Q8784914.
- Q648588 subject Q8784984.
- Q648588 abstract "Template:ForAn electrically powered spacecraft propulsion system uses electrical energy to change the velocity of a spacecraft. Most of these kinds of spacecraft propulsion systems work by electrically expelling propellant (reaction mass) at high speed, but electrodynamic tethers work by interacting with a planet's magnetic field.Electric thrusters typically use much less propellant than chemical rockets because they have a higher exhaust speed (operate at a higher specific impulse) than chemical rockets. Due to limited electric power the thrust is much weaker compared to chemical rockets, but electric propulsion can provide a small thrust for a long time. Electric propulsion can achieve high speeds over long periods and thus can work better than chemical rockets for some deep space missions.Electric propulsion is now a mature and widely used technology on spacecraft. Russian satellites have used electric propulsion for decades. As of 2013, over 200 spacecraft operated throughout the solar system use electric propulsion for stationkeeping, orbit raising, or primary propulsion. In the future, the most advanced electric thrusters may be able to impart a Delta-v of 100 km/s, which is enough to take a spacecraft to the outer planets of the Solar System (with nuclear power), but is insufficient for interstellar travel. Also, an electro-rocket with an external power source (transmissible through laser on the solar panels) has a theoretical possibility for interstellar flight. However, electric propulsion is not a method suitable for launches from the Earth's surface, as the thrust for such systems is too weak.".
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- Q648588 wikiPageExternalLink electricprop.html.
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- Q648588 comment "Template:ForAn electrically powered spacecraft propulsion system uses electrical energy to change the velocity of a spacecraft.".
- Q648588 label "Electrically powered spacecraft propulsion".
- Q648588 depiction Xenon_hall_thruster.jpg.