The Direct Fusion Drive (DFD) is a compact nuclear fusion engine which could provide both thrust and electrical power for spaceships. This technology opens unprecedented possibilities to explore the solar system in a limited amount of time and with a very high payload to propellant masses ratio.Designers of the Pulsar Direct Fusion Drive think that this technology can radically expand the science capability of planetary missions.
source.image(PrtSc): Pulsar Fusion
This engine is attractive for long missions where a lower thrust version of the engine, having a propellant mass ratio near unity, provides efficiencies that other engines cannot achieve.
Designed to produce both thrust and electric power for interplanetary spacecraft.Long-term source of acceleration with self-sustaining fuel supply. Modelling shows that this technology can potentially propel a spacecraft with a mass of about 1,000 kg (2,200 lb) to Pluto in 4 years.
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Since DFD provides power as well as propulsion in one integrated device, it would also provide as much as 2 MW of power to the payloads upon arrival. Designers think that this technology can radically expand the science capability of planetary missions.The Direct Fusion Drive is a revolutionary steady state fusion propulsion concept, based on a compact fusion reactor. It will provide power of the order of units of MW, providing both thrust of the order of 10−101N with specific impulses between 103− 105s and auxiliary power to the space system.