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Researchers at the University of Washington say they've built all the pieces for a fusion-powered rocket system that could get a crew to Mars in 30 days. Now they just have to put the pieces together and see if they work.
"If we can pull off a fusion demonstration in a year, with hundreds of thousands of dollars ... there might be a better, cheaper, faster path to using fusion in other applications," John Slough, a research assistant professor of aeronautics and astronautics, told NBC News.
Billions upon billions of dollars have been spent on fusion energy research over the past half-century — at places like the National Ignition Facility in California, where scientists are zapping deuterium-tritium pellets with lasers; Sandia National Laboratories in New Mexico, the home of the world's most powerful laboratory radiation source; and the ITER experimental facility in France, where the world's biggest magnetic plasma chamber is being built.
Need that in miles? The closest possible distance from Earth to Mars in miles is 33.9 million miles.
How fast can conventional rockets go?
Any rocket can achieve a very high speed if it accelerates for a long time. A conventional rocket has a hard time doing this because a huge amount of fuel must be carried into space in order for this to happen. This may make the rocket too heavy to lift off. Conventional rockets are generally designed to meet the speeds necessary for them to go where they need to go, and not go much faster.
Generally, a conventional rocket has to be going about 17,000 mph for it to achieve orbit; otherwise known as LEO -- Low Earth Orbit. This is the minimum speed for a spacegoing rocket. The farther from the Earth, the faster it needs to go. We list some other velocities for comparison:
Flight Plan
speed required
Earth to LEO (low Earth orbit) 17,000 mph
Earth to Earth escape 24,200 mph
Earth to lunar orbit 25,700 mph
Earth to GEO (geosynchronous Earth orbit) 26,400 mph
Earth to solar escape 36,500 mph
With increasing speed it becomes harder and harder to gain another mile per hour. This is because the amount of fuel one has to carry becomes really big, and it becomes difficult and expensive to lift that much fuel into space. Solar escape velocity is nearing the practical limit of how fast one can move with conventional rockets.
Originally posted by Chrisfishenstein
reply to post by goou111
Need that in miles? The closest possible distance from Earth to Mars in miles is 33.9 million miles.
Linky.....www.universetoday.com...
So unless my math is wrong, that is 47,083 MPH....
How fast can conventional rockets go?
Any rocket can achieve a very high speed if it accelerates for a long time. A conventional rocket has a hard time doing this because a huge amount of fuel must be carried into space in order for this to happen. This may make the rocket too heavy to lift off. Conventional rockets are generally designed to meet the speeds necessary for them to go where they need to go, and not go much faster.
Generally, a conventional rocket has to be going about 17,000 mph for it to achieve orbit; otherwise known as LEO -- Low Earth Orbit. This is the minimum speed for a spacegoing rocket. The farther from the Earth, the faster it needs to go. We list some other velocities for comparison:
Flight Plan
speed required
Earth to LEO (low Earth orbit) 17,000 mph
Earth to Earth escape 24,200 mph
Earth to lunar orbit 25,700 mph
Earth to GEO (geosynchronous Earth orbit) 26,400 mph
Earth to solar escape 36,500 mph
With increasing speed it becomes harder and harder to gain another mile per hour. This is because the amount of fuel one has to carry becomes really big, and it becomes difficult and expensive to lift that much fuel into space. Solar escape velocity is nearing the practical limit of how fast one can move with conventional rockets.
LINKY.....www.qrg.northwestern.edu...
So how does this fusion system get us there 8 times faster when it is not 8 times faster?
Sorry I am ignorant, but it is just a question.....
Originally posted by fatpastyhead
so we would get to the moon using this technology pretty quick?
Posted Via ATS Mobile: m.abovetopsecret.com
Originally posted by Chrisfishenstein
So how does this fusion system get us there 8 times faster when it is not 8 times faster?
Sorry I am ignorant, but it is just a question.....
Aerobraking is a spaceflight maneuver that reduces the high point of an elliptical orbit (apoapsis) by flying the vehicle through the atmosphere at the low point of the orbit (periapsis). The resulting drag slows the spacecraft. Aerobraking is used when a spacecraft requires a low orbit after arriving at a body with an atmosphere, and it requires less fuel than does the direct use of a rocket engine.
Originally posted by minkmouse
What I always wonder is how one works out the braking system. If we could get to the moon in 2 hours as specd above, it seems to me about halfway through the trip at those speeds, one would have to start applying reverse thrust in order not to overshoot. Anyone got the procedures for slowing down?