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Is there actually a question in all this? The trick is to find a fuel or propulsion concept with a very high specific impulse that is, push out little mass very fast, therefore you need to carry less mass with you for the same change in momentum. Another solution is to minimize your delta-v by launching from an aircraft or at high altitude. Actually, fuel and hardware to eject is it about 95% of the weight of a spacecraft, only 5% or so is useful payload.
Sat, 06 Mar 2010 09:17:15 GMT
You have posted this question two times already.
Wikipedia article discusses various methods of propulsion, including ones that don't require reaction mass, and some hypothetical: en.wikipedia.org You can follow the links to other articles for details on each method. Also, have in mind that "Once you are in Earth orbit, you are halfway there", at least for most objects in the Solar system.
of the fuel of modern spacecraft is spent getting off from Earth.
can also have a look at the Atomic Rocket page: www.projectrho.com It discusses (fictional) spacecraft construction, including different kinds of propulsion.
Wikipedia article discusses various methods of propulsion, including ones that don't require reaction mass, and some hypothetical: en.wikipedia.org You can follow the links to other articles for details on each method. Also, have in mind that "Once you are in Earth orbit, you are halfway there", at least for most objects in the Solar system.
of the fuel of modern spacecraft is spent getting off from Earth.
can also have a look at the Atomic Rocket page: www.projectrho.com It discusses (fictional) spacecraft construction, including different kinds of propulsion.
Sat, 06 Mar 2010 10:06:56 GMT
We can get to space. building a interstella space craft capable of long distance travel would be simple enough, the high thrust shuttle service can ferry all the needed parts to a spacestation where a much larger craft capable of low thrust long burn travel can be built. It wouldnt ever need to make planet fall or lift off. As such the problems of breeching an atmosphere are uneccesary.
truely before we can go beyond our own star system without waiting 1000's of years to reach the nearest star we need to find a method of travelling faster than the speed of light.
truely before we can go beyond our own star system without waiting 1000's of years to reach the nearest star we need to find a method of travelling faster than the speed of light.
Sat, 06 Mar 2010 10:43:45 GMT
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