21st Century Space Race
I'm sure most people are aware of the poor state NASA is currently in. The US government is making a grave mistake not giving more support to what may be the most important agency your country has. Though I do have faith in the private space industry, and the future of Western space flight could remain bright. They might have an ace up their sleeve.
That is all good and fine but the newest player in manned spaceflight, China, could overtake the US and its allies in having the most advanced space program. Why? Because China is making space a priority. Their government is putting a great deal of effort and foresight into their program. This in truth reflects Chinese policy of long-term gains. They have a plan, and a vision, for the future of space. The US government cannot really say the same. The "vision" shown by most presidents amounts to little more than rhetoric. With each presidency the priorities seem to change. There are no "five year plans" for NASA. The American people and government are truly fair-weather friends to NASA, which could be their greatest mistake
NASA and its associates really need to light a fire under their asses. Space is the future. The high ground in conflict, the treasure trove of mineral resources, and eventually a place where people live and work. If more resources are not allocated to these organizations the US et al will be left behind while the Chinese gain hegemony over Earth and its colonies.
_________________
Opportunities multiply as they are seized. -Sun Tzu
Nature creates few men brave, industry and training makes many -Machiavelli
You can safely assume that you've created God in your own image when it turns out that God hates all the same people you do
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NASA has been a corrupt piece of sh*t since 1986. Up to the last minute they were in a state of denial over what caused the Challenger to blow up. It was there own stupidity and incompetence.
ruveyn
But yea, certainly would rather spend on space exploration than I would wars or bailouts.
Well, no money that is considered available for allocation to the space program... Much better spent garrisoning soldiers in Germany or Japan or other geopolitical machinations, right?
What they fail to see is that "geopolitics" is now expanded to include all the available real estate within reachable distance- "above" our heads
ruveyn
Yeah, that is true. I recall reading that after the Columbia disaster a great deal of blame was placed on the bureaucracy. People were discouraged from "rocking the boat" and thus potentially life saving information was squelched by virtue of office politics.
_________________
Opportunities multiply as they are seized. -Sun Tzu
Nature creates few men brave, industry and training makes many -Machiavelli
You can safely assume that you've created God in your own image when it turns out that God hates all the same people you do
It is where we put our GPS sats up in and where we fire our intercontinental ballistic missiles.
It is also were we launch our communication sats and our space telescopes.
If you want an advance notice of a collision with an asteroid or comet were are well survived by observation devices we put into space. As far as our manned programs go, that is strictly for national prestige. All of the good science being done with space hardware is being done in the un-manned programs.
ruveyn
iamnotaparakeet
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Have you ever watched episodes of the sci-fi series -Firefly-? Half the dialog is in Mandarin.
ruveyn
iamnotaparakeet
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Joined: 31 Jul 2007
Age: 40
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Have you ever watched episodes of the sci-fi series -Firefly-? Half the dialog is in Mandarin.
ruveyn
Yep, I have and I know that it is, but it still would be somewhat strange to hear in practice. Whereas in Firefly Chinese is used as the language of cursing, it would probably be more complex than everyone using it just to get phrases passed the censor.
Yep, I have and I know that it is, but it still would be somewhat strange to hear in practice. Whereas in Firefly Chinese is used as the language of cursing, it would probably be more complex than everyone using it just to get phrases passed the censor.
Dong mah. I dig it.
ruveyn
It would be nice if China decided to accelerate their program and stick with it. What the US and Russia discovered was that it wasnt worth that much money. Maybe China will come to a different conclusion, which would spur the US to spend more.
I expect they'll grab some laurels (moon flight?) and then retreat to a slower pace, like everyone else.
http://en.goldenmap.com/Antimatter_cata ... propulsion
if funding was placed in the right direction, like Freeman Dyson's Orion project in the 50s or the modern version of it Antimatter Catalyzed Nuclear Pulse Propulsion, which was researched at Penn State, then space would be worth it.
"Antimatter catalyzed nuclear pulse propulsion is a variation of nuclear pulse propulsion based upon the injection of antimatter into a mass of nuclear fuel which normally would not be useful in propulsion. The anti-protons used to start the reaction are consumed, so it is a misnomer to refer to them as a catalyst.
Traditional nuclear pulse propulsion has the downside that the minimum size of the engine is defined by the minimum size of the nuclear bombs used to create thrust. With conventional technologies nuclear explosives can scale down to about 1/100 kiloton (10 tons, 42 GJ; W54), but making them smaller seems difficult. Large nuclear explosive charges require a heavy structure for the spacecraft, and a very large (and heavy) pusher-plate assembly. Small nuclear explosives are believed to stop shrinking in overall size and required fissile nuclear materials at around 25 kilograms weight, so smaller pulse units are much more expensive per delivered unit energy, and much less mass efficient than larger ones. By injecting a small amount of antimatter into a subcritical mass of fuel (typically plutonium or uranium) fission of the fuel can be forced. An anti-proton has a negative electric charge just like an electron, and can be captured in a similar way by a positively charged atomic nucleus. The initial configuration, however, is not stable and radiates energy as gamma rays. As a consequence, the anti-proton moves closer and closer to the nucleus until they eventually touch, at which point the anti-proton and a proton are both annihilated. This reaction releases a tremendous amount of energy, of which some is released as gamma rays and some is transferred as kinetic energy to the nucleus, causing it to explode. The resulting shower of neutrons can cause the surrounding fuel to undergo rapid fission or even nuclear fusion.
The lower limit of the device size is determined by anti-proton handling issues and fission reaction requirements,
Tuning of the performance to the mission is also possible. Rocket efficiency is strongly related to the mass of the working mass used, which in this case is the nuclear fuel. The energy released by a given mass of fusion fuel is several times larger than that released by the same mass of a fission fuel. For missions requiring short periods of high thrust, such as manned interplanetary missions, pure microfission might be preferred because it reduces the number of fuel elements needed. For missions with longer periods of lower thrust, such as outer-planet probes, a combination of microfission and fusion might be preferred because it reduces the total fuel mass.
The concept was invented at Pennsylvania State University before 1992. Since then, several groups have studied antimatter-catalyzed micro fission/fusion engines in the lab (sometimes antiproton as opposed to antimatter).
Work has been performed at Lawrence Livermore National Laboratory on antiproton-initiated fusion. In contrast to the large mass, complexity and recirculating power of conventional drivers for inertial confinement fusion (ICF), antiproton annihilation offers a specific energy of 90 MJ per µg and thus a unique form of energy packaging and delivery. In principle, antiproton drivers could provide a profound reduction in system mass for advanced space propulsion by ICF. Antiproton-driven ICF is a speculative concept, and the handling of antiprotons and their required injection precision—temporally and spatially—will present significant technical challenges. The storage and manipulation of low-energy antiprotons, particularly in the form of antihydrogen, is a science in its infancy and a large scale-up of antiproton production over present supply methods would be required to embark on a serious R&D programme for such applications. The current (2011) record for antimatter storage is just over 1000 seconds performed in the CERN facility, a monumental leap from the millisecond timescales that previously were achievable"
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if funding was placed in the right direction, like Freeman Dyson's Orion project in the 50s or the modern version of it Antimatter Catalyzed Nuclear Pulse Propulsion, which was researched at Penn State, then space would be worth it.
"Antimatter catalyzed nuclear pulse propulsion is a variation of nuclear pulse propulsion based upon the injection of antimatter into a mass of nuclear fuel which normally would not be useful in propulsion. The anti-protons used to start the reaction are consumed, so it is a misnomer to refer to them as a catalyst.
Traditional nuclear pulse propulsion has the downside that the minimum size of the engine is defined by the minimum size of the nuclear bombs used to create thrust. With conventional technologies nuclear explosives can scale down to about 1/100 kiloton (10 tons, 42 GJ; W54), but making them smaller seems difficult. Large nuclear explosive charges require a heavy structure for the spacecraft, and a very large (and heavy) pusher-plate assembly. Small nuclear explosives are believed to stop shrinking in overall size and required fissile nuclear materials at around 25 kilograms weight, so smaller pulse units are much more expensive per delivered unit energy, and much less mass efficient than larger ones. By injecting a small amount of antimatter into a subcritical mass of fuel (typically plutonium or uranium) fission of the fuel can be forced. An anti-proton has a negative electric charge just like an electron, and can be captured in a similar way by a positively charged atomic nucleus. The initial configuration, however, is not stable and radiates energy as gamma rays. As a consequence, the anti-proton moves closer and closer to the nucleus until they eventually touch, at which point the anti-proton and a proton are both annihilated. This reaction releases a tremendous amount of energy, of which some is released as gamma rays and some is transferred as kinetic energy to the nucleus, causing it to explode. The resulting shower of neutrons can cause the surrounding fuel to undergo rapid fission or even nuclear fusion.
The lower limit of the device size is determined by anti-proton handling issues and fission reaction requirements,
Tuning of the performance to the mission is also possible. Rocket efficiency is strongly related to the mass of the working mass used, which in this case is the nuclear fuel. The energy released by a given mass of fusion fuel is several times larger than that released by the same mass of a fission fuel. For missions requiring short periods of high thrust, such as manned interplanetary missions, pure microfission might be preferred because it reduces the number of fuel elements needed. For missions with longer periods of lower thrust, such as outer-planet probes, a combination of microfission and fusion might be preferred because it reduces the total fuel mass.
The concept was invented at Pennsylvania State University before 1992. Since then, several groups have studied antimatter-catalyzed micro fission/fusion engines in the lab (sometimes antiproton as opposed to antimatter).
Work has been performed at Lawrence Livermore National Laboratory on antiproton-initiated fusion. In contrast to the large mass, complexity and recirculating power of conventional drivers for inertial confinement fusion (ICF), antiproton annihilation offers a specific energy of 90 MJ per µg and thus a unique form of energy packaging and delivery. In principle, antiproton drivers could provide a profound reduction in system mass for advanced space propulsion by ICF. Antiproton-driven ICF is a speculative concept, and the handling of antiprotons and their required injection precision—temporally and spatially—will present significant technical challenges. The storage and manipulation of low-energy antiprotons, particularly in the form of antihydrogen, is a science in its infancy and a large scale-up of antiproton production over present supply methods would be required to embark on a serious R&D programme for such applications. The current (2011) record for antimatter storage is just over 1000 seconds performed in the CERN facility, a monumental leap from the millisecond timescales that previously were achievable"
Practical controllable nuclear fission has been 30 years in the future since 1955.
ruveyn
My apologies if I did not explain it well enough in the OP. It is now a race because the Chinese have set definite goals and employ a greater amount of people for their space program. The US may lose their technological edge and the Chinese may begin making territorial claims over non-terrestrial areas
Well moving hundreds of millions of people into space is an undertaking that is unrealistic for decades. Not until we have one or several space elevators. Or another novel way of getting to space with minimum of energy. There also has to be places to go. The Mars terraforming project could be well underway in one hundred years, but it may be complete in five hundred, five thousand, or five hundred thousand, for all we know. Asteroid homes likewise would not be able to support huge populations.
For the time being we are likely to continue seeing small scale manned operations; but much more advanced autonomous and semi-autonomous robotic missions will be the norm. Much of the space industry will be reliant on this technology. If the Chinese gain the edge, they will require the best supercomputers and advanced artificial intelligence design to implement their plans. If they overtake the US et al in their space technology they will ultimately overtake them in all other fields as well
I expect they'll grab some laurels (moon flight?) and then retreat to a slower pace, like everyone else.
It is certainly possible. The Chinese seem to have a greater drive and ambition towards space at this point. There are certain elements of their program that are geared towards national prestige, certainly, but their government has a very far-sighted outlook, at least when it comes to some things... What I suspect they will do is make space flight incredibly cheap and competitive by selling their designs to up and coming space nations who are in their sphere of economic/political influence. Who knows, maybe NASA will be using spacecraft with the stamp "MADE IN CHINA" on the side someday. The Chinese have made it evident they have a positive view on cooperation with NASA, the ESA, JAXA, CSA, etc. For instance, I read their final space station design may have a "universal docking ring" of some sort that will allow US, Russian, or private spacecraft to dock. The US have an embargo on China for this sort of technology trading, however. At least I think it is referred to as an embargo.
_________________
Opportunities multiply as they are seized. -Sun Tzu
Nature creates few men brave, industry and training makes many -Machiavelli
You can safely assume that you've created God in your own image when it turns out that God hates all the same people you do
NASA is at the mercy of whimsical politicians as it always has been.
With the exception of myself and a minority of others, the American public could care less what the Chinese or Russians do in space because we’re more interested in “change”.
NASA’s budget may seem big to us but by comparison to other programs it’s negligible.
I blame NASA for its own decline, as well. They don’t do nearly enough to relay the scientific fruits of their work in space to the public so therefore the public is in the dark and only sees it was waste. NASA says that a government agency can’t advertise itself but that doesn’t mean they can’t hire a contractor to do it for them like everything else.
One of the findings of the CAIB (Columbia Accident Investigation Board) was scheduling pressure being placed over more important issues. Of course, the contractors took the spanking. A government agency isn’t going to take the blame when they can pass it down to someone else; that’s just life in a bureaucracy.
Personally, I would place most all emphasis (and budget) on in low earth orbit microgravity and life sciences, Hubble telescope, and an occasional unmanned space probe in that order and forget colonizing the moon or Mars. From a budgeting standpoint, staying with what we already do is the safest bet for sustained operations.
One of the findings of the CAIB (Columbia Accident Investigation Board) was scheduling pressure being placed over more important issues. Of course, the contractors took the spanking. A government agency isn’t going to take the blame when they can pass it down to someone else; that’s just life in a bureaucracy.
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There is a saying in government and corporate circles: sh*f flows downhill.
ruveyn
