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![]() Stephen Horgan wrote: Interesting article; however, it does seem to assume that the US is the only nation on the planet, or at least the only one interested in space. Neither is true, and allowing that the argument that the current costs of launch to LEO are a function of US government policy is weakened somewhat. If there was another much simpler and cheaper way to get mass to orbit then what is stopping everyone else? To me the big problem seems to be he "What would a truly dynamist space exploration culture look like? Imagine, instead of launching a few government employees once every few months, daily trips into space by hundreds or thousands of private citizens by multiple vehicle types, just as our airline industry today uses Boeings and Airbuses. Some conduct research at private orbital laboratories, some head to orbital resorts, others board cruise liners for trips around the Moon. There are hotels in high inclination orbits for spectacular views of Earth, and vehicle assembly hangars in low inclination for departure to points beyond Earth orbit. There are huge radio telescopes on the far side of the Moon, protected from the incessant radio noise of our industrial planet, and at the poles are research facilities and tourist spots, using the water ice hidden in the craters there. The vast majority of the funding comes from private expenditures made by people seeking their own adventures off-planet, and NASA has little involvement, other than to take advantage of the dramatic reductions in cost and dramatic improvements in technology to do those things that only it can do, such as expeditions to the outer planets." This assumes that if you cut the costs of space access way down, suddenly a giant demand will arise for spaceflight that doesn't exist today, and the high flight rates will lower the cost of each individual flight. In short, it becomes a self perpetuating system. Let's go through this point-by-point: "daily trips into space by hundreds or thousands of private citizens by multiple vehicle types, just as our airline industry today uses Boeings and Airbuses." The reason that we have so many people moving around via airliners is that they want to go somewhere fairly quickly, be it a near or distant location. In some cases, such as transoceanic destinations, getting there by airliner is the only economically viable means of travel as well as the only one that doesn't take days to accomplish. In short, airline travel is a means to an end, not generally and end in itself. "Some conduct research at private orbital laboratories, some head to orbital resorts, others board cruise liners for trips around the Moon. There are hotels in high inclination orbits for spectacular views of Earth, and vehicle assembly hangars in low inclination for departure to points beyond Earth orbit." The "private orbital laboratories"- I assume are being used in some way to generate profit for people earthside, such as the production of exotic alloys or crystals, or perfectly spherical ball bearings. Unfortunately, the only two things that one has in orbit that one doesn't have on Earth are a very hard vacuum (and not even that at LEO) and a microgravity environment. Having people on board these laboratories means that people will move around, and that will screw up the microgravity environment by imparting their movements to the laboratory's structure. So these laboratories would probably be unmanned most of the time while they perform automated functions with people only showing up at the end of the process to pick up the finished results and deliver new raw materials; and if that's the case you may want to automate the the whole raw material delivery/finished product return process also as it could save a lot of weight over the need to use spacecraft with human accommodations on them. The "orbital resorts" have the advantage of a great view of the Earth and weightlessness. But weightlessness has generally resulted in spacesickness among astronauts, so unless you want to make your stay long enough to overcome a few days of nausea you might want to consider staying on Earth's surface. As for the view of the Earth's surface from orbit, it will by spectacular- as is the view out of an airliner's window as you look down at the world passing below you. But after a few flights you start noticing that you are watching the in-flight movie more than what's out the window, as it's the final destination that's the point of the flight, not what you see while going there. In this respect, the orbital resort may actually be inferior to the aircraft- at least on the aircraft you see different things on trips to different locations, whereas the view of Earth's surface is going to get awfully repetitive after a dozen orbits or so. Unless you are looking out of a big window at the Earth you might as well be watching it on TV- and that could be done from the Earth's surface with far less expense. As for the cruise liner flights around the Moon, looking at the Moon close-up is going to be infinitely more boring than looking at Earth as it's color is monotone, and with no clouds or weather to cause changes to its surface appearance it's going to be about as exciting as looking at a large boulder. You want to see an interesting moon, take a cruise around Io instead. Unless you are planing a mighty long trip, your only other likely destination on a "departure to points beyond Earth orbit" is going to be the Moon. See above. "There are huge radio telescopes on the far side of the Moon, protected from the incessant radio noise of our industrial planet, and at the poles are research facilities and tourist spots, using the water ice hidden in the craters there." As we all know, Arecibo is one of the hottest tourist destinations on the surface of the planet, and one must book reservations months in advance to see "The Big Dish". For a space entrepreneur, Rand has just found a way of spending money building giant radio telescopes on the Moon that is going to have zero potential of making a buck for investors in them. These things have government pork barrel science project written all over them. I note that that polar lunar ice is taken as a given here, although we aren't by any means sure it exists, or that if it does exist it is in quantities and concentrations to make it cheaper to use than bringing water up from Earth. As to what exactly the research facilities at the poles are researching, I have no idea; maybe the effects of sensory deprivation and loneliness on their occupants as they watch the lunar tourists jumping twenty feet into the air..er...sky outside the base window and realize that those lucky SOBs will soon be back on Earth where you can step outdoors in a swimsuit without exploding. "The vast majority of the funding comes from private expenditures made by people seeking their own adventures off-planet, and NASA has little involvement..." Now this is a very telling statement. Note that it doesn't say: "The vast majority of the funding comes from companies entering the lucrative world of space investment" and that the main reason for doing this is supposed to be adventures, not making a buck by entering a new frontier. If I had a billion or two of spare cash burning a hole in my pocket, would I be wiser to spend it on having an adventure, or investing it into something that might make me yet more money? I note it's been a while since Bill Gates has gone into the Amazonian rain forest on an exotic butterfly collecting expedition, even though he could easily afford to do it. Even Steve Fosset's adventures in air travel are probably starting to bore him, as well as the media and general public. In short, this basically presupposes that space is supposed to be a playground for the idle rich with nothing better to do with their money. The extrapolation of the Russian ISS tourist flights into becoming the future of spaceflight. But remember, this is supposed to be done by "daily trips into space by hundreds or thousands of private citizens by multiple vehicle types" so apparently there are a hell of a lot more idle rich in the future than nowadays, and the "Jet Set" has been replaced by the "Rocket Riche". As for myself, if I ever became wealthy, I'd still enjoy the simple things in life; the good bottle of wine, the fine aged cheddar, inviting my friends on quail hunts and "accidentally" shooting them, and occasionally being the power behind the throne of a weakling president. Who needs space adventures when you can do stuff like that? But that's just me. Now about that evil NASA having little involvment...who the hell do you think built those giant radio telescopes on the far side of the Moon? Paul Allen as a way to try and score with Dr. Fiorella Terenzi? "...other than to take advantage of the dramatic reductions in cost and dramatic improvements in technology to do those things that only it can do, such as expeditions to the outer planets." Hell, Bill Gates could probably finance a manned Mars mission right now if he felt like it. Steve Fosset and Paul Allen could lead the expedition, and Burt Rutan could build a giant Martian glider for them all to land with. Jeri Hall and Dr. Terenzi could have the first Martian catfight, and Richard Branson could be the first gay man on Mars. And I still think that we should move Io into Earth orbit so that space tourists will have the equivalent of an exotic south seas island with a active volcano on it to go to. :-) Pat .. |
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On 19 Feb 2006 09:08:35 -0800, "Ed Kyle" wrote:
Russia has launched and returned from orbit an 18 seat capacity (some unoccupied on six manned flights during 2003-2005, as well as launching 11 separate Progress supply missions. The U.S. managed only one semi-successful mission during the same period carrying six astronauts. Seven. And Shuttle delivered more cargo to ISS on STS-114 than all of the Progress flights in 2005. I hate to say it, but we cannot ignore the fact that the U.S. shuttle killed all of the astronauts it launched in 2003 - more astronauts in one accident than have ever died in all Russian space disasters combined. However, the Shuttle has also launched several times more people into space than Russia ever has. Zvezda is the core propulsion module, the engine, for ISS. It, along with Russia's Progress ships, provide the bulk of the station's Delta-V. Actually, the Shuttle peformed more reboost than Progress did prior to 2003, and likely will again once regular flights resume. Brian |
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On 19 Feb 2006 07:13:29 -0800, in a place far, far away, "Stephen
Horgan" made the phosphor on my monitor glow in such a way as to indicate that: http://www.thenewatlantis.com/archive/6/simberg.htm Interesting article; however, it does seem to assume that the US is the only nation on the planet, or at least the only one interested in space. No, it doesn't. But no other country is doing anything sensible with regard to space transportation, either. Neither is true, and allowing that the argument that the current costs of launch to LEO are a function of US government policy is weakened somewhat. If there was another much simpler and cheaper way to get mass to orbit then what is stopping everyone else? Everyone else tends to follow either the US, or Russian lead, and assume that if there were a better way, one of them would be doing it. That was in fact what Russia did, briefly, with Buran, when people still imagined that the Shuttle was a good design. |
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On Sun, 19 Feb 2006 13:08:46 -0600, in a place far, far away, Pat
Flannery made the phosphor on my monitor glow in such a way as to indicate that: To me the big problem seems to be he "What would a truly dynamist space exploration culture look like? Imagine, instead of launching a few government employees once every few months, daily trips into space by hundreds or thousands of private citizens by multiple vehicle types, just as our airline industry today uses Boeings and Airbuses. Some conduct research at private orbital laboratories, some head to orbital resorts, others board cruise liners for trips around the Moon. There are hotels in high inclination orbits for spectacular views of Earth, and vehicle assembly hangars in low inclination for departure to points beyond Earth orbit. There are huge radio telescopes on the far side of the Moon, protected from the incessant radio noise of our industrial planet, and at the poles are research facilities and tourist spots, using the water ice hidden in the craters there. The vast majority of the funding comes from private expenditures made by people seeking their own adventures off-planet, and NASA has little involvement, other than to take advantage of the dramatic reductions in cost and dramatic improvements in technology to do those things that only it can do, such as expeditions to the outer planets." This assumes that if you cut the costs of space access way down, suddenly a giant demand will arise for spaceflight that doesn't exist today It does exist today--it's just not being satified. and the high flight rates will lower the cost of each individual flight. In short, it becomes a self perpetuating system. Yes. It's called virtuous circle. Let's go through this point-by-point: "daily trips into space by hundreds or thousands of private citizens by multiple vehicle types, just as our airline industry today uses Boeings and Airbuses." The reason that we have so many people moving around via airliners is that they want to go somewhere fairly quickly, be it a near or distant location. In some cases, such as transoceanic destinations, getting there by airliner is the only economically viable means of travel as well as the only one that doesn't take days to accomplish. In short, airline travel is a means to an end, not generally and end in itself. So? That doesn't mean that there isn't demand to enter space. "Some conduct research at private orbital laboratories, some head to orbital resorts, others board cruise liners for trips around the Moon. There are hotels in high inclination orbits for spectacular views of Earth, and vehicle assembly hangars in low inclination for departure to points beyond Earth orbit." The "private orbital laboratories"- I assume are being used in some way to generate profit for people earthside, such as the production of exotic alloys or crystals, or perfectly spherical ball bearings. Or more likely, do research that can't safely be done on earth. strawman about microgravity snipped The "orbital resorts" have the advantage of a great view of the Earth and weightlessness. But weightlessness has generally resulted in spacesickness among astronauts, so unless you want to make your stay long enough to overcome a few days of nausea you might want to consider staying on Earth's surface. Or use good medication, which astronauts can't for performance reasons. Or spin the hotel. As for the view of the Earth's surface from orbit, it will by spectacular- as is the view out of an airliner's window as you look down at the world passing below you. But after a few flights you start noticing that you are watching the in-flight movie more than what's out the window, as it's the final destination that's the point of the flight, not what you see while going there. In this respect, the orbital resort may actually be inferior to the aircraft- at least on the aircraft you see different things on trips to different locations, whereas the view of Earth's surface is going to get awfully repetitive after a dozen orbits or so. Unless you are looking out of a big window at the Earth you might as well be watching it on TV- and that could be done from the Earth's surface with far less expense. As for the cruise liner flights around the Moon, looking at the Moon close-up is going to be infinitely more boring than looking at Earth as it's color is monotone, and with no clouds or weather to cause changes to its surface appearance it's going to be about as exciting as looking at a large boulder. You want to see an interesting moon, take a cruise around Io instead. Your assumption is defied by every single person (that I know of) who has flown in space, who universally find looking out the window fascinating, and never tire of it. "There are huge radio telescopes on the far side of the Moon, protected from the incessant radio noise of our industrial planet, and at the poles are research facilities and tourist spots, using the water ice hidden in the craters there." As we all know, Arecibo is one of the hottest tourist destinations on the surface of the planet, and one must book reservations months in advance to see "The Big Dish". For a space entrepreneur, Rand has just found a way of spending money building giant radio telescopes on the Moon that is going to have zero potential of making a buck for investors in them. I didn't say that anyone would invest in a radio telescope as a tourism venture. Nice (well, actually no, it's kind of dumb) strawman, though. "The vast majority of the funding comes from private expenditures made by people seeking their own adventures off-planet, and NASA has little involvement..." Now this is a very telling statement. Note that it doesn't say: "The vast majority of the funding comes from companies entering the lucrative world of space investment" and that the main reason for doing this is supposed to be adventures, not making a buck by entering a new frontier. It's making a buck by selling adventures. If I had a billion or two of spare cash burning a hole in my pocket, would I be wiser to spend it on having an adventure, or investing it into something that might make me yet more money? That depends entirely on whether or not you think you have enough money, or enough excitement in your life. I note it's been a while since Bill Gates has gone into the Amazonian rain forest on an exotic butterfly collecting expedition, even though he could easily afford to do it. Am I supposed to extrapolate the market from Bill Gates? This is dumb, Pat. One does it by performing market research. Even Steve Fosset's adventures in air travel are probably starting to bore him, as well as the media and general public. Yes, that must be why he continues to do it. Not a very good attempt at reading his mind, Pat. In short, this basically presupposes that space is supposed to be a playground for the idle rich with nothing better to do with their money. The extrapolation of the Russian ISS tourist flights into becoming the future of spaceflight. But remember, this is supposed to be done by "daily trips into space by hundreds or thousands of private citizens by multiple vehicle types" so apparently there are a hell of a lot more idle rich in the future than nowadays, There will be, of course barring some planetary catastrophe. and the "Jet Set" has been replaced by the "Rocket Riche". As for myself, if I ever became wealthy, I'd still enjoy the simple things in life; the good bottle of wine, the fine aged cheddar, inviting my friends on quail hunts and "accidentally" shooting them, and occasionally being the power behind the throne of a weakling president. Who needs space adventures when you can do stuff like that? But that's just me. Yes. It is just you. Now about that evil NASA having little involvment...who the hell do you think built those giant radio telescopes on the far side of the Moon? I didn't say NASA had no involvement (though in fact, I suspect that it would be NSF that builds them, rather than NASA). "...other than to take advantage of the dramatic reductions in cost and dramatic improvements in technology to do those things that only it can do, such as expeditions to the outer planets." Hell, Bill Gates could probably finance a manned Mars mission right now if he felt like it. He could. He obviously doesn't feel like it. What's your point? |
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Brian Thorn wrote:
On 19 Feb 2006 09:08:35 -0800, "Ed Kyle" wrote: Russia has launched and returned from orbit an 18 seat capacity (some unoccupied on six manned flights during 2003-2005, as well as launching 11 separate Progress supply missions. The U.S. managed only one semi-successful mission during the same period carrying six astronauts. Seven. Ooops. Seven. Still less than Russia's 2003-2005 total. And Shuttle delivered more cargo to ISS on STS-114 than all of the Progress flights in 2005. Are you sure about that? I've read that STS-114 only delivered a bit more than 2 tonnes of actual net cargo to ISS (although it had more than 11 tonnes of stuff in its payload bay). On the other hand, each Progress M1 can deliver up to 2.2 tonnes to ISS. There were four Progress missions in 2005, four in 2004, and three in 2003, providing more than 24 tonnes of cargo capacity to the station during a time when NASA apparently only managed about 2 tonnes. - Ed Kyle |
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![]() Ed Kyle wrote: I am puzzled by Griffin's House committee statement of 2/16/06. There is not much to be puzzled about. The entire idiotic city of Washington D.C became GM obsolete 50 years ago when nuclear power, solar power, bio-power, and composite materiials werre developed, but the sand-walkers just don't have vision beyond Wal-Mart. And the entire idiotic Boeing Aerospace Corporation became an AT&T Coop institutionalized relic of the 19th Century when holograms, Turing Machines, and Robotics were invented and they just can't accept the end. In it ("http://www.spaceref.com/news/viewsr.html?pid=19658") He says: "There are several reasons not to delay the CEV further. First and foremost is increased risk to the Vision due to an extended gap in our Nation's ability to launch humans into space. ... A longer gap in U.S. human spaceflight capabilities will increase risk and overall costs and lead to even more delays. In addition, the U.S. may risk a perceived, if not a real, loss of leadership in space exploration if we are unable to launch our astronauts into space for an extended period when other nations are establishing or building on their own abilities to do so." During the same presentation, Griffin said: "NASA needed to take budgeted funds from the Science and Exploration budget projections for FY 2007-11 in order to ensure that enough funds were available to the Space Shuttle and the ISS. Thus, NASA cannot afford the costs of starting some new space science missions, like a mission to Jupiter's moon Europa, or the nextgeneration space astrophysics missions beyond the James Webb Space Telescope, at this time." In my opinion, the only "leadership" that the U.S. currently provides in space is in the unmanned science and exploration efforts that Griffin is proposing to gut. The U.S. long ago lost its leadership position in manned spaceflight to Russia, which for the past several years has provided the only seat-rides to orbit. The International Space Station itself is built around a Russian core. It seems to me that Griffin's plans will simply eliminate U.S. unmanned space science leadership for the return of only getting NASA back on a par with the Russians in manned flight. A better approach, IMO, would have been to shut shuttle down three years ago. A slightly less better approach might be to shut it down now. - Ed Kyle |
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On 19 Feb 2006 17:30:06 -0800, "Ed Kyle" wrote:
Brian Thorn wrote: On 19 Feb 2006 09:08:35 -0800, "Ed Kyle" wrote: Russia has launched and returned from orbit an 18 seat capacity (some unoccupied on six manned flights during 2003-2005, as well as launching 11 separate Progress supply missions. The U.S. managed only one semi-successful mission during the same period carrying six astronauts. Seven. Ooops. Seven. Still less than Russia's 2003-2005 total. And Shuttle delivered more cargo to ISS on STS-114 than all of the Progress flights in 2005. Are you sure about that? I've read that STS-114 only delivered a bit more than 2 tonnes of actual net cargo to ISS (although it had more than 11 tonnes of stuff in its payload bay). Well, the STS-114 Press Kit is irritatingly vague, focusing instead on all the post-Columbia safey mods. But it does say Rafaello weighed 18,166 lbs. at launch. Considering that an empty MPLM weighs 9,000 lbs., it looks like about 9,000 lbs. of cargo in the MPLM to me. Plus all the water Discovery offloaded to ISS and the replacement CMG in the payload bay. "The MPLM weight at launch, with the cargo it contains, will be 18,166 pounds." Also, the Press Kit says total payload for STS-114 was 29,725 lbs. not 11 tons. "Space Shuttle Discovery will carry a variety of payloads. The flight will carry 29,725 pounds of equipment and supplies in its cargo bay to the International Space Station. When Discovery lands, it will return with 25,121 pounds of equipment in its cargo bay." Brian |
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![]() Brian Thorn wrote: On 19 Feb 2006 17:30:06 -0800, "Ed Kyle" wrote: Brian Thorn wrote: On 19 Feb 2006 09:08:35 -0800, "Ed Kyle" wrote: Russia has launched and returned from orbit an 18 seat capacity (some unoccupied on six manned flights during 2003-2005, as well as launching 11 separate Progress supply missions. The U.S. managed only one semi-successful mission during the same period carrying six astronauts. Seven. Ooops. Seven. Still less than Russia's 2003-2005 total. And Shuttle delivered more cargo to ISS on STS-114 than all of the Progress flights in 2005. Are you sure about that? I've read that STS-114 only delivered a bit more than 2 tonnes of actual net cargo to ISS (although it had more than 11 tonnes of stuff in its payload bay). Well, the STS-114 Press Kit is irritatingly vague, focusing instead on all the post-Columbia safey mods. But it does say Rafaello weighed 18,166 lbs. at launch. Considering that an empty MPLM weighs 9,000 lbs., it looks like about 9,000 lbs. of cargo in the MPLM to me. Plus all the water Discovery offloaded to ISS and the replacement CMG in the payload bay. "The MPLM weight at launch, with the cargo it contains, will be 18,166 pounds." Also, the Press Kit says total payload for STS-114 was 29,725 lbs. not 11 tons. Right. 13.48 tonnes in payload bay up. 11.39 tonnes in payload bay down. I should have said "more than 11 tonnes of additional stuff". "Space Shuttle Discovery will carry a variety of payloads. The flight will carry 29,725 pounds of equipment and supplies in its cargo bay to the International Space Station. When Discovery lands, it will return with 25,121 pounds of equipment in its cargo bay." That is a 2.09 metric ton (tonne) up/down differential, but no mention of how much mass was brought down from ISS. Irritating, yes, that NASA didn't bother to mention how much mass was taken to and returned from ISS. I would be surprised if they hauled 2 tonnes of garbage down. - Ed Kyle |
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![]() "Ed Kyle" wrote in message ups.com... Michael Kent wrote: Russia has launched and returned from orbit an 18 seat capacity (some unoccupied on six manned flights during 2003-2005, as well as launching 11 separate Progress supply missions. The U.S. managed only one semi-successful mission during the same period carrying six astronauts. I hate to say it, but we cannot ignore the fact that the U.S. shuttle killed all of the astronauts it launched in 2003 - more astronauts in one accident than have ever died in all Russian space disasters combined. It has also launched more than twice as much in one launch than any Russian craft has. These stats are meaningless. Hard the cargo bay been full of passengers it wouldn't have changed the overall safety of the program at all. The fact is that the U.S. space shuttle is a flawed system that has failed to maintain a U.S. human presence in space, in stark contrast to Russia's Soyuz system. Yes, too bad the Russians haven't been able to live up to their promises for number of Soyuz and Progress craft. |
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"Ed Kyle" wrote in
oups.com: That is a 2.09 metric ton (tonne) up/down differential, but no mention of how much mass was brought down from ISS. Irritating, yes, that NASA didn't bother to mention how much mass was taken to and returned from ISS. I would be surprised if they hauled 2 tonnes of garbage down. I wouldn't. There hadn't been a shuttle to ISS in two and a half years, and Progress is limited in the amount of garbage it can haul (both hatch diameter and CG limits). -- JRF Reply-to address spam-proofed - to reply by E-mail, check "Organization" (I am not assimilated) and think one step ahead of IBM. |
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