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Dr John Stockton wrote:
[...] Since the acceleration, if at all strong, need only be relatively brief, it should be perfectly possible to work with only the solar energy from fixed arrays. A brief (as in less than 1 day) period of acceleration would require considerable effort to brace. The solar arrays have detectable responses to docking and reboosts as it is. I suspect that any "chemical rocket" type of boost of sufficient magnitude for journey would be tough on the joints even with the solar arrays removed. A long, low thrust acceleration, such as an ion drive, would be easier to use, as the OP noted in reference to spiralling out, but then you get into the issue of sun angles and VAB radiation damage. There's a thread somewhere in which a poster recommends multiple small ion drives to distribute the loads over the structure in a gentler manner. /dps -- Using Opera's revolutionary e-mail client: http://www.opera.com/m2/ |
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Dr John Stockton wrote:
Dec 2004 07:57:45, seen in news:sci.space.station, Derek Lyons posted : "Revision" k@tdot-com wrote: The ISS should be moved to the L1 point. Russia, China, or ESA could do it. Maybe in about two or three centuries when they have handwavium drives and unobtanium fuel. Otherwise, the electronics on the ISS are fried after the transit through Van Allen belts as with current technology the only way to move something that big and heavy is to spiral out slowly. (In particular, the solar arrays won't stand much acceleration.) With the technology needed to give ISS a significant acceleration, we would certainly have also the technology to add such rigging as is needed to rigidise the solar arrays. Consider that the technology of 1805 could brace masts carrying sails against strong winds; and we have better materials for ropes than they had. The ropes of 1805 were used to brace stiff masts to stiff decks. Bracing flexible solar arrays with flexible ropes is quite a different matter. Since the acceleration, if at all strong, need only be relatively brief, it should be perfectly possible to work with only the solar energy from fixed arrays. Since the acceleration, if at all strong, will likely exceed the structural strength of the station... That's a moot point. Those who "sail" below the sea may tend to forget what *real* sailors could do. Nope. We are quite mindful of what 'real' sailors can do. We are also quite mindful of reality and engineering. D. -- Touch-twice life. Eat. Drink. Laugh. -Resolved: To be more temperate in my postings. Oct 5th, 2004 JDL |
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JRS: In article opsiyna7ptemtzlb@d3h1pn11, dated Mon, 13 Dec 2004
11:05:21, seen in news:sci.space.station, D Schneider posted : Dr John Stockton wrote: [...] Since the acceleration, if at all strong, need only be relatively brief, it should be perfectly possible to work with only the solar energy from fixed arrays. A brief (as in less than 1 day) period of acceleration would require considerable effort to brace. The solar arrays have detectable responses to docking and reboosts as it is. I suspect that any "chemical rocket" type of boost of sufficient magnitude for journey would be tough on the joints even with the solar arrays removed. In FFU, the speed change needed would be of the order of 25000-18000 = 7000 mph = 10000 fps; spread over a day, that's only a little over a tenth of a gee. That may well be hard to accommodate by bolt-on reinforcement, but it would be trivial to deal with if proper nautical-type rigging were used. ISS would be fitted with a long bowsprit, itself braced with spreaders and rigging, and lines would go from the end of that to points on the solar arrays - along the centre line, and along the edges too if needed - with further stays running aft, etc. We're assuming the ability to launch 10000 fps * 500 tons of propulsion; the mast and rigging would be an insignificant added burden; consult the designers of the current holder of the America's Cup. One would want the new engine system to be gentle in starting and stopping. -- © John Stockton, Surrey, UK. / © Web URL:http://www.merlyn.demon.co.uk/ - FAQish topics, acronyms, & links. Correct = 4-line sig. separator as above, a line precisely "-- " (SoRFC1036) Do not Mail News to me. Before a reply, quote with "" or " " (SoRFC1036) |
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Dr John Stockton wrote:
That may well be hard to accommodate by bolt-on reinforcement, but it would be trivial to deal with if proper nautical-type rigging were used. ISS would be fitted with a long bowsprit, itself braced with spreaders and rigging, and lines would go from the end of that to points on the solar arrays - along the centre line, and along the edges too if needed - with further stays running aft, etc. Don't forget a carved figurehead of Mary Shafer attached to PMA-2 (-z side). -- Reed |
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Dr John Stockton,
Clearly there's still an ongoing GOOGLE "Server error" as they'd like to call it, that which is clearly hindering my posting replies even into my own topics. In spite of that ongoing orchestrated opposition, I'll attempt to reply to what "Dr John Stockton" was suggesting as being a fairly good notion of securing whatever's necessary by using cables, ropes or whatever is suitable as rigging that'll take all of the stress that could possibly be induced by continually thrusting ISS for 10+ hours, or even 100+ hours if limited to 0.01 m/s/s. If need be, I'll edit this into my growing topics page or create yet another entirely specific report as to addressing these and other issues, whereas there's darn little if anything the mainstream status quo can manage as to foil my efforts at sharing upon whatever I believe is worth doing, or at least openly discussing. Frankly, I and apparently a few others thar reside outside of the NASA/Apollo box foresee nothing that's insurmountable about relocating ISS into the ME-L1 nullification sweet-spot. However, it's as though our NASA want's nothing better than seeing the likes of ISS and Hubble bite the dust. Perhaps they're wagering good odds on the failure of the next resupply mission, and if need be their Boeing/TRW Phantom Works ABL team could perhaps accomplish some of their field testing that'll essentially kill off two birds with one friendly cannon shot. Regards, Brad GUTH / GASA~IEIS http://guthvenus.tripod.com/gv-topics.htm |
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Relocation of ISS to ME-L1; as for getting ISS away from mother Earth.
There's an interesting topic ongoing of a helium fusion powered rocket engine that's worth a good look-see, especially if this technology might be applied to something like the ISS. I've tried to impose upon this recent topic with respect to the possibilities of salvaging something like ISS. Although, all that's transpired is more of their usual banishment upon absolutely anything having to do with whatever I'm interested in, or perhaps of anything that might actually benefit humanity is being summarily rejected just out of spite. Subject: The Ultimate Engine http://groups-beta.google.com/group/...b872da42a00cfd I'm actually totally impressed but, are we talking R&D of months, years or what? For example, the notion of relocating ISS needs a great deal of sustained thrust energy, but perhaps only 10 hours worth of .1 m/s/s acceleration as to obtaining another 3.3 km/s on top of the existing 7.7 km/s. If need be 0.01 m/s/s of 100 hours. I totally agree that appropriate rigging as suggested by "Dr John Stockton", as applied in order to sufficiently brace whatever's flimsy about ISS is doable, especially if that rate of acceleration were limited to 0.01 m/s/s, thus taking a bit long as to bust ISS lose from Earth's gravity, whereas 1 m/s/s should make things a wee bit testy, although doable if absolutely everything was secured. My previously banished questions for the GOOGLE wizards of "The Ultimate Engine" topic were and still are; 1) Is there any chance this fusion engine could directly or indirectly utilize the likes of lunar He3 as fuel? 2) Doesn't the storage of helium (much like hydrogen) or even He3 require a fair amount of space? 3) As for a spacecraft taking along the required 25 MeV energy resource into account, what's the net fusion energy per kg of helium that's actually available or leftover for thrust? Even frozen/liquid helium should be a rather testy substance, in that a fairly good amount of insulation becomes a bit more than a slight issue, as well as for pressurized storage is yet another option. Unless the few kg worth of said Helium that's supposedly good for the 9e16 J/kg is all that's needed for achieving this rocket engine fuel requirement, that's solely responsible for creating 603e12 Joules worth of thrust per kg of said helium is actually obtainable. It seems as though, their coming up with the necessary product of 25 MeV and of whatever mega+ joules that portion represents, as extracted from some mystical auxiliary power source that's capable of going along for the ride, just might impose another good number of cubic meters plus whatever tonnes of something other that's not going to operate all by itself. I believe the age old physics law of energy input must equal energy output still holds true. So, I guess that I don't quite understand from where's such 25 MeV and the good number of joules that this fusion energy resource potentially represents is coming from. An electrodynamic or some other tether dipole energy-extractor might suggest upon such an alternative as for coming up with the 25 MeV, such as the one I've associated with the LSE-CM/ISS dipole tether element having a primary element that's obviously connected to the moon, and otherwise the other element of this dipole is deployed towards mother Earth, as coming to within the magnetosphere where the termination CM or tethered instrument platform that's hosting a few of those 100 GW laser cannons are situated as cruising perhaps 50,000 km from Earth, even a bit closer if you'd dare. Regards, Brad GUTH / GASA~IEIS http://guthvenus.tripod.com/gv-topics.htm |
#27
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Dr John Stockton,
Clearly there's still an ongoing "Server error" as they'd like to call it, that which is clearly hindering my posting replies even into my own topics. In spite of that ongoing orchestrated opposition, I'll attempt to reply to what "Dr John Stockton" was suggesting as being a fairly good notion of securing whatever's necessary by using cables, ropes or whatever is suitable as rigging that'll take all of the stress that could possibly be induced by continually thrusting ISS for 10+ hours, or even 100+ hours if limited to 0.01 m/s/s. If need be, I'll edit my growing topics page or create yet another entirely specific report as to addressing these and other issues, whereas there's darn little if anything the mainstream status quo can do as to foil my efforts at sharing upon whatever I believe is worth doing, or at least openly discussing. Frankly, I foresee nothing insurmountable about relocating ISS into the ME-L1 sweet-spot. Regards, Brad GUTH / GASA~IEIS http://guthvenus.tripod.com/gv-topics.htm |
#28
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Relocation of ISS to ME-L1; getting ISS away from mother Earth
There's an ongoing topic of a helium fusion powered rocket engine that's worth a good look-see if this might be applied to something like the ISS. I've tried to impose upon this recent topic with respect to the possibilities of salvaging something like ISS. Although, all that's transpired is their usual banishment upon absolutely anything having to do with whatever I'm interested in, or perhaps of anything that might actually benefit humanity is being summarily rejected just out of spite. Subject: The Ultimate Engine http://groups-beta.google.com/group/...b872da42a00cfd I'm actually totally impressed but, are we talking R&D of months, years or what? For example, the notion of relocating ISS needs a great deal of sustained thrust energy, but perhaps only 10 hours worth of .1 m/s/s acceleration as to obtaining another 3.3 km/s on top of the existing 7.7 km/s. If need be 0.01 m/s/s of 100 hours. I totally agree that appropriate rigging as suggested by "Dr John Stockton", as applied in order to sufficiently brace whatever's flimsy about ISS is doable, especially if that rate of acceleration were limited to 0.01 m/s/s, thus taking a bit long as to bust ISS lose from Earth's gravity, whereas 1 m/s/s should make things a wee bit testy, although doable if absolutely everything was secured. My questions for the wizards of "The Ultimate Engine" topic were and still are; 1) Is there any chance this fusion engine could directly or indirectly utilize the likes of lunar He3 as fuel? 2) Doesn't the storage of helium (much like hydrogen) or even He3 require a fair amount of space? 3) As for a spacecraft taking along the required 25 MeV energy resource into account, what's the net fusion energy per kg of helium that's actually available or leftover for thrust? Even frozen/liquid helium should be a rather testy substance, in that a fairly good amount of insulation becomes a bit more than a slight issue, as well as for pressurized storage is yet another option. Unless the few kg worth of said Helium that's supposedly good for the 9e16 J/kg is all that's needed for achieving this rocket engine fuel requirement, that's solely responsible for creating 603e12 Joules worth of thrust per kg of said helium is actually obtainable. It seems as though, their coming up with the necessary product of 25 MeV and of whatever mega+ joules that represents, as extracted from some mystical auxiliary power source that's capable of going along for the ride just might impose another good number of cubic meters plus whatever tonnes of something other that's not going to operate all by itself. I believe the physics law of energy input must equal energy output still holds true. So, I guess that I don't quite understand from where's the 25 MeV and the number of joules that this fusion energy resource represents is coming from. An electrodynamic or some other tether dipole energy extractor might suggest upon such an alternative as for coming up with the 25 MeV, such as the one I've associated with the LSE-CM/ISS dipole tether element having a primary element that's obviously connected to the moon, and otherwise the other element of this dipole is deployed towards mother Earth, as coming to within the magnetosphere where the termination CM or tethered instrument platform that's hosting a few of those 100 GW laser cannons are situated as cruising perhaps 50,000 km from Earth, even a bit closer if you'd dare. Regards, Brad GUTH / GASA~IEIS http://guthvenus.tripod.com/gv-topics.htm |
#29
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Relocation of ISS to ME-L1; getting ISS away from mother Earth
There's an ongoing topic of a helium fusion powered rocket engine that's worth a good look-see if this might be applied to something like the ISS. I've tried to impose upon this recent topic with respect to the possibilities of salvaging something like ISS. Although, all that's transpired is their usual banishment upon absolutely anything having to do with whatever I'm interested in, or perhaps of anything that might actually benefit humanity is being summarily rejected just out of spite. Subject: The Ultimate Engine http://groups-beta.google.com/group/...b872da42a00cfd I'm actually totally impressed but, are we talking R&D of months, years or what? For example, the notion of relocating ISS needs a great deal of sustained thrust energy, but perhaps only 10 hours worth of .1 m/s/s acceleration as to obtaining another 3.3 km/s on top of the existing 7.7 km/s. If need be 0.01 m/s/s of 100 hours. I totally agree that appropriate rigging as suggested by "Dr John Stockton", as applied in order to sufficiently brace whatever's flimsy about ISS is doable, especially if that rate of acceleration were limited to 0.01 m/s/s, thus taking a bit long as to bust ISS lose from Earth's gravity, whereas 1 m/s/s should make things a wee bit testy, although doable if absolutely everything was secured. My questions for the wizards of "The Ultimate Engine" topic were and still are; 1) Is there any chance this fusion engine could directly or indirectly utilize the likes of lunar He3 as fuel? 2) Doesn't the storage of helium (much like hydrogen) or even He3 require a fair amount of space? 3) As for a spacecraft taking along the required 25 MeV energy resource into account, what's the net fusion energy per kg of helium that's actually available or leftover for thrust? Even frozen/liquid helium should be a rather testy substance, in that a fairly good amount of insulation becomes a bit more than a slight issue, as well as for pressurized storage is yet another option. Unless the few kg worth of said Helium that's supposedly good for the 9e16 J/kg is all that's needed for achieving this rocket engine fuel requirement, that's solely responsible for creating 603e12 Joules worth of thrust per kg of said helium is actually obtainable. It seems as though, their coming up with the necessary product of 25 MeV and of whatever mega+ joules that represents, as extracted from some mystical auxiliary power source that's capable of going along for the ride just might impose another good number of cubic meters plus whatever tonnes of something other that's not going to operate all by itself. I believe the physics law of energy input must equal energy output still holds true. So, I guess that I don't quite understand from where's the 25 MeV and the number of joules that this fusion energy resource represents is coming from. An electrodynamic or some other tether dipole energy extractor might suggest upon such an alternative as for coming up with the 25 MeV, such as the one I've associated with the LSE-CM/ISS dipole tether element having a primary element that's obviously connected to the moon, and otherwise the other element of this dipole is deployed towards mother Earth, as coming to within the magnetosphere where the termination CM or tethered instrument platform that's hosting a few of those 100 GW laser cannons are situated as cruising perhaps 50,000 km from Earth, even a bit closer if you'd dare. Regards, Brad GUTH / GASA~IEIS http://guthvenus.tripod.com/gv-topics.htm |
#30
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Relocation of ISS to ME-L1; getting ISS away from mother Earth
There's an ongoing topic of a helium fusion powered rocket engine that's worth a good look-see if this might be applied to something like the ISS. I've tried to impose upon this recent topic with respect to the possibilities of salvaging something like ISS. Although, all that's transpired is their usual banishment upon absolutely anything having to do with whatever I'm interested in, or perhaps of anything that might actually benefit humanity is being summarily rejected just out of spite. Subject: The Ultimate Engine http://groups-beta.google.com/group/...b872da42a00cfd I'm actually totally impressed but, are we talking R&D of months, years or what? For example, the notion of relocating ISS needs a great deal of sustained thrust energy, but perhaps only 10 hours worth of .1 m/s/s acceleration as to obtaining another 3.3 km/s on top of the existing 7.7 km/s. If need be 0.01 m/s/s of 100 hours. I totally agree that appropriate rigging as suggested by "Dr John Stockton", as applied in order to sufficiently brace whatever's flimsy about ISS is doable, especially if that rate of acceleration were limited to 0.01 m/s/s, thus taking a bit long as to bust ISS lose from Earth's gravity, whereas 1 m/s/s should make things a wee bit testy, although doable if absolutely everything was secured. My questions for the wizards of "The Ultimate Engine" topic were and still are; 1) Is there any chance this fusion engine could directly or indirectly utilize the likes of lunar He3 as fuel? 2) Doesn't the storage of helium (much like hydrogen) or even He3 require a fair amount of space? 3) As for a spacecraft taking along the required 25 MeV energy resource into account, what's the net fusion energy per kg of helium that's actually available or leftover for thrust? Even frozen/liquid helium should be a rather testy substance, in that a fairly good amount of insulation becomes a bit more than a slight issue, as well as for pressurized storage is yet another option. Unless the few kg worth of said Helium that's supposedly good for the 9e16 J/kg is all that's needed for achieving this rocket engine fuel requirement, that's solely responsible for creating 603e12 Joules worth of thrust per kg of said helium is actually obtainable. It seems as though, their coming up with the necessary product of 25 MeV and of whatever mega+ joules that represents, as extracted from some mystical auxiliary power source that's capable of going along for the ride just might impose another good number of cubic meters plus whatever tonnes of something other that's not going to operate all by itself. I believe the physics law of energy input must equal energy output still holds true. So, I guess that I don't quite understand from where's the 25 MeV and the number of joules that this fusion energy resource represents is coming from. An electrodynamic or some other tether dipole energy extractor might suggest upon such an alternative as for coming up with the 25 MeV, such as the one I've associated with the LSE-CM/ISS dipole tether element having a primary element that's obviously connected to the moon, and otherwise the other element of this dipole is deployed towards mother Earth, as coming to within the magnetosphere where the termination CM or tethered instrument platform that's hosting a few of those 100 GW laser cannons are situated as cruising perhaps 50,000 km from Earth, even a bit closer if you'd dare. Regards, Brad GUTH / GASA~IEIS http://guthvenus.tripod.com/gv-topics.htm |
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