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Cardman wrote:
NASA's current plan is not such a bad start for going down this grander colonization route. Their main issue is to try and minimise their launch costs. Huh? Either you are seriously deluded about how much this "plan" will cost, or you are expressing yourself very poorly. Also I just cannot see that digging long tunnels and open caverns into the ground can be done efficiently using remote controlled robots. It may be possible, but such projects on Earth usually need quite a lot of human assistance. NASA just announced a competition for digging robots as part of the Centennial Challenges. |
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On Fri, 23 Sep 2005 11:34:26 GMT, Alan Anderson
wrote: Cardman wrote: NASA's current plan is not such a bad start for going down this grander colonization route. Their main issue is to try and minimise their launch costs. Huh? Either you are seriously deluded about how much this "plan" will cost, or you are expressing yourself very poorly. They would have a lot to launch from Earth. So getting the best launch price per kg is the ideal. A resulting low cost launch market can better help future trade between these two places. Also I just cannot see that digging long tunnels and open caverns into the ground can be done efficiently using remote controlled robots. It may be possible, but such projects on Earth usually need quite a lot of human assistance. NASA just announced a competition for digging robots as part of the Centennial Challenges. Fine for sample collection no doubt, but the words "remote controlled heavy regolith moving vehicles" sounds much better, even if the "heavy" part is bound to be a lot more light weight. So a remote controlled bulldozer, digger, and at least two dumper trucks, and they are all set to move lots of regolith. Cardman. |
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Cardman wrote:
On Fri, 23 Sep 2005 11:34:26 GMT, Alan Anderson wrote: Cardman wrote: NASA's current plan is not such a bad start for going down this grander colonization route. Their main issue is to try and minimise their launch costs. Huh? Either you are seriously deluded about how much this "plan" will cost, or you are expressing yourself very poorly. They would have a lot to launch from Earth. So getting the best launch price per kg is the ideal. A resulting low cost launch market can better help future trade between these two places. Low launch cost is an appropriate goal. However, it's not even remotely part of "NASA's current plan", much less "their main issue". Also I just cannot see that digging long tunnels and open caverns into the ground can be done efficiently using remote controlled robots. It may be possible, but such projects on Earth usually need quite a lot of human assistance. NASA just announced a competition for digging robots as part of the Centennial Challenges. Fine for sample collection no doubt,... http://www.nasa.gov/home/hqnews/2005...moon_dirt.html says it's for excavating, with an emphasis on quantity. That's rather far from "sample" collection. |
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J.J.
You're making far too much sense with using superior robotics that should be at least a 1000:1 improvement over anything that can be accomplished by a few LLPOF humans, except for that little part about "just to do it again" since we never did it in the first place. - How much near-surface Radon (Rn-222) can the lunar environment offer? How much raw Radium (RA-226) can the moon itself provide? ~ Life upon Venus, a township w/Bridge & ET/UFO Park-n-Ride Tarmac: http://guthvenus.tripod.com/gv-town.htm The Russian/China LSE-CM/ISS (Lunar Space Elevator) http://guthvenus.tripod.com/lunar-space-elevator.htm Venus ETs, plus the updated sub-topics; Brad Guth / GASA-IEIS http://guthvenus.tripod.com/gv-topics.htm War is war, thus "in war there are no rules" - In fact, war has been the very reason of having to deal with the likes of others that haven't been playing by whatever rules, such as GW Bush. |
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This next honest color photo contribution isn't even nearly as good as
the true to life Kodak originals via those NASA/Apollo shots as having their Kodak moments obtained robotically from nearby orbiting of the reactive moon way back in the late 1960s and early 1970s, but it's certainly a whole lot more reliable than having seen our moonsuit astronauts strolling through such extensive lunar near white-out zones of cornmeal and portland cement for as far as their unfiltered Kodak eye could see. Apparently the closer NASA/Apollo get to our comet like lunar surface, the brighter it all gets and, most colors (especially of any UV contributions and of subsequently generated near-blue) entirely vanishes, even basalt moon rocks become a gray composite that better than 55% reflective and somewhat eroded at that. And to think, they've built massive and spendy museums and commercial display sites of educational/entertainment impact that's fortifying if not fornacating upon this near white-out concept that's anything but dusty, much less the truth. Our Colorful Moon : http://www.rc-astro.com/img/moon_colors_2005-04-18.jpg All images and site content are Copyright =A92002-2005 by Russell Croman. =A9 2005 Russell Croman, www.rc-astro.com http://www.rc-astro.com/contact.htm The colors in the Moon image are real, in a sense, Croman explained. "To bring out the differences between the various regions, the color saturation has been greatly enhanced," he explained. "The hues are correct." "Differences in color on the lunar surface indicate different ages and types of materials. Croman offers prints of this and other space images." Too bad that such incest cloned borg bigots have mutated as to being color blind as were those TBI and micro meteorite proof Apollo astronauts and of their unfiltered Kodak moments, except that wherever it comes to involving real people, especially non-Jewish/Muslim folks that don't even seem to count as humans to our KKK/NASA and obviously the Third Reich likes of their rusemasters as having been hard at work. That's why I asked of the all-knowing lords and rusemasters Art Deco and Bookman, do you even have any of those token blacks as minions working within your brown-nosed staff? (apparently not). This terrestrial obtained moon shot by Russell Croman is basically a good 2:1 if not 4:1 brighter overall than the moon actually is if otherwise viewed from orbiting the moon at 100 km. Although, because there's nothing of albedo reference, such as having a portion of an illuminated Apollo spacecraft or that of mother Earth or even the truly horrific intensity of Venus as could have been easily viewed from lunar orbit and most certainly from the deck itself, is why this image is offering us such a nicely exposed frame that's as illuminated as it is, instead of the average 11~12% albedo that's actually the darker and nastier case. Even the official NASA/Apollo image archives that haven't been PhotoShop altered proves that I'm telling the truth and nothing but the truth, and lo and behold if there hasn't been other satellite obtained color images since, that more than sufficiently nails the lunar albedo and true color on the head to boot. Even "tj Frazir" knows for a matter of fact that there are deep blue portions of our moon, and otherwise mostly vast zones of dark golden-brown portions with loads of nearly coal black exposed basalt and mostly covered by local and ET deposits of iron and titanium plus having been carbon soot coated for good measure. Not half bad for what's left of such an icy proto-moon that arrived on behalf of creating our salty oceans with a sal****er icy diameter of perhaps 4000 km. Oops, I guess those comet like sodium trails of 900,000 km never existed. Leonids on the Moon http://science.nasa.gov/headlines/y2000/ast26oct_1.htm Of course this trail affect had been spotted before but went either misunderstood or merely excluded because it didn't quite fit within the status quo holy grail of our NASA/Apollo science. The sodium cloud has actually been visible to the naked eye, however a spectrum band-pass filter of the yellow-green (somewhat greenish mustard) tint of sodium works best. A search for "moon sodium" or "sodium trail" should get lots more than you'll actually need to know about. Wherever there's a trail of sodium there's got to be a good cash of O2 since the portion of O2 is roughly 50% of the vaporised basalt and, it seems the sodium(Na2O) content is usually contributing something less than 4%. Therefore, if the lunar basalt had been vaporised upon impact as to releasing the sodium, then also the O2 had to have been released along with most all the other elements of lunar basalt, thus having created a fairly substantial atmospheric population of closely packed atoms near the lunar surface (especially of the nighttime/earthshine surface), starting with perhaps having to blend in with several meters worth of radon, then other elements as made available via the natural process of the lunar core outgassing, and of course via those impacts that would have piled their lighter elements well above the surface clinging of whatever radon as mixed along with a good amount of local argon and perhaps having CO2 essentially as the icing on top of one another until the lighter sorts of basalt released O2 and of the sodium portion that was simply far too light of an element for the lunar gravity to hold onto, especialy once having been further impacted by the solar influx worth of additional heating plus otherwise the likes of sodium as easily excavated by the 300+km/s solar winds. Raw as nearly pure basalt of 3.1 g/cm3 (as having been processed into a basalt fiber density =3D 2.7~2.75 g/cm3), contains little if any carbon, but offers these primary elements: SiO2 58.7 Al2O3 17.2 Fe2O3 10.3 MgO 3.82 CaO 8.04 Na2O 3.34 K2O 0.82 TiO2 1.16 P2O5 0.28 MnO 0.16 Cr2O3 0.06 Other items cruising through space seem to have provided a sodium trail, thus our moon is basically a very large comet like item that's still capable of releasing the likes of sodium, which certainly has to represent that it's also capable of releasing other elements in even greater volumes and mass, although perhaps a bit less noticeable unless you're specifically focused and spectrum filtered upon identifying such. http://www.americanwest.com/pages/uncomnws.htm Sodium gas trail discovered behind the Hale-Bopp comet Update 4/20/97: "Astronomers say the have found a third tail trailing behind the Hale-Bopp comet - a thin straight jet of sodium gas unlike any other seen before, The Boston Globe reported yesterday. The discovery was made Friday by a team of astronomers at the Isaac Newton Group of telescopes in the Canary Islands. The scientists were at a loss to explain how the sodium tail was created. The astronomers used a filter over a telescope that allowed them to detect the light given off by sodium gas, the same yellow glow seen in ordinary sodium-vapor street lamps. Astronomers have long known that comets have two types of tails - one made of dust and the other of electrically charged gas called plasma. They have also known that comets contain sodium, but had never seen it before in the form of a tail." Perhaps using a deep-green band-pass filter for selectively imaging whatever trail or atmosphere there is of lunar O2 is just a matter of someone doing just that. Although at times our own polluted atmosphere acts as an optical spectrum band-pass filter that's even a bit photon reactive all on it's own. Although for the most part O2 should stick around, though not nearly as good as radon. ~ Life upon Venus, a township w/Bridge & ET/UFO Park-n-Ride Tarmac: http://guthvenus.tripod.com/gv-town.htm The Russian/China LSE-CM/ISS (Lunar Space Elevator) http://guthvenus.tripod.com/lunar-space-elevator.htm Venus ETs, plus the updated sub-topics; Brad Guth / GASA-IEIS http://guthvenus.tripod.com/gv-topics.htm War is war, thus "in war there are no rules" - In fact, war has been the very reason of having to deal with the likes of others that haven't been playing by whatever rules, such as GW Bush. |
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J.J.,
Apparently lord/rusemaster B1ackwater pullued his own usenet plug, How about we discuss going back to our moon for the very first time, so as to get an honest to God grasp upon whatever the lunar atmosphere is actually all about. Of course, I'm speaking robotically since it's so downright hot, reactive and nasty or otherwise just damn cold and nasty upon our moon. Rather gosh darn pathetically odd that there was never one usenet contribution or even a sub-topic generated as to this perfectly nifty NYT published consideration; Moon's thin atmosphere extends farther than thought http://groups.google.com/group/sci.a...201e82b060a176 FROM THE NEW YORK TIMES: Moon's thin atmosphere extends farther than thought (c) 1995 Copyright Nando.net (c) 1995 N.Y. Times News Service Now researchers at Boston University, who two years ago determined that the rarefied gas bubble surrounding the Moon extended 5,000 miles high, say new studies show that the lunar atmosphere reaches out twice as far. The astronomers, Dr. Michael Mendillo and Dr. Jeffrey Baumgardner of the Center for Space Physics at Boston University, said that during the eclipse the Moon was totally in Earth's shadow, blocking the bright moonlight that obscures observations of gases in the lunar atmosphere. Under these conditions, the astronomers were able to detect the faint glow of sodium gas, which serves as a marker for other gases in the lunar atmosphere. "We were surprised to find that this glow extended to over nine times the radius of the Moon, to a height of about 14,000 kilometers, or 9,000 miles above the Moon's surface," Mendillo said. The researchers say their observations have enabled them to rule out some theories on the origin of the lunar atmosphere. They believe that the most likely explanation is the evaporation of atoms from the lunar surface when it is struck by light particles called photons coming from sunlight. Sodium and other elements escape the surface through erosion caused by the bombardment of photons. The astronomers earlier ruled out a suggestion that the lunar atmosphere was formed by the constant bombardment of the surface by micrometeorites. If the micrometeorite theory was true, they said, the atmosphere would be evenly distributed instead of being irregular in shape, as their measurements indicate. Another theory holds that solar wind -- charged particles streaming from the Sun -- kicks up surface atoms as it lashes the lunar surface. But the researchers said this theory now appeared to be eliminated because Earth's magnetic field traps solar wind and shields the lunar surface during the full-moon phase, when their observations show the tenuous lunar atmosphere fully extended above the surface. - If the regular lunar atmosphere extends out as far as having been reported, then obviously doing the math of what was at the time of Nov. 1993 as detectable at 14,000 km off the lunar deck as being perhaps 100 atoms/cm3 worth of sodium, whereas that certainly represents quit a bit of what's compiled upon the deck, especially since sodium is certainly one of the lighter elements of mass that's associated within the mostly basalt lunar surface that's having been continually giving berth to such sodium gas. Obviously the meteor impacts that contributed a great deal of further insult to injury were subsequently generating massive amounts of additional sodium atmosphere, thereby having co-generated the other vaporised raw elements, such as good old O2 that which wouldn't have been so easily excavated away by the typical hot and nasty gauntlet of solar winds. According to Mike Williams; "The strength of the surface gravity (1.623 m/s/s) isn't the critical factor. What's more significant is the escape velocity (Moon 2.38km/s, Titan 2.65km/s)." "The heavier gas sticks around but the useful gas escapes. The various types of molecules settle down to having the same average kinetic energy, but that means that the lighter molecules move faster than the heavier ones. They move just as fast, in fact, as if the heavier molecules were not present." "There's a piece of JavaScript on this page http://hyperphysics.phy-astr.gsu.edu/hbase/kinetic/kintem.html#c4 that will calculate the average molecular speed given the molecular mass and temperature. N2 molecules (m=28) on Titan (T=-197C) average 260m/s which is about a tenth of the escape velocity. CO2 molecules (m=28) on the Moon (daytime T=107C) average 464m/s which is about a fifth of the escape velocity. That might sound OK, but not all molecules travel at the average velocity, some travel faster and leak away. The Earth isn't able to hold on to hydrogen molecules, and they average about a fifth of Earth's escape velocity." "Radon atoms would travel at an average of 206m/s on the Moon, which suggests that you could build an atmosphere of pure Radon." Of course, for building and sustaining that sort of a radon atmosphere, for that to happen the moon might require having a good amount of Radium(Ra-226) as for generating the Rn-222 gas, although a good amount of raw solar influx and thus secondary/recoil reactions might otherwise accomplish this same task, that plus the matter of fact that our moon is considerably more radiaoactive than Earth should go to waste. ~ Life upon Venus, a township w/Bridge & ET/UFO Park-n-Ride Tarmac: http://guthvenus.tripod.com/gv-town.htm The Russian/China LSE-CM/ISS (Lunar Space Elevator) http://guthvenus.tripod.com/lunar-space-elevator.htm Venus ETs, plus the updated sub-topics; Brad Guth / GASA-IEIS http://guthvenus.tripod.com/gv-topics.htm War is war, thus "in war there are no rules" - In fact, war has been the very reason of having to deal with the likes of others that haven't been playing by whatever rules, such as GW Bush. |
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B1ackwater,
As usual I'm not sure; should this become another topic or sub-topic? KODAK's PHOTOCHROMATIC/AI FILM TO THE BLOODY RESCUE of NASA's SORRY BUTT For mere starters, the Kodak grey card offers a neutral albedo of 0.18(18%), which is somewhat similar to that of new PVC gray pipe (mid tone as illuminated by the atmospherically filtered sunlight and subsequently perceived by the human eye). A lunar form of 12% albedo as a gray-scale tone is getting more into a mid-charcoal or deep slate gray. Photographic examples of albedo as based upon various real world cement/concrete composites, each image having the 18% gray background as color and albedo reference. http://www.epa.gov/heatisland/resour...ce_chap3&4.pdf Because I'm such a nice guy, I've often used the earthshine albedo/flux as being a conservative 50 fold that of moonshine. However, the full Earth along with a typical amount of cloud cover being worth nearly aan lbedo of 38% can actually represent a bit more like 80 times better off than moonshine upon the surface of Earth. Thus 80+lux or lumena or perhaps roughly 8.5 w/m2 and, each watt/m2 (depending upon spectrum or frequency) can contribute 3.8e18 photons/s, thus portions of nighttime upon our moon is getting quite nicely illuminated by earthshine. Earthshine is also somewhat of a bluish tint and thus offers by fare the most sensitivity as to being photo recorded upon film that's extremely extra sensitive to the blue and near-blue spectrum, that which the human eye isn't all that sensitive to, thus all such photographics should have been impacted by their being a fairly noticeable degree of a bluish shift or tint, and/or at the very least the as-is blue of any American flag should have been a fluorescent (extra bright illuminating) glowing amount of blue. http://cc.ysu.edu/physics-astro/star...arch22003.html "The light from the full Earth as seen from the Moon is about 80 times brighter than the light of the full Moon from the surface of Earth." As for "The solar radiation spectrum and Transmission through different media" http://almashriq.hiof.no/lebanon/600...drc/01-09.html http://almashriq.hiof.no/lebanon/600...drc/10-19.html Terrestrial surface UV-a contributes 0.6 to 1.5 mw/cm2 (6 w/m2 to 15 w/m2) as having been extensively filtered/moderated by our atmosphere, however much less of the UV-b get through and almost none of the UV-c passing through the atmospheric gauntlet that's keeing us alive by doing such a good job of being our radiation shield that's worth roughly 10t/m2, but even that's worth a whole lot mot than any artificial methods such a water that's a thousand fold more dense and thus a whole lot more secondary/recoil capable of generating those nasty hard-X-rays. A bright-white moonsuit offers an albedo of 80%, although with extra brighteners (retroreflective additives or micro prism like chemical elements) can push most any super-white moonsuit to better than 85%. An ultra white photo reflectance board is officially worth 0.9(90%) albedo. Truly retroreflective elements of a micro corner cube like coating of such additives can exceed 0.95(95%) albedo, and from that point on it'll take polished aluminum in order to exceed the 0.95 mark. Thus it's reasonably safe to conclude of moonsuits and a good number of white painted items of those Apollo missions can and should be utilized as the albedo reference bench mark, that plus those official photographic gray-scale strips that were actually incorporated within certain images is obviously offering us yet another observational validation as to how gosh darn reflective the average lunar landscape of 55+% for as far as the unfiltered Kodak eye could see was the case, with certain areas or patches as having clearly exceeded 65% (a few even seem nearly a glaring 75%) as compared to a given moonsuit plus other artificial items that we know of for certain were of 80% albedo, and also because supposedly there's insufficient atmosphere as for moderating the illumination intensity and/or having color/spectrum shifting affect upon whatever was included in each of the frames. However, without an atmosphere and taking on the the raw solar UV influx of 118 w/m2 that simply had to have been reacting with everything in sight, plus fairly darn good chances of some of that UV energy creating the near-blue photons of exactly what the secondary/recoil photons should have been creating is somewhat of a mystery, since in none of the images was there any hint of a bluish color skew or that of any black-light generated near-blue, not even fringing of blue or under any direct lighting, shadow or shadow-fill (thus secondary) illumination offered us an example of what the raw solar influx should have provided, especially as being photo recorded without and color spectrum blocking filters or even that of an optical sharp UV cut-off filter, yet the Kodak film somehow managed to exclude all of the UV-a, extra solar near-blue, secondary near-blue and even the bluish earthshine had a zero affect upon what had been recorded. In other words, apparently Kodak had invented their first full-spectrum photochromatic/AI film and ever since having lost that formula. OK folks, someone walked upon a nearly colorless/monotone moon that simply wasn't our moon, thus we're even better at this space-race game and of all the required talents and expertise than anyone ever thought possible, so damn good that we even tossed out all of the fly-by-rocket R&D and every one of the working prototypes. Apparently the moon we'd walked upon had a Xenon spectrum illuminating sun, that of an Earth like planet that was either a bit smaller and/or much further away and at times even having been situated a bit near the horizon, that plus there was no such nearby Venus or the likes of any extremely Kodak bluish-white bright Sirius star system. On this other moon there wasn't but at most a couple of inches of highly clumping moon-dirt that offered nearly 100 g/cm2 worth of easily compacted surface-tension, and lo and behold, it wasn't even the least bit electrostatic nor even all that dark because, the nearby sun had little if any iron or carbon to spare. To top all of that off is that the moon had an invisible atmosphere that nicely protected astronauts from being physically nailed or even the least bit TBI impacted, whereas this was accomplished in part because the density of that moon wasn't the least bit reactive because it must have been made of anti-matter, clumping anti-matter none the less. Silly me, as here I'd though we'd been snookered, when in fact these NASA/Apollo guys are freaking wizards that are beyond any known realms of the ordinary laws of physics. I guuess you don't need any stinking remorse if you're damn near a God like our resident warlord(GW Bush). ~ Life upon Venus, a township w/Bridge & ET/UFO Park-n-Ride Tarmac: http://guthvenus.tripod.com/gv-town.htm The Russian/China LSE-CM/ISS (Lunar Space Elevator) http://guthvenus.tripod.com/lunar-space-elevator.htm Venus ETs, plus the updated sub-topics; Brad Guth / GASA-IEIS http://guthvenus.tripod.com/gv-topics.htm War is war, thus "in war there are no rules" - In fact, war has been the very reason of having to deal with the likes of others that haven't been playing by whatever rules, such as GW Bush. |
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Check out "How Rockets Differ From Jets", and certainly not for
anything regarding "jets" but for all of the other nifty contributions by "tomcat" and myself, such as the latest blast of topic info; http://groups.google.com/group/sci.s...03bae1d059c3d8 tomcat; It may have something to do with 'X amount of energy requirement for a 200 mile high orbit'. Wings or not you have to have 'X amount of energy', they say. "They say" a lot of things. "They say" the mutual gravity-well/nullification zone between us and the moon is roughly 84% of the distance towards the moon, and thereby we're talking 16% of the distance away from the moon. "They say" we've walked upon the moon but, somehow managed to lose all of their related fly-by-rocket lander R&D as well as having lost their Kodak conditional laws of photon and film physics that apparently only applies to our moon. 16% of 384,400 km is 61,504 km away from the center of the moon and thereby 59,766 km off the gravitational center portion of the lunar deck that's always nicely aligned with the gravitational center of mother Earth (actually the Earth CG somewhat moves about as Earth rotates and the moon doesn't seem to budge so much as a micro-degree with respect to the whole of Earth, suggesting that the moon in fact has a slushy core that's somewhat self aligning to the well certified variable CG alignment of mother Earth. With regards to spaceplane wings or perhaps that of one massive aerodynamic foil worth of a waverider spaceplane body, thus affording far more usable interior than any tile covered wing outfitted body as suggested by your "huge gleaming white triangular spaceplane"; Rocket equations take drag into consideration, but not gravity's assistance. While vertical/tubular rockets have drag too, it doesn't apply to them, because they don't have wings for using atmospheric energy. This is why it is true that it takes 'X amount of energy' to do a given amount of work for whatever vehicle is chosen. And, it explains why a 'winged rocket' does so much better than a vertical/tubular rocket. Wings draw energy from gravity itself through the medium of air molecules that are being 'squeezed' to the Earth. So, all in all it means that success will come by making one gigantic monster of a waverider: tomcat's huge gleaming white triangular spaceplane. I see no problem with your bigger is better. Of course folks like "George Evans" seem to think small by way of continually thinking inside the box, as well as having those pesky ulterior motives of saying one thing while acting upon getting something entirely different across. Just wondering a bit; Are you thinking of a 45 degree final atmospheric assent? The composites of what basalt fibers and basalt microballoons as having a degree of CNT involved seems likely of what should eventually become doable. However, of what I've already provided upon existing basalt is just the iceberg tip of what that composite alone can achieve as a structurally insulative material that need not exceed 64 kg/m3 unless the added mass of using more fibers and less balloons becomes a priority. Too bad that what I have to suggest is much like what you have to offer as a plate full of the first, second and third helping, all of which should more than have the inert mass of what any SRB assisted spaceplane and of it's massive ET should amount to. Thus a replacement shuttle as in the form of your "bigger is better" spaceplane should have any problem whatsoever achieving those 100t deployments at 400+km, with energy to spare. Of course, if my Ra226--LRn222--ION thruster arrays become the alternative to those SSMEs that are worth a 10t investment plus fuel and the vast volumes necessary for accommodating such fuel per each fully integrated SSME and, no matters what these SSMEs should still suck LH2 and LO2 like there's no tomorrow, whereas without SSMEs but instead LRn--ION thrusters might represent payloads that can become half again or roughly 50/50 of the spaceplane package. Meaning a 150t spaceplane that's still having to be SRB assisted (possibly two-stage SRBs) past 250,000'(76 km) could thus manage to safely deploy a 150t item or that of multiple items that amount to 150t past the 400 km mark. Unfortunately the ulterior motivated likes of "George Evans" being rather mindset upon carbon fibers that are extremely frail and spendy as all get out compared to basalt fibers, whereas as far as I know of there are no such things as carbon microballoons, nor for that matter a CNT microballoon. There are however terrific insulative and combined structural capability per cm3 of basalt, along with those existing graphite epoxy as binders is still the overall king of the hill that's not one cent on the dollar per carbon fibers and, perhaps not .001 cent on the CNT dollar that's still another good decade down the winding R&D road. George Evans; Here again, the extreme thermal conductivity of CNT is a drawback. Everybody mocks the TPS tiles on the shuttle but they really are amazing. If they are banded to a CNT/graphite epoxy composite structure, those fillers you are concerned about probably wouldn't be necessary. George is another all or nothing sort of guy by way of his thinking 100% CNT or bust. Whats' so hard about thinking a little outside the box, such as incorporating the CNT fibers as a fabric layer or perhaps that of a wise matrix of CNT/basalt fibers representing the outer structural composite layer that's containing the bulk of basalt microballoons? In inner most hull layer and certainly the likes of stringers, ribs, decks and bulkheads could be 100% structural basalt composite that could range anywhere from 32 kg/m3 to 2560 kg/m3. Purely insulative basalt microballoons might easily represent less than 1 kg/m3 if those little basalt suckers are full of H2 or even He. Christ almighty folks, what more can you or the likes of lord/wizard "George Evans" possibly ask for that has been doable for the past several decades? I'd actually think that a little extra thermal conductivity for what's directly below the Corelle/ceramic tiles or whatever spray-on ceramic microballoon coating would be highly desirable, as possibly performing a similar thermal rate of expansion by which this CNT/basalt outer shell could best match the rate of ceramic expansion. I do agree with "George Evans" that tile fillers need not be incorporated unless no other thermal expansion alternative becomes available. BTW; I'm not exactly sure how LH2 and slush LH2 differ in energy density by all that much. In either case, a terribly insulative containment of the likes of LH2 (slush or not) and the same goes for LO2 could each be accommodated by way of using a composite of basalt fibers and those highly insulative balloons along with the graphite epoxy binders if not in some cases just utilizing good old end-user friendly JB-WELD. A metallic internal coating via plasma spray could make for quite another weight saving improvement. In fact, there could be two or three viable containment layers of plasma applied metallic coatings at less weight impact than a conventional tank that's composite wrapped. ~ Kurt Vonnegut would have to agree; WAR is WAR, thus "in war there are no rules" - In fact, war has been the very reason of having to deal with the likes of others that haven't been playing by whatever rules, such as GW Bush. Life upon Venus, a township w/Bridge & ET/UFO Park-n-Ride Tarmac: http://guthvenus.tripod.com/gv-town.htm The Russian/China LSE-CM/ISS (Lunar Space Elevator) http://guthvenus.tripod.com/lunar-space-elevator.htm Venus ETs, plus the updated sub-topics; Brad Guth / GASA-IEIS http://guthvenus.tripod.com/gv-topics.htm |
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B1ackwater wrote:
(CNN) -- NASA Administrator Michael Griffin rolled out NASA's plan for the future Monday, including new details about the spaceship intended to replace the shuttle and a timeline for returning astronauts to the moon in 2018. OK - the question is "WHY ?". A few people for a few days at a time ... it's just not worth doing (except to enrich certain aerospace companies). The problem is both NASA and those who think like you, pretending to be on opposite sides of the relevant issue even as you agree to agree on the very thing that makes the disagreement contrived. The correct question is NOT "why should NASA waste time and money getting to the moon by 2018 just to allow a few people to plant more footprints on the moon"; it is: "why should NASA waste time and money getting to the moon by 2018, by which time it won't have any place left to land and place footprints out there, when there's already going to be 100's of operations from the private sector in and around lunar space? Why does NASA, ESA, and all the other SA's still clunk around stuck in the Industrial Era of the pre-1970's, still thinking like people in the previous millenium, instead of just getting the HELL out of the way, stepping aside, and make room for the rest of the world (i.e. private sector) to run circles around it at 1/1000 the cost, and infinity times the gain?" |
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