tag:blogger.com,1999:blog-6633940777526327846.post1609977159971587011..comments2024-03-17T01:31:31.268-07:00Comments on No Shortage of Dreams: Could the Space Voyages in the Film and Novel "2001: A Space Odyssey" Really Happen? (Part 2) Unknownnoreply@blogger.comBlogger19125tag:blogger.com,1999:blog-6633940777526327846.post-80894188592614725032018-04-04T08:13:22.238-07:002018-04-04T08:13:22.238-07:00prof premraj pushpakaran writes -- 2018 marks the ...prof premraj pushpakaran writes -- 2018 marks the 50th year of Stanley Kubrick's 2001: A Space Odyssey!!! prof prem raj pushpakaranhttps://www.blogger.com/profile/14561237920972677898noreply@blogger.comtag:blogger.com,1999:blog-6633940777526327846.post-69773890095677820242016-07-30T07:38:47.833-07:002016-07-30T07:38:47.833-07:00I've suggested something along these lines in ...I've suggested something along these lines in the past, though not as the next step after ISS. I like to imagine a variable-gravity station in Earth orbit for that. Then I'd take the variable-G station design and send it out of Earth orbit as a revolving cycler - a space station orbiting the Sun. I imagine using solar-electric propulsion during these space program phases. I do not claim David S. F. Portreehttps://www.blogger.com/profile/15818906581595028816noreply@blogger.comtag:blogger.com,1999:blog-6633940777526327846.post-47679274654029505412016-07-27T09:26:49.070-07:002016-07-27T09:26:49.070-07:00I'm dragging on comments way longer than I sho...I'm dragging on comments way longer than I should, but if I had to contract building nuclear space cycler similar to Buzz Alrin's Mars cycler, what nuclear propulsion would be the most feasible and attainable (mass of liftoff, size to build, etc) for a deployment in 10 years?<br /><br />Would this not be the next step from the ISS - long term habitability beyond Earth orbit, targetable Anonymoushttps://www.blogger.com/profile/17639020344662007725noreply@blogger.comtag:blogger.com,1999:blog-6633940777526327846.post-52630581585066351062016-07-24T19:13:35.744-07:002016-07-24T19:13:35.744-07:00I forgot about the Orion-Drive from the Lost World...I forgot about the Orion-Drive from the Lost Worlds of 2001. Oh well, it never made it into the Canon of the Movies and Books. Much changed during development:<br /><br />The sentient robot Athena became the sapient supercomputer HAL 9000.<br /><br />In the late 1950s, and early 1960s, so many wanted the high impulse, high thrust of nuclear propulsion. We soon had too abandon the nuclear Walabiohttp://intactwiki.orgnoreply@blogger.comtag:blogger.com,1999:blog-6633940777526327846.post-47904707433687420362016-07-24T13:59:08.640-07:002016-07-24T13:59:08.640-07:00My replies to your comment, Walabio, of which ther...My replies to your comment, Walabio, of which there are now three, are out of order. Sorry about that. <br /><br />Occurs to me that one could say there's yet another DISCOVERY - as I suspect you know, Kubrick for a while wanted a Project Orion-type "bang-bang" propulsion system. His model-building department rebelled and Clarke wasn't too enamored of the change, either. Yet theDavid S. F. Portreehttps://www.blogger.com/profile/15818906581595028816noreply@blogger.comtag:blogger.com,1999:blog-6633940777526327846.post-68757537731332378342016-07-23T22:10:04.090-07:002016-07-23T22:10:04.090-07:00Forgot to mention - I often post and then tweak. T...Forgot to mention - I often post and then tweak. This time around is kind of extreme - major changes in structure, new info, new pictures. . . But that's OK, I think, if it yields a better post.<br /><br />dsfpDavid S. F. Portreehttps://www.blogger.com/profile/15818906581595028816noreply@blogger.comtag:blogger.com,1999:blog-6633940777526327846.post-9665016580999496032016-07-23T22:07:39.399-07:002016-07-23T22:07:39.399-07:00Oh, drat - I plan to discuss this in my third post...Oh, drat - I plan to discuss this in my third post, along with things like the "carousel" designs. My current plan is to report what happened to DISCOVERY after Bowman left her instead of reporting what happened to Bowman. Stargate technology is not something I feel equipped to tackle. :-) I contend that it's accurate to state that there are two DISCOVERYs in 2001 - 2010 is not 2001David S. F. Portreehttps://www.blogger.com/profile/15818906581595028816noreply@blogger.comtag:blogger.com,1999:blog-6633940777526327846.post-47442149869987915742016-07-23T19:16:52.823-07:002016-07-23T19:16:52.823-07:00I love the way you keep updating the article. You...I love the way you keep updating the article. You mentioned 2 Discoveries. We have a 3rd:<br /><br />In the Book 2010, Overvoltages induced my spaceweather caused emergency-shut-downs of the nuclear reactors after Doctor David Bowman left the Discovery. Discovery ran on batteries for months until they were depleted. Normally, either the HAL 9000 or the crew would reactivate the nuclear Walabiohttp://intactwiki.orgnoreply@blogger.comtag:blogger.com,1999:blog-6633940777526327846.post-64993268593723070632016-07-22T15:32:05.028-07:002016-07-22T15:32:05.028-07:00I would like to see you work with Stan Borowski to...I would like to see you work with Stan Borowski to see what Discover would look like if it had used Nuclear Thermal engines. Not as good as gas core--I know--but we do have SLS.<br />http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20140009579.pdf<br /><br />The idea of an oxygen afterburner interests me.<br /><br />I'm thinking the number of SLS payload segments for Discovery using NTR Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6633940777526327846.post-81732187656331486312016-07-21T13:30:47.321-07:002016-07-21T13:30:47.321-07:00I mean, there should be a shorter gap between part...I mean, there should be a shorter gap between part two and part three. Oops!<br /><br />dsfpDavid S. F. Portreehttps://www.blogger.com/profile/15818906581595028816noreply@blogger.comtag:blogger.com,1999:blog-6633940777526327846.post-62731048087577950382016-07-21T05:43:14.383-07:002016-07-21T05:43:14.383-07:00sorry, replace 10,0000 megawatts with 100,000 mega...sorry, replace 10,0000 megawatts with 100,000 megawatts. That is 100 gigawatts or 0.1 terawatts. Nyrathhttps://www.blogger.com/profile/11528898889244833751noreply@blogger.comtag:blogger.com,1999:blog-6633940777526327846.post-47015055201638380862016-07-21T05:41:39.644-07:002016-07-21T05:41:39.644-07:00You have to understand that while the VASIMR has a...You have to understand that while the VASIMR has an Isp of 3,000 to 30,000 sec (depending upon the setting) but with a pathetic thrust of 400 to 40 newtons. You can see this because its thrust power is only about 6 megawatts.<br /><br />The open-cycle gas core nuclear thermal rocket has an Isp of around 4,000 sec but with a thrust of about 5,000,000 newtons. This is because it is using a barely Nyrathhttps://www.blogger.com/profile/11528898889244833751noreply@blogger.comtag:blogger.com,1999:blog-6633940777526327846.post-86187893538123921292016-07-20T16:47:56.197-07:002016-07-20T16:47:56.197-07:00You're welcome. Exotic propulsion is not a str...You're welcome. Exotic propulsion is not a strong area for me, so I've had to do a lot of research. I think this is because I've focused on technologies that have gotten further along before they got the ax - space stations, for example (in that case we actually built some, though none as functional as once proposed).<br /><br />dsfpDavid S. F. Portreehttps://www.blogger.com/profile/15818906581595028816noreply@blogger.comtag:blogger.com,1999:blog-6633940777526327846.post-83489771221912876922016-07-20T16:45:36.009-07:002016-07-20T16:45:36.009-07:00I'm working on it now. It will be more similar...I'm working on it now. It will be more similar to part one - that it, it will summarize the film and book 2001 where part one left off.<br /><br />No ETA yet, but no vacation planned, so should be a shorter gap between part one and part two.<br /><br />dsfpDavid S. F. Portreehttps://www.blogger.com/profile/15818906581595028816noreply@blogger.comtag:blogger.com,1999:blog-6633940777526327846.post-91433690196020013502016-07-20T16:43:33.539-07:002016-07-20T16:43:33.539-07:00Fixed. VASIMR would require some really hefty nucl...Fixed. VASIMR would require some really hefty nuclear reactors and cooling systems, so has its share of technical issues, just like any advanced propulsion system. A big problem is, how do you test it at full scale? In any case, this post is not intended to advocate gas-core nuclear propulsion. This is a history blog, and this particular post looks at a film in the context of NASA research David S. F. Portreehttps://www.blogger.com/profile/15818906581595028816noreply@blogger.comtag:blogger.com,1999:blog-6633940777526327846.post-964258236925983042016-07-20T16:30:33.383-07:002016-07-20T16:30:33.383-07:00Thank you for catching those errors - I'll fix...Thank you for catching those errors - I'll fix them immediately.<br /><br />dsfpDavid S. F. Portreehttps://www.blogger.com/profile/15818906581595028816noreply@blogger.comtag:blogger.com,1999:blog-6633940777526327846.post-41796080512012494492016-07-20T15:45:58.055-07:002016-07-20T15:45:58.055-07:00There is an error for the unit conversion from Kel...There is an error for the unit conversion from Kelvin to Celsius: 22,000 K is 21,700° C and not only 12,200° C. Kelvin and Celsius values are nearly at the same at that level. And further more that's four times of the solar surface, not just twice.<br /><br />Nevertheless a great article about studies I haven't heard about before. But that sounds to me more like Science Fiction. An Isp ofdgbrthttps://www.blogger.com/profile/08444761728758364208noreply@blogger.comtag:blogger.com,1999:blog-6633940777526327846.post-60418642026041824422016-07-20T05:42:43.376-07:002016-07-20T05:42:43.376-07:00I think about during the same time period what was...I think about during the same time period what was spent on munitions while these research budgets were being cut and shake my head. Amazing technology potential to be developed here. But ironic as the theme in much of science fiction is that our ability to invent technology outpaces our wisdom in how to constructively use it.<br /><br />Thank you David for your well detailed research and time toAnonymoushttps://www.blogger.com/profile/17639020344662007725noreply@blogger.comtag:blogger.com,1999:blog-6633940777526327846.post-62495355136770999692016-07-19T18:18:08.412-07:002016-07-19T18:18:08.412-07:00Fabulous! You've provided a great treatise on...Fabulous! You've provided a great treatise on the nuclear engine. Looking forward to Part III!Zondhttps://www.blogger.com/profile/04755546664770032313noreply@blogger.com