Re: Zero-G Health Impacts
Greetings All How about sending the people to space who belong there: the paraplegics. Legs are a detriment in weightlessness. And people who are confined to wheelchairs here would be free and equal for the first time in their lives (or since they'd been confined to a wheelchair). I am familiar with the SF story Jamie mentioned about the genetically designed workers with hands instead of feet, and it does make a valid point, you really don't need legs in weightlessness. I say that ultimately space station crews should be opened to people with no legs. They deserve it and they won't have the problems the rest of us experience. Pam === | Pam Eastlick | Email: [EMAIL PROTECTED] | | Planetarium Coordinator | Voice: (671) 735-2783 | | CCEOP | Fax : (671) 734-1233 or -4582 | | UOG Station | Location : 13.25N, 144.47E | | Mangilao, Guam USA 96923 | Time : GMT+10EST+15 | | | | The Planetarium Web page is | | www.guam.net/planet| | | |LOOK UP TONIGHT, THE UNIVERSE AWAITS YOU!| === == You are subscribed to the Europa Icepick mailing list: [EMAIL PROTECTED] Project information and list (un)subscribe info: http://klx.com/europa/
Re: Zero-G Health Impacts
In a message dated 3/13/2001 4:34:44 PM Alaskan Standard Time, [EMAIL PROTECTED] writes: > How about sending the people to space who belong there: the paraplegics. > Legs are a detriment in weightlessness. And people who are confined to > wheelchairs here would be free and equal for the first time in their lives > (or since they'd been confined to a wheelchair). I am familiar with the > SF story Jamie mentioned about the genetically designed workers with hands > instead of feet, and it does make a valid point, you really don't need > legs in weightlessness. > > I say that ultimately space station crews should be opened to people with > no legs. They deserve it and they won't have the problems the rest of us > experience. > > Pam You know, Pam, I also thought of something like that, right after I sent one of the emails on bone loss. It would be a direct solution, wouldn't it? Practically speaking, to my understanding, paraplegics might be good candidates for more than just the lack of bothersome legs. They have developed strong upper bodies, and immense willpower and patience, by necessity. Such characteristics would be extremely useful in space. For that matter, I was thinking that perhaps we've been approaching the idea of astronauts all wrong. Consider: very intelligent people often have a problem focusing, on sticking to a program, because they get bored very easily. Perhaps the best thing is not to send very bright people on very long space journeys, but to send rather dull people, who won't get bored, frustrated, or go insane being locked in a tin can for months at a time. Can't you just see it? 'Paraplegics, with subnormal intelligence wanted, for deep space journey'. On a sidenote: we all discussed the potential of the 'ideal space worker' some months ago on Europa. I think we all wound up discussing a bright chimpanzee, who could simply follow remote instructions. -- JHB == You are subscribed to the Europa Icepick mailing list: [EMAIL PROTECTED] Project information and list (un)subscribe info: http://klx.com/europa/
Re: Zero-G Health Impacts
Just a nudge: The disabled community does not like the term "confined to a wheelchair," and for very good reasons. This focuses on what most of us who have the full use of all of our limbs consider a DISability, i.e., a lack of ability, and not on the ABILITY of those who require mechanical assistance. Actually, and I'm not being facietious here, I have been in situations where I wish "I" had a wheeled chair! Watch the skies! G. B. Leatherwood - Original Message - From: <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, March 14, 2001 9:39 AM Subject: Re: Zero-G Health Impacts > > In a message dated 3/13/2001 4:34:44 PM Alaskan Standard Time, > [EMAIL PROTECTED] writes: > > > How about sending the people to space who belong there: the paraplegics. > > Legs are a detriment in weightlessness. And people who are confined to > > wheelchairs here would be free and equal for the first time in their lives > > (or since they'd been confined to a wheelchair). I am familiar with the > > SF story Jamie mentioned about the genetically designed workers with hands > > instead of feet, and it does make a valid point, you really don't need > > legs in weightlessness. > > > > I say that ultimately space station crews should be opened to people with > > no legs. They deserve it and they won't have the problems the rest of us > > experience. > > > > Pam > > You know, Pam, I also thought of something like that, right after I sent one > of the emails on bone loss. It would be a direct solution, wouldn't it? > > Practically speaking, to my understanding, paraplegics might be good > candidates for more than just the lack of bothersome legs. They have > developed strong upper bodies, and immense willpower and patience, by > necessity. Such characteristics would be extremely useful in space. > > For that matter, I was thinking that perhaps we've been approaching the idea > of astronauts all wrong. Consider: very intelligent people often have a > problem focusing, on sticking to a program, because they get bored very > easily. Perhaps the best thing is not to send very bright people on very > long space journeys, but to send rather dull people, who won't get bored, > frustrated, or go insane being locked in a tin can for months at a time. > > Can't you just see it? 'Paraplegics, with subnormal intelligence wanted, for > deep space journey'. > > On a sidenote: we all discussed the potential of the 'ideal space worker' > some months ago on Europa. I think we all wound up discussing a bright > chimpanzee, who could simply follow remote instructions. > > -- JHB > == > You are subscribed to the Europa Icepick mailing list: [EMAIL PROTECTED] > Project information and list (un)subscribe info: http://klx.com/europa/ > == You are subscribed to the Europa Icepick mailing list: [EMAIL PROTECTED] Project information and list (un)subscribe info: http://klx.com/europa/
RE: Zero-G Health Impacts
Regarding gravity or lack there of, It is a problem - so lets start planning missions with rotating parts or tethered parts rotating to create an artificial gravity. No centrifuge on ISS now, so we can't test to see what minimum gravity is necessary to prevent bone and muscle loss. Mickey -Original Message- From: Pam Eastlick [mailto:[EMAIL PROTECTED]] Sent: Tuesday, March 13, 2001 6:47 PM To: [EMAIL PROTECTED] Subject: Re: Zero-G Health Impacts Greetings All How about sending the people to space who belong there: the paraplegics. Legs are a detriment in weightlessness. And people who are confined to wheelchairs here would be free and equal for the first time in their lives (or since they'd been confined to a wheelchair). I am familiar with the SF story Jamie mentioned about the genetically designed workers with hands instead of feet, and it does make a valid point, you really don't need legs in weightlessness. I say that ultimately space station crews should be opened to people with no legs. They deserve it and they won't have the problems the rest of us experience. Pam === | Pam Eastlick | Email: [EMAIL PROTECTED] | | Planetarium Coordinator | Voice: (671) 735-2783 | | CCEOP | Fax : (671) 734-1233 or -4582 | | UOG Station | Location : 13.25N, 144.47E | | Mangilao, Guam USA 96923 | Time : GMT+10EST+15 | | | | The Planetarium Web page is | | www.guam.net/planet| | | |LOOK UP TONIGHT, THE UNIVERSE AWAITS YOU!| === == You are subscribed to the Europa Icepick mailing list: [EMAIL PROTECTED] Project information and list (un)subscribe info: http://klx.com/europa/ == You are subscribed to the Europa Icepick mailing list: [EMAIL PROTECTED] Project information and list (un)subscribe info: http://klx.com/europa/
RE: Zero-G Health Impacts
-Original Message- From: Jayme Blaschke <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] <[EMAIL PROTECTED]> Date: Wednesday, March 14, 2001 4:05 PM Subject: Re: RE: Zero-G Health Impacts > >>>>No centrifuge on ISS now, so we can't test to see what >minimum gravity is necessary to prevent bone and muscle loss. > >Wasn't one originally planned and designed for the ISS, but dropped early on because of cost? The Centrifuge Accommodation Module -- although it's being built by Japan -- may now have to be dropped because of ISS' overall cost problems. If so, the very last of the original justifications used by NASA to talk Congress into funding the Station back in 1984 -- studies of how to keep people healthy during long-duration spaceflight -- will disappear, and we will have a $40 billion orbiting white elephant with absolutely no use whatsoever (at least until some president with no sense of humor shuts it off). Actually, I'm wrong; the Station has fulfilled one function magnificently -- swindling the taxpayers out of $40 billion -- which, of course, is the only real reason NASA proposed it in the first place (as with the Shuttle). But now it's collided head-on with another grand government swindle -- Bush's tax-cut flim-flam -- so it has to go. Bruce Moomaw == You are subscribed to the Europa Icepick mailing list: [EMAIL PROTECTED] Project information and list (un)subscribe info: http://klx.com/europa/
Re: Zero-G Health Impacts
In a message dated 3/14/2001 5:19:49 PM Alaskan Standard Time, [EMAIL PROTECTED] writes: > The Centrifuge Accommodation Module -- although it's being built by Japan -- > may now have to be dropped because of ISS' overall cost problems. If so, > the very last of the original justifications used by NASA to talk Congress > into funding the Station back in 1984 -- studies of how to keep people > healthy during long-duration spaceflight -- will disappear, and we will have > a $40 billion orbiting white elephant with absolutely no use whatsoever (at > least until some president with no sense of humor shuts it off). > > Actually, I'm wrong; the Station has fulfilled one function magnificently -- > swindling the taxpayers out of $40 billion -- which, of course, is the only > real reason NASA proposed it in the first place (as with the Shuttle). But > now it's collided head-on with another grand government swindle -- Bush's > tax-cut flim-flam -- so it has to go. Bruce, you've pretty much gutted the whole ISS concept with your above statements... so, you're suggesting that it's just a contemporary version of Skylab and Mir? Once again, it seems the best thing for the long-term development of space is to get it away from NASA and the big boys. What's your take, Bruce? Anyone else? -- JHB == You are subscribed to the Europa Icepick mailing list: [EMAIL PROTECTED] Project information and list (un)subscribe info: http://klx.com/europa/
RE: Zero-G Health Impacts
Financially speaking -- any guesstimates on how much it might cost to build a centrifuge? Say, for example, that we'd be talking abot a centrifuge in a landed colony, on the moon or Mars. The gravity would not pull insiders straight downward, nor would it pull them directly out to the side, but would exert a tug in a direction somewhere in the middle -- although most of the force would pull toward the sides. How much might such an apparatus cost? -- On Wed, 14 Mar 2001 15:15:32 Schmidt Mickey Civ 50 TS/CC wrote: > >Regarding gravity or lack there of, It is a problem - so lets start planning >missions with rotating parts or tethered parts rotating to create an >artificial gravity. No centrifuge on ISS now, so we can't test to see what >minimum gravity is necessary to prevent bone and muscle loss. > >Mickey > >-Original Message- >From: Pam Eastlick [mailto:[EMAIL PROTECTED]] >Sent: Tuesday, March 13, 2001 6:47 PM >To: [EMAIL PROTECTED] >Subject: Re: Zero-G Health Impacts > > > >Greetings All > >How about sending the people to space who belong there: the paraplegics. >Legs are a detriment in weightlessness. And people who are confined to >wheelchairs here would be free and equal for the first time in their lives >(or since they'd been confined to a wheelchair). I am familiar with the >SF story Jamie mentioned about the genetically designed workers with hands >instead of feet, and it does make a valid point, you really don't need >legs in weightlessness. > >I say that ultimately space station crews should be opened to people with >no legs. They deserve it and they won't have the problems the rest of us >experience. > >Pam > > > > === > | Pam Eastlick | Email: [EMAIL PROTECTED] | > | Planetarium Coordinator | Voice: (671) 735-2783 | > | CCEOP | Fax : (671) 734-1233 or -4582 | > | UOG Station | Location : 13.25N, 144.47E | > | Mangilao, Guam USA 96923 | Time : GMT+10EST+15 | > | | > | The Planetarium Web page is | > | www.guam.net/planet| > | | > |LOOK UP TONIGHT, THE UNIVERSE AWAITS YOU!| > === > > >== >You are subscribed to the Europa Icepick mailing list: [EMAIL PROTECTED] >Project information and list (un)subscribe info: http://klx.com/europa/ >== >You are subscribed to the Europa Icepick mailing list: [EMAIL PROTECTED] >Project information and list (un)subscribe info: http://klx.com/europa/ > > Get 250 color business cards for FREE! at Lycos Mail http://mail.lycos.com/freemail/vistaprint_index.html == You are subscribed to the Europa Icepick mailing list: [EMAIL PROTECTED] Project information and list (un)subscribe info: http://klx.com/europa/
RE: Zero-G Health Impacts
-Original Message- From: Ed C Sugrue <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] <[EMAIL PROTECTED]> Date: Saturday, March 17, 2001 6:54 PM Subject: Re: RE: Zero-G Health Impacts > > I spoke to an orthopedic surgeon once about these issues, and I recall he mentioned that not only a certain amount of gravity, but also a fairly low electromagnetic field, would also be necessary to maintain human health. does anyone know exactly what he may have meant by this? He said something about Earth having a certain energy field around it that has positive, even necessary, effects. > This I really haven't heard anything about -- although it is known that mild electrical current accelerates the rate at which broken bones heal. Bruce Moomaw == You are subscribed to the Europa Icepick mailing list: [EMAIL PROTECTED] Project information and list (un)subscribe info: http://klx.com/europa/
Re: Zero-G Health Impacts
-Original Message- From: Ed C Sugrue <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] <[EMAIL PROTECTED]> Date: Saturday, March 17, 2001 6:54 PM Subject: RE: Zero-G Health Impacts > > Financially speaking -- any guesstimates on how much it might cost to build a centrifuge? Say, for example, that we'd be talking about a centrifuge in a landed colony, on the moon or Mars. The gravity would not pull insiders straight downward, nor would it pull them directly out to the side, but would exert a tug in a direction somewhere in the middle -- although most of the force would pull toward the sides. How much might such an apparatus cost? >-- Probably not all that much -- it would certainly be an elementary necessity for a lunar colony (and probably a Martian one, although the gravity there IS over twice as much as on the Moon). Yet agin, Poul Anderson talked about the need for dreary daily exercise sessions in such a gadget for lunar colonists in his "Harvest of Stars" series (and he's surely not the only SF writer to mention it). Bruce Moomaw == You are subscribed to the Europa Icepick mailing list: [EMAIL PROTECTED] Project information and list (un)subscribe info: http://klx.com/europa/
Re: Zero-G Health Impacts
-Original Message- From: Pam Eastlick <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] <[EMAIL PROTECTED]> Date: Tuesday, March 13, 2001 5:42 PM Subject: Re: Zero-G Health Impacts > >Greetings All > >How about sending the people to space who belong there: the paraplegics. >Legs are a detriment in weightlessness. And people who are confined to >wheelchairs here would be free and equal for the first time in their lives >(or since they'd been confined to a wheelchair). I am familiar with the >SF story Jamie mentioned about the genetically designed workers with hands >instead of feet, and it does make a valid point, you really don't need >legs in weightlessness. > >I say that ultimately space station crews should be opened to people with >no legs. They deserve it and they won't have the problems the rest of us >experience. > Fine with me -- in fact, Arthur C. Clarke featured such a paraplegic finding his proper niche in space way back in 1954 in his novel "Islands in the Sky". By the way, since this is Clarke's Solar System -- so much more interesting than our real one -- he lost his legs when an animal on Mercury's nightside (!) threw a rock at him and knocked out his spacesuit's lower heating coils. But the overall principle certainly seems sound. Bruce Moomaw == You are subscribed to the Europa Icepick mailing list: [EMAIL PROTECTED] Project information and list (un)subscribe info: http://klx.com/europa/
Re: Zero-G Health Impacts
In a message dated 3/17/2001 9:52:10 PM Eastern Standard Time, [EMAIL PROTECTED] writes: I spoke to an orthopedic surgeon once about these issues, and I recall he mentioned that not only a certain amount of gravity, but also a fairly low electromagnetic field, would also be necessary to maintain human health. does anyone know exactly what he may have meant by this? He said something about Earth having a certain energy field around it that has positive, even necessary, effects. At least one writer (Marshal Savage, in his book "The Millennium Project")) has suggested that astronauts on long-term, deep space missions wear a close-fitting body suit that provides constant electrical stimulus to all muscle groups in succession. I've had muscle therapy at an orthopedic office that involves attaching electrodes to the skin which case the muscles to "fire" in succession. It was a peculiar sensation, not too pleasant at first, but once the level is scaled back it becomes quite endurable, and I imagine it could be fine-tuned to where you could barely feel the electrical pulses, but they would still be constantly at work on your muscles. I've seen similar devices advertised as a way of toning muscles without heavy exercise (the lazy man's way to a six-pack gut). Such an "electrode suit" might take the place of the heavy exercise required to maintain muscle tone and bone strength in zero-G (and which a lot of astronauts and cosmonauts get tired of and neglect). It might also eliminate the need for a costly, weighty device like a centrifuge. Finally, it might also provide the "electric field" you speak of to help cell growth and bone healing. Savage's idea seemed eminently feasible to me, certainly worth a try. Has anything like it been tried on Mir or any shuttle missions? DS Michaels
RE: Zero-G Health Impacts
A human sized centrifuge may be pretty expensive especially to place it on a space station or on a low gravity object like an asteroid or the moon. The fact that the centrifuge must turn and still be connected to the ISS or some other stationary structure makes it doubly so. For what its worth the most recent issue of Scientific American has an excellent article in the "Amateur Scientist" colunm about building a kind of centrifuge for plants to experimentally test anything from 0 G to 1 G on plants. Might be some carry over other organisms. Mickey -Original Message- From: Ed C Sugrue [mailto:[EMAIL PROTECTED]] Sent: Saturday, March 17, 2001 7:54 PM To: [EMAIL PROTECTED] Subject: RE: Zero-G Health Impacts Financially speaking -- any guesstimates on how much it might cost to build a centrifuge? Say, for example, that we'd be talking abot a centrifuge in a landed colony, on the moon or Mars. The gravity would not pull insiders straight downward, nor would it pull them directly out to the side, but would exert a tug in a direction somewhere in the middle -- although most of the force would pull toward the sides. How much might such an apparatus cost? -- On Wed, 14 Mar 2001 15:15:32 Schmidt Mickey Civ 50 TS/CC wrote: > >Regarding gravity or lack there of, It is a problem - so lets start planning >missions with rotating parts or tethered parts rotating to create an >artificial gravity. No centrifuge on ISS now, so we can't test to see what >minimum gravity is necessary to prevent bone and muscle loss. > >Mickey > >-Original Message- >From: Pam Eastlick [mailto:[EMAIL PROTECTED]] >Sent: Tuesday, March 13, 2001 6:47 PM >To: [EMAIL PROTECTED] >Subject: Re: Zero-G Health Impacts > > > >Greetings All > >How about sending the people to space who belong there: the paraplegics. >Legs are a detriment in weightlessness. And people who are confined to >wheelchairs here would be free and equal for the first time in their lives >(or since they'd been confined to a wheelchair). I am familiar with the >SF story Jamie mentioned about the genetically designed workers with hands >instead of feet, and it does make a valid point, you really don't need >legs in weightlessness. > >I say that ultimately space station crews should be opened to people with >no legs. They deserve it and they won't have the problems the rest of us >experience. > >Pam > > > > === > | Pam Eastlick | Email: [EMAIL PROTECTED] | > | Planetarium Coordinator | Voice: (671) 735-2783 | > | CCEOP | Fax : (671) 734-1233 or -4582 | > | UOG Station | Location : 13.25N, 144.47E | > | Mangilao, Guam USA 96923 | Time : GMT+10EST+15 | > | | > | The Planetarium Web page is | > | www.guam.net/planet| > | | > |LOOK UP TONIGHT, THE UNIVERSE AWAITS YOU!| > === > > >== >You are subscribed to the Europa Icepick mailing list: [EMAIL PROTECTED] >Project information and list (un)subscribe info: http://klx.com/europa/ >== >You are subscribed to the Europa Icepick mailing list: [EMAIL PROTECTED] >Project information and list (un)subscribe info: http://klx.com/europa/ > > Get 250 color business cards for FREE! at Lycos Mail http://mail.lycos.com/freemail/vistaprint_index.html == You are subscribed to the Europa Icepick mailing list: [EMAIL PROTECTED] Project information and list (un)subscribe info: http://klx.com/europa/ == You are subscribed to the Europa Icepick mailing list: [EMAIL PROTECTED] Project information and list (un)subscribe info: http://klx.com/europa/
Re: Zero-G Health Impacts
I'm not certain why it must be so much more expensive; the centrifuge doesn't require the hull to spin, just mount to an internal axel. As long as you have a way to spin it up and down that doesn't modify the internal stability of the entire station, it shouldn't be that big a deal. To test the effects of artificial gravity on humans, simply build "merry-go-round" exercise equipment. You sit on your back with the head pointed towards the axel, while your feet pedal to start the rotation (after setting the right counterweights on the other side). Anybody know what rpm a 3 meter diameter merry-go-round must spin to have enough angular momentum to simulate 9.8 m/s^2? Maybe this is the tragic flaw in my cheap design? :) Get your barf bags ready! Schmidt Mickey Civ 50 TS/CC wrote: > A human sized centrifuge may be pretty expensive especially to place it on a > space station or on a low gravity object == You are subscribed to the Europa Icepick mailing list: [EMAIL PROTECTED] Project information and list (un)subscribe info: http://klx.com/europa/
RE: Zero-G Health Impacts
It will be expensive because of the "extras". For example the ISS is not designed to have a centrifuge so a new module would have to be designed. The centrifuge itself would act as a reaction wheel and cause the ISS to precess in the opposite direction so reaction engines or devices would have to be added to the ISS to prevent that from happening. or the whole unit housing the centrifuge would hve to has an axel to spin around making it all the more complicated. Also one would want the Centrifuge to be a shirtsleve environment with lighting and electrical lines maybe even computer connections inside. That will require major work with slip rings etc. Building such a device would be much more expensive than say the most recent US addition to ISS. Mickey -Original Message- From: Thomas Green [mailto:[EMAIL PROTECTED]] Sent: Tuesday, March 20, 2001 2:59 PM To: [EMAIL PROTECTED] Subject: Re: Zero-G Health Impacts I'm not certain why it must be so much more expensive; the centrifuge doesn't require the hull to spin, just mount to an internal axel. As long as you have a way to spin it up and down that doesn't modify the internal stability of the entire station, it shouldn't be that big a deal. To test the effects of artificial gravity on humans, simply build "merry-go-round" exercise equipment. You sit on your back with the head pointed towards the axel, while your feet pedal to start the rotation (after setting the right counterweights on the other side). Anybody know what rpm a 3 meter diameter merry-go-round must spin to have enough angular momentum to simulate 9.8 m/s^2? Maybe this is the tragic flaw in my cheap design? :) Get your barf bags ready! Schmidt Mickey Civ 50 TS/CC wrote: > A human sized centrifuge may be pretty expensive especially to place it on a > space station or on a low gravity object == You are subscribed to the Europa Icepick mailing list: [EMAIL PROTECTED] Project information and list (un)subscribe info: http://klx.com/europa/ == You are subscribed to the Europa Icepick mailing list: [EMAIL PROTECTED] Project information and list (un)subscribe info: http://klx.com/europa/
RE: Zero-G Health Impacts
If they had two wheels of equal, but opposite angular momentum, they would cancel each other out. --- Schmidt Mickey Civ 50 TS/CC <[EMAIL PROTECTED]> wrote: > > It will be expensive because of the "extras". For > example the ISS is not > designed to have a centrifuge so a new module would > have to be designed. The > centrifuge itself would act as a reaction wheel and > cause the ISS to precess > in the opposite direction so reaction engines or > devices would have to be > added to the ISS to prevent that from happening. or > the whole unit housing > the centrifuge would hve to has an axel to spin > around making it all the > more complicated. Also one would want the Centrifuge > to be a shirtsleve > environment with lighting and electrical lines maybe > even computer > connections inside. That will require major work > with slip rings etc. > Building such a device would be much more expensive > than say the most recent > US addition to ISS. > > Mickey > > -Original Message- > From: Thomas Green > [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, March 20, 2001 2:59 PM > To: [EMAIL PROTECTED] > Subject: Re: Zero-G Health Impacts > > > > I'm not certain why it must be so much more > expensive; the centrifuge > doesn't > require the hull to spin, just mount to an internal > axel. As long as you > have a > way to spin it up and down that doesn't modify the > internal stability of the > entire station, it shouldn't be that big a deal. > > To test the effects of artificial gravity on humans, > simply build > "merry-go-round" exercise equipment. You sit on > your back with the head > pointed > towards the axel, while your feet pedal to start the > rotation (after setting > the > right counterweights on the other side). Anybody > know what rpm a 3 meter > diameter merry-go-round must spin to have enough > angular momentum to > simulate > 9.8 m/s^2? Maybe this is the tragic flaw in my > cheap design? :) Get your > barf > bags ready! > > Schmidt Mickey Civ 50 TS/CC wrote: > > > A human sized centrifuge may be pretty expensive > especially to place it on > a > > space station or on a low gravity object > > == > You are subscribed to the Europa Icepick mailing > list: [EMAIL PROTECTED] > Project information and list (un)subscribe info: > http://klx.com/europa/ > == > You are subscribed to the Europa Icepick mailing > list: [EMAIL PROTECTED] > Project information and list (un)subscribe info: > http://klx.com/europa/ > = Sincerely James McEnanly __ Do You Yahoo!? Get email at your own domain with Yahoo! Mail. http://personal.mail.yahoo.com/ == You are subscribed to the Europa Icepick mailing list: [EMAIL PROTECTED] Project information and list (un)subscribe info: http://klx.com/europa/
RE: Zero-G Health Impacts
ISS is designed for a centrifuge. Indeed there is a centrifuge module planned to be set on top of NODE2, (NODE2 connects the Japanese module, Columbus facility (Europe) and Destiny and the "centrifuge"). Now that we have cuts on ISS, this module's fate seems very uncertain. Indeed everything seems uncertain because a 3 person crew does not make sense for such a big outpost. More people would be needed, indeed the original 7 astronaut crew. But, I think its time (like Jeff is probably going to remind us sometime soon) to get back to europa, its a while since we don't center the discussions on that special moon. -- Hibai Unzueta [EMAIL PROTECTED] - Mensaje original - De: Schmidt Mickey Civ 50 TS/CC <[EMAIL PROTECTED]> Para: <[EMAIL PROTECTED]> Enviado: Asteartea, 2001.eko martxoak 20 23h57 Asunto: RE: Zero-G Health Impacts > > It will be expensive because of the "extras". For example the ISS is not > designed to have a centrifuge so a new module would have to be designed. The > centrifuge itself would act as a reaction wheel and cause the ISS to precess > in the opposite direction so reaction engines or devices would have to be > added to the ISS to prevent that from happening. or the whole unit housing > the centrifuge would hve to has an axel to spin around making it all the > more complicated. Also one would want the Centrifuge to be a shirtsleve > environment with lighting and electrical lines maybe even computer > connections inside. That will require major work with slip rings etc. > Building such a device would be much more expensive than say the most recent > US addition to ISS. > > Mickey > > -Original Message- > From: Thomas Green [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, March 20, 2001 2:59 PM > To: [EMAIL PROTECTED] > Subject: Re: Zero-G Health Impacts > > > > I'm not certain why it must be so much more expensive; the centrifuge > doesn't > require the hull to spin, just mount to an internal axel. As long as you > have a > way to spin it up and down that doesn't modify the internal stability of the > entire station, it shouldn't be that big a deal. > > To test the effects of artificial gravity on humans, simply build > "merry-go-round" exercise equipment. You sit on your back with the head > pointed > towards the axel, while your feet pedal to start the rotation (after setting > the > right counterweights on the other side). Anybody know what rpm a 3 meter > diameter merry-go-round must spin to have enough angular momentum to > simulate > 9.8 m/s^2? Maybe this is the tragic flaw in my cheap design? :) Get your > barf > bags ready! > > Schmidt Mickey Civ 50 TS/CC wrote: > > > A human sized centrifuge may be pretty expensive especially to place it on > a > > space station or on a low gravity object > > == > You are subscribed to the Europa Icepick mailing list: [EMAIL PROTECTED] > Project information and list (un)subscribe info: http://klx.com/europa/ > == > You are subscribed to the Europa Icepick mailing list: [EMAIL PROTECTED] > Project information and list (un)subscribe info: http://klx.com/europa/ > == You are subscribed to the Europa Icepick mailing list: [EMAIL PROTECTED] Project information and list (un)subscribe info: http://klx.com/europa/
Re: RE: Zero-G Health Impacts
>>>No centrifuge on ISS now, so we can't test to see what minimum gravity is necessary to prevent bone and muscle loss. Wasn't one originally planned and designed for the ISS, but dropped early on because of cost? Jayme Lynn Blaschke ___ "The Dust" coming April 2001 in THE ANT-MEN OF TIBET, AND OTHER STORIES from Big Engine http://www.bigengine.co.uk/index.htm Blaschke Home Realm http://www.vvm.com/~caius (u are subscribed to the Europa Icepick mailing list: [EMAIL PROTECTED] Project information and list (un)subscribe info: http://klx.com/europa/
RE: RE: Zero-G Health Impacts
Yes, a large one thought about but never made the final cuts. There was supposed to be a smaller one that I think the last round of cuts axed. Mickey -Original Message- From: Jayme Blaschke [mailto:[EMAIL PROTECTED]] Sent: Wednesday, March 14, 2001 3:30 PM To: [EMAIL PROTECTED] Subject: Re: RE: Zero-G Health Impacts >>>No centrifuge on ISS now, so we can't test to see what minimum gravity is necessary to prevent bone and muscle loss. Wasn't one originally planned and designed for the ISS, but dropped early on because of cost? Jayme Lynn Blaschke ___ "The Dust" coming April 2001 in THE ANT-MEN OF TIBET, AND OTHER STORIES from Big Engine http://www.bigengine.co.uk/index.htm Blaschke Home Realm http://www.vvm.com/~caius =You are subscribed to the Europa Icepick mailing list: [EMAIL PROTECTED] Project information and list (un)subscribe info: http://klx.com/europa/ == You are subscribed to the Europa Icepick mailing list: [EMAIL PROTECTED] Project information and list (un)subscribe info: http://klx.com/europa/
Re: RE: Zero-G Health Impacts
I spoke to an orthopedic surgeon once about these issues, and I recall he mentioned that not only a certain amount of gravity, but also a fairly low electromagnetic field, would also be necessary to maintain human health. does anyone know exactly what he may have meant by this? He said something about Earth having a certain energy field around it that has positive, even necessary, effects. -- On Wed, 14 Mar 2001 16:30:18 Jayme Blaschke wrote: > No centrifuge on ISS now, so we can't test to see what >minimum gravity is necessary to prevent bone and muscle loss. > >Wasn't one originally planned and designed for the ISS, but dropped early on because >of cost? > > >Jayme Lynn Blaschke >___ >"The Dust" coming April 2001 in >THE ANT-MEN OF TIBET, AND OTHER STORIES >from Big Engine >http://www.bigengine.co.uk/index.htm > >Blaschke Home Realm >http://www.vvm.com/~caius > >^@ >You are subscribed to the Europa Icepick mailing list: [EMAIL PROTECTED] >Project information and list (un)subscribe info: http://klx.com/europa/ > > Get 250 color business cards for FREE! at Lycos Mail http://mail.lycos.com/freemail/vistaprint_index.html == You are subscribed to the Europa Icepick mailing list: [EMAIL PROTECTED] Project information and list (un)subscribe info: http://klx.com/europa/
