Subject:
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Re: Wings [was: Re: Building big]
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Newsgroups:
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lugnet.space, lugnet.loc.au
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Date:
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Thu, 21 Jun 2001 21:01:41 GMT
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Viewed:
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7192 times
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In lugnet.space, William R. Ward writes:
> "Jesse Alan Long" <joyous4god2@yahoo.com> writes:
> > In lugnet.space, William R. Ward writes:
> > > That may be true, but I don't think anyone knows for sure, because we
> > > haven't tried going that fast yet. My spacecraft follow a very "hard
> > > SF" policy - no FTL travel, no artificial gravity, etc. But that's
> > > not to say that it's the only way...
> >
> > There has existed artificial gravity for years in the space programs, most
> > notably our space program, all over the world. These same companies are
> > working with contractors to develop newer types of engines such as an ion
> > propulsion system for the future replacements of the space shuttle, of which
> > some people may say that they may be in production and used in outer space
> > as early as the year 2003.
>
> The only form of "artificial gravity" that is currently possible is to
> use a centrifuge structure to simulate gravity. If you've seen the
> film "2001: A Space Odyssey" you will remember the doughnut-shaped
> room where the men worked and excercised - the rotation of that room
> caused a simulated gravitational pull outwards from the center of the
> ship using centripetal force. Another design involves pods which
> rotate around a central axis.
>
> In Star Trek, Star Wars, and other TV and movie depictions of
> spacecraft, the people are always walking around on flat surfaces,
> just as if they were on Earth. This is of course because zero-gravity
> is very difficult to simulate for the purposes of filming the show.
> So they make up a technology of "artifical gravity" which is part of
> the story, that the Enterprise or Millennium Falcon, or whatever, has
> "gravity generators" that pull people towards the "floor". However,
> this is a gross violation of the laws of physics. In a real space
> ship like the Shuttle, there is no perceptible gravity and people just
> float around. It makes things like eating, sleeping, and going to the
> bathroom somewhat complicated as you might imagine...
>
> The problem with zero-gravity is that human bodies don't handle it
> well. Our bodies evolved with the need to constantly pump blood up to
> your head, and your bones and muscles are built to constantly fight
> the pull of gravity. In a zero-G environment, these body systems
> weaken, and when you return to Earth after an extended stay, it
> requires several weeks or even months of rehabilitation before you can
> be accustomed to Earth gravity again. So on Mir and the ISS,
> astronauts and cosmonauts need to exercise frequently to minimize this
> effect. However, it doesn't seem to be possible to eliminate it with
> current technology.
>
> --Bill.
Thank you, Bill, for telling me what the name of that technology was in my
letter. There is a fatal flaw in your response, however, Bill. You seem to
think that it is impossible to conduct this type of technology yet you
already answered how people, at least with the technology that we have
developed in society, could develop such an "artificial gravity" system. I
am not sure how that the gravity generators are a violation of the laws of
physics so please explain this logic to me, Bill.
Jesse Long
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Message has 2 Replies:
 | | Re: Wings [was: Re: Building big]
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| Hi. Gravity generators per se are not in violation of the laws of physics. However, they are far in advance of any current technology that we have. In order to generate an artificial gravity field, without the use of centrifugal force, we'd have to (...) (23 years ago, 21-Jun-01, to lugnet.space, lugnet.loc.au)
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Message is in Reply To:
| | Re: Wings [was: Re: Building big]
|
| (...) The only form of "artificial gravity" that is currently possible is to use a centrifuge structure to simulate gravity. If you've seen the film "2001: A Space Odyssey" you will remember the doughnut-shaped room where the men worked and (...) (23 years ago, 21-Jun-01, to lugnet.space, lugnet.loc.au)
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