 | | Where's all that gravity coming from? —William R. Ward
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| | | I don't believe that gravity generators will ever be a viable technology. Even if it were possible to create such a thing, they would likely cause a lot of undesirable effects. So I try to design my MOC's (at least my more recent ones) to be viable (...) (23 years ago, 5-Mar-01, to lugnet.space)
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| | | | | Re: Where's all that gravity coming from? —Mark Sandlin
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| | | | | William R. Ward at hermit@bayview.com wrote: <snip realistic stuff> (...) Wow, that's very realistic-sounding. Good luck with that. I think I'll stay in my comfy gravity-generator fantasy environment. :^) ~Grand Admiral Muffin Head (23 years ago, 6-Mar-01, to lugnet.space)
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| | | | | | | Re: Where's all that gravity coming from? —Aaron West
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| | | | | | (...) As far as my Fleet is concerned, they wear standard issue magnetic boots (Okay, studnetic?) to walk the ship :oD I like some of the ideas being explored here very much, but my favorite has to be the use of a controlled black hole or super (...) (23 years ago, 6-Mar-01, to lugnet.space)
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| | | | | | | | Re: Where's all that gravity coming from? —William R. Ward
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| | | | | | (...) I usually assume Velcro, which is what real astronauts today use. (...) Trouble is, gravity radiates out in all directions from a single point (the center of mass). Unless your ship is spherical, it doesn't make much sense - at the extreme (...) (23 years ago, 9-Mar-01, to lugnet.space)
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| | | | | Re: Where's all that gravity coming from? —Tony Hafner
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| | | | | (...) You don't need a ring- you can have an arm of arbitrary length with a compartment at the end. And you can have as many compartments as you want, as long as the center of gravity is at the axis. I believe that there was a ship with this sort of (...) (23 years ago, 6-Mar-01, to lugnet.space)
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| | | | | | | Re: Where's all that gravity coming from? —Trevor Pruden
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| | | | | | | (...) Yep, I agree on the 2010 reference. The Soviet ship had and arm that rotated, unlide the enclosed circular drum of the American craft. Most of my ships rely on anti gravity since it's a Star Trek accepted technology. And it's easier to build (...) (23 years ago, 6-Mar-01, to lugnet.space)
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| | | | | | | | | Re: Where's all that gravity coming from? —Mladen Pejic
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| | | | | | | | Check out Jeff Elliott's superb Extra Stout Heavy Space Tug to see an example of the arm-with-compartment idea: (URL) is by far the most realistic space MOC I have ever seen. (...) (23 years ago, 6-Mar-01, to lugnet.space)
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| | | | | | | | | | Re: Where's all that gravity coming from? —Trevor Pruden
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| | | | | | | | | (...) Somebody PLEASE tell me where he got that huge gear with the toothed hole in it! That was stout, alright! That was exactly what I would like to to do, but I don't have the critical pieces for that at the moment... Hmmm... ideas ideas ~Trev (...) (23 years ago, 6-Mar-01, to lugnet.space)
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| | | | | | | | | | | Re: Where's all that gravity coming from? —George Haberberger
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| | | | | | | | | | (...) Thosse were my thoughts exactly when I first saw Jeff's Extra Stout. Jeff was kind enough to inform me that the got that gear from Lego Dacta, ala (URL) , the Large Turntable. George (23 years ago, 6-Mar-01, to lugnet.space)
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| | | | | | | | | | Re: Where's all that gravity coming from? —Jeff Elliott
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| | | | | | | | (...) Heh, thanks Mladen... you beat me to the punch. But I was going to address another point in the original posting: About big spherical fuel tanks: If you study space flight and chemical propulsion systems, you'll find that using any technology (...) (23 years ago, 8-Mar-01, to lugnet.space)
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| | | | | | | Re: Where's all that gravity coming from? —William R. Ward
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| | | | | | | (...) It seems to me that this approach might be a little unstable. The overall center of mass would stay in one place of course, but with respect to certain axes it would be problematic, especially when maneuvering. I'm thinking however that one (...) (23 years ago, 6-Mar-01, to lugnet.space)
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| | | | | | | | | Re: Where's all that gravity coming from? —John D. Forinash
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| | | | | | | | (...) Given that a rotating disc/ring/sphere would also tend to create a gyroscope effect, I don't think this is that much of an issue. Besides, maneuvering means even _more_ fuel you have to haul around. Get pointed in the right direction, spin up (...) (23 years ago, 6-Mar-01, to lugnet.space)
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| | | | | | | | | | Re: Where's all that gravity coming from? —William R. Ward
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| | | | | | | | (...) I was referring not to a rotating disc/ring but to a pair of pods connected by a shaft, rotating about the center of that shaft. The gyroscope effect would be generated to some degree but it would be a lopsided one. My understanding about (...) (23 years ago, 9-Mar-01, to lugnet.space)
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| | | | | | | | | | Re: Where's all that gravity coming from? —John D. Forinash
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| | | | | | | | (...) I was actually thinking bricks when I wrote this, but there are 1x2 plates with click-hinges sticking out the top of 'em, on one half. Not sure which sets have 'em; I think I got some from one of the Life on Mars mechs. -JDF (23 years ago, 10-Mar-01, to lugnet.space)
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| | | | | | | Re: Where's all that gravity coming from? —John D. Forinash
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| | | | | | (...) Leonov was the ship in 2010 with that design. Omega class destroyers in Babylon 5 use it, as well. -JDF (23 years ago, 6-Mar-01, to lugnet.space)
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| | | | | Re: Where's all that gravity coming from? —Paul Baulch
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| | | | | "William R. Ward" <hermit@bayview.com> wrote in message news:m2r90bye2i.fsf@...iew.com... (...) Sounds almost exactly like what my grandfather said about space travel... ;-) -- Cheers, Paul LUGNET member 164 (URL) (23 years ago, 6-Mar-01, to lugnet.space)
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| | | | | Re: Where's all that gravity coming from? —Sean Forbes
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| | | | | (...) It's been a while scince I've read it, but a book called "The Compleat McAndrew", by Charles Sheffield (I found it at BN.com just now) offers two other ideas. It's a collection of short stories that are pretty Hard Science Sci-fi. Using future (...) (23 years ago, 6-Mar-01, to lugnet.space)
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| | | | | Re: Where's all that gravity coming from? —Daniel Jassim
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| | | | | (...) Yeah, that may be so. I can imagine artificial gravity being created by an electromagnetic field but it that takes lot's of energy and creates radiation. (...) Yes, or else space fellars will get muscle atrophy. <snipped lots of good tech (...) (23 years ago, 6-Mar-01, to lugnet.space)
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| | | | | | | Re: Where's all that gravity coming from? —Peter Guenther
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| | | | | | | (...) Won't be a problem when we discover the subatomic particle that's the basis of gravity--like an electron but for gravity! Then you'll just need a wee atom smasher on your ship to liberate some extra ones =) Peter (23 years ago, 6-Mar-01, to lugnet.space)
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| | | | | | | Re: Where's all that gravity coming from? —Patrick Justison
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| | | | | | (...) Check out my post just before this thread got started. I use both ideas (but no octagons). (URL) J (23 years ago, 6-Mar-01, to lugnet.space)
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| | | | | | | | Re: Where's all that gravity coming from? —William R. Ward
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| | | | | | (...) station he designed; a raytrace image can be seen at this URL: (URL) that space station supposed to spin around, creating artificial gravity? I had always assumed that its "down" was the pointy part at the bottom of the image. (23 years ago, 9-Mar-01, to lugnet.space)
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| | | | | Re: Where's all that gravity coming from? —John D. Forinash
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| | | | | (...) Minifigs don't need gravity. Their feet stick to the studs on the surfaces of things. -JDF (23 years ago, 6-Mar-01, to lugnet.space)
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| | | | | | | Re: Where's all that gravity coming from? —Daniel Jassim
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| | | | | | (...) Uhhh...Can't argue with that, buddy! ~Dan (23 years ago, 6-Mar-01, to lugnet.space)
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| | | | | Re: Where's all that gravity coming from? —Doug Dropeskey
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| | | | As some people have already pointed out, you can rotate just about any structure for artificial gravity--a drum, a torus, a rectangular box, or a box at the end of a boom (with suitable counterweight). The problem with this methodology is the amount (...) (23 years ago, 7-Mar-01, to lugnet.space)
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| | | | | | Re: Where's all that gravity coming from? —John D. Forinash
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| | | | | (...) Redundancy sounds heavy-- but you don't need it. I don't think there's any reason why the axis of rotation has to be the same as the direction of thrust of the ship's engines. So you simply build the rotating assembly, in this case (...) (23 years ago, 7-Mar-01, to lugnet.space)
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| | | | | | | Re: Where's all that gravity coming from? —Doug Dropeskey
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| | | | | | J.D. Forinash <foxtrot@cc.gatech.edu> wrote in message news:986560$3pl$1@y2...net.foo... (...) for (...) the (...) I considered and discarded that methodology, but upon reflection, I cannot think of a good reason why. It could work. The probability (...) (23 years ago, 8-Mar-01, to lugnet.space)
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| | | | | | | | Re: Where's all that gravity coming from? —John D. Forinash
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| | | | | | | (...) It does have the annoyance that spinning up/spinning down affects both parts of the ship, so you have to use small thrusters to get pointing in the right direction before you can fire the main engine. This, interestingly enough, has a neat (...) (23 years ago, 8-Mar-01, to lugnet.space)
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| | | | | | | | | Re: Where's all that gravity coming from? —Steve Bliss
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| | | | | | | | | (...) Would it be possible to make a Bussard scoop out of some kind of projected magnetic field? Two basic questions here: 1. do hydrogen atoms react to magnetic fields and 2. could such a field be constructed/projected? Unfortunately, I don't have (...) (23 years ago, 8-Mar-01, to lugnet.space)
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| | | | | | | | | | | Re: Where's all that gravity coming from? —Doug Dropeskey
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| | | | | | | | | | Steve Bliss <steve.bliss@home.com> wrote in message news:tftfat0suhi02f1...4ax.com... (...) hydrogen (...) Any ionozed atom reacts to a magnetic field (since it has charge). I always assumed a Bussard ramjet requires a *big* electromagnetic scoop, (...) (23 years ago, 9-Mar-01, to lugnet.space)
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| | | | | | | | | Re: Where's all that gravity coming from? —Doug Dropeskey
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| | | | | | | | J.D. Forinash <foxtrot@cc.gatech.edu> wrote in message news:9889lg$s7$1@ana...net.foo... (...) cannot (...) parts (...) right (...) rotational (...) probably (...) in (...) implies (...) minifigs (...) How about this: build a large drum (or box) (...) (23 years ago, 9-Mar-01, to lugnet.space)
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| | | | | | | | | | Re: Where's all that gravity coming from? —John D. Forinash
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| | | | | | | | | (...) Ooooh, tethers. I like that idea. Though I dunno how to build it in Lego. :) In fact, one could do something like this where both sides are habitation modules, and have an "elevator" that climbs and descends the tethers should minifigs need to (...) (23 years ago, 9-Mar-01, to lugnet.space)
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| | | | | | | | | | Re: Where's all that gravity coming from? —Jeff Elliott
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| | | | | | | | (...) <snip> (...) <snip> You just described my "Extra Stout" space tug - an entry into Mark Sandlin's space contest of this past summer: (URL) only difference is that I didn't rotate the entire ship, just the pods and arms. There's a rotator cuff (...) (23 years ago, 12-Mar-01, to lugnet.space)
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| | | | | | | | Re: Where's all that gravity coming from? —Steve Bliss
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| | | | | | (...) It's that higher-technology, doing more work with less mass. Steve (23 years ago, 8-Mar-01, to lugnet.space)
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| | | | | | Re: Where's all that gravity coming from? —Kyle Keppler
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| | | | | Uh, I'll stick to giant robots, planet destroying guns, and artifical gravity generators! :-P (Allthrough you did make some interesting comments) --Kyle (URL) (23 years ago, 7-Mar-01, to lugnet.space)
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| | | | | | Re: Where's all that gravity coming from? —Paul Hartzog
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| | | | | (...) ah, well, having done the astrophysics route in school, if i were going to build a "hard sci-fi" ship, it would use a rotating magnet to tap flux (massless charge) from spacetime, create an inertial field, drop my connection to standard (...) (23 years ago, 8-Mar-01, to lugnet.space)
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| | | | | | Re: Where's all that gravity coming from? —Steve Bliss
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| | | | | In lugnet.space, Damraska wrote: [snip] (...) [snip] Here's another problem: with the conventional approach of acceleration via some propulsion, artificial gravity is not your problem. The real problem is shedding the excessive G's. My numbers could (...) (23 years ago, 8-Mar-01, to lugnet.space)
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| | | | | | | Re: Where's all that gravity coming from? —Wayne McCaul
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| | | | | | | I'm going to chime in, and hopefully not get smacked down to hard. I read a book a whole bunch of years ago called The Forever War. I believe that the military was placing troopers in special suits and putting them all in basically giant vats of (...) (23 years ago, 8-Mar-01, to lugnet.space)
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| | | | | | | Re: Where's all that gravity coming from? —Erik Olson
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| | | | | | (...) My figures (hasn't this been done in off-topic already?) note: 3e8 is 3 * 10^8 or 300,000,000 Proxima Centauri - about 9 ly away 1 year = 31557600 seconds, or 3e7 s c = 3e8 m/s (speed of light) 1 ly = 3e7 s * c d = Proxima Centauri = about (...) (23 years ago, 8-Mar-01, to lugnet.space)
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| | | | | | | | Re: Where's all that gravity coming from? —Steve Bliss
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| | | | | | (...) We talked about a similar trip to Mars awhile ago (it was 40 hours, I think). (...) Actually, Proxima is 4.22. But we'd be more interested in Alpha Centauri A and B, which are 4.35 ly distant. (...) d(A&B) = 4.35 ly = 4e16 m (...) sqrt(4e16 / (...) (23 years ago, 9-Mar-01, to lugnet.space)
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| | | | | | Re: Where's all that gravity coming from? —William R. Ward
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| | | | | (...) Who said anything about interstellar? I've been thinking only in terms of tooling around the Solar System... I don't think Lego is up to the task of a hard SF interstellar ship, but an interplanetary ship is a realistic goal. --Bill. (23 years ago, 9-Mar-01, to lugnet.space)
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| | | | | | Re: Where's all that gravity coming from? —Kyle D. Jackson
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| | | | (...) As an example, if your structure is spinning at 2 rpm, you have to go out to 225 mm from the spin axis to get 1 g. And you have to be standing with your head towards the spin axis (like a hamster in a wheel). I got thinking about what this (...) (23 years ago, 10-Mar-01, to lugnet.space)
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| | | | | | Re: Where's all that gravity coming from? —John D. Forinash
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| | | | (...) Better would be to spin the docking ship-- spinning the coke can the other direction means changing the rotational speed of the whole station. It'd me much cheaper to spin the docking ship, then you don't have to do anything weird at all on (...) (23 years ago, 10-Mar-01, to lugnet.space)
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