 | | 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 (...) (24 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 (...) (24 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$1@y2...net.foo... (...) for (...) the (...) I considered and discarded that methodology, but upon reflection, I cannot think of a good reason why. It could work. The probability (...) (24 years ago, 8-Mar-01, to lugnet.space)
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| | | | | | | | Re: Where's all that gravity coming from? —John D. Forinash
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| | | | | | | (...) It does have the annoyance that spinning up/spinning down affects both parts of the ship, so you have to use small thrusters to get pointing in the right direction before you can fire the main engine. This, interestingly enough, has a neat (...) (24 years ago, 8-Mar-01, to lugnet.space)
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| | | | | | | | | Re: Where's all that gravity coming from? —Steve Bliss
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| | | | | | | | | (...) Would it be possible to make a Bussard scoop out of some kind of projected magnetic field? Two basic questions here: 1. do hydrogen atoms react to magnetic fields and 2. could such a field be constructed/projected? Unfortunately, I don't have (...) (24 years ago, 8-Mar-01, to lugnet.space)
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| | | | | | | | | | | Re: Where's all that gravity coming from? —Doug Dropeskey
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| | | | | | | | | | Steve Bliss <steve.bliss@home.com> wrote in message news:tftfat0suhi02f1...4ax.com... (...) hydrogen (...) Any ionozed atom reacts to a magnetic field (since it has charge). I always assumed a Bussard ramjet requires a *big* electromagnetic scoop, (...) (24 years ago, 9-Mar-01, to lugnet.space)
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| | | | | | | | | Re: Where's all that gravity coming from? —Doug Dropeskey
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| | | | | | | | J.D. Forinash <foxtrot@cc.gatech.edu> wrote in message news:9889lg$s7$1@ana...net.foo... (...) cannot (...) parts (...) right (...) rotational (...) probably (...) in (...) implies (...) minifigs (...) How about this: build a large drum (or box) (...) (24 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 (...) (24 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 (...) (24 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 (24 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) (24 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 (...) (24 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 (...) (24 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 (...) (24 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 (...) (24 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 / (...) (24 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. (24 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 (...) (24 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 (...) (24 years ago, 10-Mar-01, to lugnet.space)
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