08-13-2011, 08:39 AM | #31 |
Join Date: Oct 2007
|
Re: TL9 Spaceships
Personally I like a beanstalk-and-motor attached to the spaceship itself, with a lander permanently attached to the end, so that you can descend down on strange worlds. Not sure how practical this is.
|
08-13-2011, 08:50 AM | #32 |
Night Watchman
Join Date: Oct 2010
Location: Cambridge, UK
|
Re: TL9 Spaceships
Not very. You need a ludicrously large ship to carry the mass of the stalk and act as a counterweight. The level of superscience involved usually comes with easier ways to do the job.
|
08-13-2011, 08:50 AM | #33 |
Join Date: Oct 2004
|
Re: TL9 Spaceships
Good thing is that (the descent) reaching the ground part will happen pretty definitely. :P
|
08-13-2011, 09:17 AM | #34 |
Join Date: Dec 2007
Location: Shropshire, uk
|
Re: TL9 Spaceships
As John said it really isn't practical at all. There might be ways to get the same effect for small landing vehicles using a variant on a laser launching system. I half remember an article a few years ago during an outbreak of enthusiasm for SPS that speculated on using the output of a power satellite directly as an alternative to a ground based laser. If you can find that you might be able to bash the idea until it fits to get the same result though.
|
08-13-2011, 11:34 AM | #35 | |
Join Date: Jul 2008
Location: Ontario, Canada
|
Re: TL9 Spaceships
Quote:
However, my physics education is very weak, so I may be right out of the ballpark here. This opinion mostly comes from playing games like High Frontier, where the sails are very powerful -- cheap/light/simple -- but need a head start to win a race vs. a costly/heavy/complex rocket once it's launched.
__________________
GM, to player: "Yes, acid can look like water." |
|
08-13-2011, 11:40 AM | #36 | |
Join Date: Oct 2007
|
Re: TL9 Spaceships
Quote:
http://web.archive.org/web/200905241..._020327-2.html |
|
08-13-2011, 02:48 PM | #37 | |
Join Date: May 2005
|
Re: TL9 Spaceships
Quote:
But if you're still interested... a real magsail would not deploy to its full radius in all environments, because it wouldn't be able to maintain a magnetosphere; it would collapse under stellar wind pressure. Instead it would deploy multiple loops of smaller radius. At larger distances it would deploy the same cable in fewer loops of larger radius. Double-checking my notes, the net acceleration will not be constant, but will decrease as 1/D rather than 1/D^2. I haven't read up as much on the M2P2 sail; maybe it can maintain constant acceleration, but it might also need more consumables as it expands. TeV |
|
08-13-2011, 08:38 PM | #38 | |
Join Date: May 2005
Location: Oz
|
Re: TL9 Spaceships
Quote:
Also, I note an implication that getting up or down this beanstalk will take a week.
__________________
Decay is inherent in all composite things. Nod head. Get treat. Last edited by Agemegos; 08-13-2011 at 08:43 PM. |
|
08-13-2011, 08:56 PM | #39 | |
Join Date: Aug 2007
|
Re: TL9 Spaceships
Quote:
You'd also have to be pretty lucky to find out that the dynamics of a new planet were within the capacity of your Earth-scale beanstalk. That is not at all guaranteed and longer distances are easily possible.
__________________
Fred Brackin |
|
08-14-2011, 03:39 AM | #40 | |
Join Date: Oct 2007
|
Re: TL9 Spaceships
Quote:
|
|
Tags |
magsail, spaceships, tl9 |
Thread Tools | |
Display Modes | |
|
|