[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

*To*: T.L.G.vanderLinden@student.utwente.nl, kgstar@most.magec.com, stevev@efn.org, jim@bogie2.bio.purdue.edu, zkulpa@zmit1.ippt.gov.pl, hous0042@maroon.tc.umn.edu, rddesign@wolfenet.com, David@interworld.com, lparker@destin.gulfnet.com, bmansur@oc.edu*Subject*: Re: New idea Laser launcher/scoop systems*From*: KellySt@aol.com*Date*: Sat, 9 Mar 1996 00:57:49 -0500

to Timothy van der Linden > >Hi, > >A couple days back, Tim ran threw the numbers to show what acceleration a > >'fuel packet' would need to get it up to 1/3rd light speed. Assuming a 100 > >meter long launcher, the numbers came out at E14 m/s^2 I.E. 10 trillions > >G's. I was obviously upset to hear this. However that information and a > >flip comment I made about the size of a fuel packet ("it could be as big as > >a freight car if you wanted") combined. > I did some extra calculations, it seems that electrons have a centrifugal > accleration of about 1E10 m/s/s when rotating about an atom-core. If we are > going to accelerate things so fast, atoms are going to be ionized. This > means no ordinairy matter could be used. Well, I suppose we only really wanted the nucleous anyway... > >So, if you station a laser tug every 100,000 miles or so. They can take > >turns boosting a string of canisters. Given orbital mechanics. They will > >have to be continuously boosting themselves around to stay acceptably close > >to the 'Launcher' track. (No stable orbits.) Note that the exact > >possition of the tugs isn't important, but they must know exactly where > >they and the canisters are. Given this system the launcher can be as long > >as you need at the moment. If you space them out every 60,000 miles for > >100,000,000 kilometers (about a 1,000 tugs spaced from here to Mars.) The > >average G load on a canister exiting at a speed of 1/3rd C, is E5 m/s^2, or > >about 100,000 gs. Which seems reasonably possible for a solid block of > >reinforced metal and whatever. > So in short, you use a accelerator build up from several loose cannons in a > path spaced through our Solar system. Cannons? I don't follow. > Changing the distances between accelerations may decrease the mean > acceleration but not the instant acceleration. I think it is the latter that > we need to be concerned about. No, the canisters would be undergoing contiuous boost for the entire launch track. (Well, their might be a secound or two gap when one laser tug hand off to the next.) > Your idea sounds good, but can the lasers correct the > direction of the 100 ton packets? Sure. They can stear durring boost, and a bit of reaction mass added to the sides can be used for course fine tuning with some lateral thrust. Kelly

- Prev by Date:
**Re: <Two bits worth** - Next by Date:
**Re: Re: Summary A** - Prev by thread:
**Re: RE: New idea Laser launcher/scoop systems** - Next by thread:
**Re: New idea Laser launcher/scoop systems** - Index(es):