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Open the link, first thing I see is an ad window atop the main window, offering "the Starship Enterprise Pizza Cutter" - which is as silly as you'd think. Don't you just love commercials?
Given present levels of funding, the persistence of uncertain economic conditions and the general level of World instability, I would say that 100 years is being extremely optimistic.
Reminds me of a student AIAA branch I was in. We were trying to pick a project to work on as a group. Our university had an air-breather test cell and a rig for testing ramjets. I and several of the older students wanted to work on a ramjet that would operate in the low end of the hypersonic velocity range. We were also looking at the possibility of getting in with another university on a "Get-Away Special" on the Shuttle (which had flown twice at that point.)
A small but vocal and vociferous group of Star Trek fools (who made me embarrassed to ever having enjoyed the show) kept calling those ideas "trivial" and wanted to do something "really important" like build a warp drive. When I asked them exactly what they were going to be doing in the shop, they seemed to have the idea that if we started cutting metal somehow we'd walk into some sort of device that would bend space and time. To them, somehow it was just a matter of wanting to bad enough. They couldn't provide physics or design rules, but they were not going to let us work on something else.
It was totally crazy, as in insane crazy.
I resigned my position and went to the SAE group, where a much more mature group of students were working on real, interesting projects. The only time someone mentioned a warp drive was when they were trying to wind me up.
So what is our most practical and achievable option? To a non engineer type I would think an asteroid type ship the best, with our polymers and compounds today I'm sure we could seal one up and maintain pressure? And why don't rockets work? Isn't excelleration multiplied constantly?
So what is our most practical and achievable option? To a non engineer type I would think an asteroid type ship the best, with our polymers and compounds today I'm sure we could seal one up and maintain pressure? And why don't rockets work? Isn't excelleration multiplied constantly?
In part because, in the real world, most asteroids small enough to be accelerated effectively and yet large enough to be a useful generation ship appear to be effectively piles of rubble.