What's most constraining you at the moment? Tentatively: ISP. The rest you can pretty much choose and design for, but ISP is a little more difficult I think.
As to Moore's law: I don't think that an exponential law applies here. Moore's law isn't so well understood, but in my opinion it comes about when you have feedback of revenue folding back into the research, which increases the speed and decreases the die size, which raises your revenue, and round and round you go exponentially.
Since you aren't making money, then I don't see how an exponential law can apply, unless you are riding on the coat tails of space research, which may be following an exponential law in some way.
I do think an exponential law might be at work in space launch prices- my model is that it halves every 5 years since 1990, but that's based on a whole 3 data points; so don't ask me to defend it.
Randall Clague wrote:
On Sat, 24 Aug 2002 23:50:05 -0400, Alex Fraser <[EMAIL PROTECTED]>
wrote:This was a question as to capabilities, I'm sure I'm off a bit, but in the
ball park.
You're within 10%, that's close enough.Now let's say that what has been flown is the actual proven capability of ERPS
right now, so KISS II is the proven capability (unless KISS III has flown?) in
rocketry.
Yes, I was going to start with KISS II.So take what you consider the numbers that define the capabilities of KISS II
(or any rocket ) best and keep doubling them adding a year for each iteration.
Keep going until you have a rocket capable of putting 10 pounds in any orbit, not
even worrying about a safe recovery of the rocket body.
We're on the same page. What I'm asking you is, to which capability
number shall we apply Moore's Law? Altitude? Delta-v? Mass
fraction? Total impulse? Each will yield a different answer.
-R
--
"Sutton is the beginning of wisdom -
but only the beginning."
-- Jeff Greason
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