[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: your mail = Greenhouse
to: Kevin C Houston
> On Sat, 24 Feb 1996, Timothy van der Linden wrote:
> > >It isn't that sunlight is stronger or lower in the IR bands, it's that
> > >earth-light is much much loser in the UV and visible bands.
> >
> > What do you mean by loser?
> Sorry, I meant lower. the s key and the w key are too
> close on my keyboard :)
You said that?
> > >that is not true. the _has_ been a temp rise over the last 90-100
> > >years. It is small, and it cannot be _proven_ to be caused by the
> > >greenhouse gases, but it has occured.
> >
> > Indeed, NASA is only one experiment. Ground-based weather data show a
clear
> > increase. I am interested though why both methods seem to disagree.
(CSIRO
> > writes in an article that global temperature did increase the last
century,
> > so it is not just a story from the newspapers and environmentalist)
> One theory, is that it is due to the "heat island" effect
> around urban centers. but this does not seem adequate
> in talking about records gathered in small rural towns
> (like my home town of Viroqua WI) The population of
> Viroqua is something like 3600, and the whole town
> fits within one square mile. Heat island effect
> cannot explain the temp rise is such pastoral settings.
Suppose that would depend on where they put the thermometer?
> > How convenient, whatever we do, we're gonna die anyway ;)
> No, we will just have to find another source of energy,
> it will either be fusion or space-based solar
I thought you just argued against space based solar?
> About the ship:
> I have a design outline that I would like everyones comment on:
> 1) Ship leaves Sol using Maser sail.
> 2) Ship enters TC using MARS lineac.
> 3) Exploration of TC and construction of maser array.
> 4) return module (more on this below) leaves TC using Maser sail.
> 5) Return Module enters Sol using Maser Sail.
Last I heard the numbers showed the lineac core couldn't over power the boost
from the micro wave. I.E. no brakes!
> The Lineac Core, large tanks, rotating hab sections,
> exploration equipment, etc. would all remain in TC
> system. only the return module and the maser sail
> would go back. This should reduce the return module
> mass by a factor of 25 (from 2.5 E9 to 1 E8)Kg
You'ld need the hab centrafuge for the living quarters otherwise the crews
health would decline. Also the heavy radiation shielding would need to be
carried.
Why do you assume a factor of 25 weight reduction? You never gave any weight
breakdown numbers.
> the return module would be the crews quarters during
> both acceleration phases, the mass should be about
> 1 E8 Kg (may be too large) ---
Whats your crew compliment? 100,000 tons does leave a lot of weight for
shilding.
> --- during the trip to TC, the return module would be
> tucked inside the rotating hab sections. the Rotating
> sections, then are freed from the design criteria
> of having to adapt to multiple gravity vectors, the
> rotating portions are designed to rotate only. --
Sounds like you just doubled the size of the habitation zones. One complete
set for accel and decel, another for artificial G (centrafuge) operations.
> --- This greatly increases the amount of interior
> space available to the TC explorers while in the target
> system.
I don't see how.
---< snip>---
> I will be putting this on a web page soon, so that you
> all can see what I am talking about.
> Kevin Houston
I hope I can get to it over the web. ;)
Kelly
----------------------- Headers --------------------------------
>From hous0042@maroon.tc.umn.edu Sat Feb 24 03:59:50 1996
Return-Path: hous0042@maroon.tc.umn.edu
Received: from mhub1.tc.umn.edu (mhub1.tc.umn.edu [128.101.131.51]) by
emin18.mail.aol.com (8.6.12/8.6.12) with SMTP id DAA23953 for
<KellySt@aol.com>; Sat, 24 Feb 1996 03:59:49 -0500
Received: from maroon.tc.umn.edu by mhub1.tc.umn.edu; Sat, 24 Feb 96 02:59:06
-0600
Received: by maroon.tc.umn.edu; Sat, 24 Feb 96 02:59:05 -0600
Date: Sat, 24 Feb 1996 02:59:05 -0600 (CST)
From: Kevin C Houston <hous0042@maroon.tc.umn.edu>
To: Timothy van der Linden <T.L.G.vanderLinden@student.utwente.nl>
cc: KellySt@aol.com, stevev@efn.org, jim@bogie2.bio.purdue.edu,
zkulpa@zmit1.ippt.gov.pl, rddesign@wolfenet.com,
David@InterWorld.com,
bmansur@oc.edu, lparker@destin.gulfnet.com
Subject: Re: your mail = Greenhouse
In-Reply-To: <199602232348.AA25376@student.utwente.nl>
Message-ID: <Pine.SOL.3.91.960224020437.25565A-100000@maroon.tc.umn.edu>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII