home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Space & Astronomy
/
Space and Astronomy (October 1993).iso
/
mac
/
TEXT_ZIP
/
spacedig
/
V15_0
/
V15NO014.ZIP
/
V15NO014
Wrap
Text File
|
1993-07-13
|
15KB
|
313 lines
Date: Sun, 19 Jul 92 05:00:58
From: Space Digest maintainer <digests@isu.isunet.edu>
Reply-To: Space-request@isu.isunet.edu
Subject: Space Digest V15 #014
To: Space Digest Readers
Precedence: bulk
Space Digest Sun, 19 Jul 92 Volume 15 : Issue 014
Today's Topics:
Chemical unit operations in space
ESA Future
How to find limiting magnitude? (was Re: Solar Power Satellites)
Manned/Unmanned
Space Transportation Infrastructure Costs
Welcome to the Space Digest!! Please send your messages to
"space@isu.isunet.edu". Please do **NOT** send (un)subscription
requests to that address! Instead, send a message of the form
"Subscribe Space <your name>" to one of these addresses:
listserv@uga (BITNET), RICE::BOYLE (SPAN/NSInet),
UTADNX::UTSPAN::RICE::BOYLE (THENET), or
space-REQUEST@isu.isunet.edu (Internet).
----------------------------------------------------------------------
Date: 18 Jul 92 23:22:43 GMT
From: Richard Bell <rlbell@babbage.waterloo.edu>
Subject: Chemical unit operations in space
Newsgroups: rec.arts.sf.science,sci.space
The point of building a chemical plant in space is not to make the things
that chemical plants make on Earth, but to make things that cannot be made
in the Earth's gravity field, things like perfect crystals and foamed steel.
------------------------------
Date: 19 Jul 1992 04:08:18 GMT
From: George William Herbert <gwh@soda.berkeley.edu>
Subject: ESA Future
Newsgroups: sci.space
Background:
About a year ago (very roughly; correct me on the date) the ESA
council of ministers rejected the ambitious ESA long term plan that
called for Columbus, Hermes, and the ESA Freedom module as primary
long-term projects. ESA had been searching for a replacement plan
that they could get approved; the solution was to junk Columbus,
reduce Hermes to an experimental program with a flight "indefinitely
delayed" (Certain high ESA officials who have been to Kitakyushu
remarked that "indefinitely" should be replaced by "infinitely").
Thus, they were about giving up on their previous goal of European
seperate manned access to space.
More Recent:
Late last month, the revised long term plan was rejected.
The mood inside ESA is best described as "depressed".
Analysis:
Chaos. There is continuing confusion over wether ESA will continue
to exist as the organization it is today. The EC has some fundamental
problems with ESA being a policy and technology group (it wants to mucle
in on the policy sector), and one of ESA's keystone funding sources
(Germany) is looking for ways to back out as it copes with integrating
East Germany. ESA has _no_ long term plan that its members have approved,
and the future status of everything it's doing must be seen as questionable.
outlook:
Poor. If you think NASA is in deep do-do over Freedom, take a
closer look at ESA. Our space agencies globally may need our help
just to survive much longer, at this rate. 8-(
-george william herbert
gwh@soda.berkeley.edu gwh@lurnix.com gwh@uchu.isu92.ac.jp until 28 aug
------------------------------
Date: Sat, 18 Jul 1992 22:42:30 GMT
From: Henry Spencer <henry@zoo.toronto.edu>
Subject: How to find limiting magnitude? (was Re: Solar Power Satellites)
Newsgroups: sci.space
In article <1992Jul18.171611.17214@lut.ac.uk> M.L.Cook3@lut.ac.uk (Vaxaholics Anonymous) writes:
>... The William Herschel telescope is
>kitted out with software to stop astronomers accidentally pointing the
>telescope at the moon and thus wrecking the detectors, but imagine a scenario
>where scores of bright satellites were swimming about the sky with much
>faster and unpredictable orbits than the moon...
Fortunately, this isn't an issue for powersats, which are (in the classical
concept, anyway) even more predictable than the Moon, because they're in
Clarke orbit. They're motionless in the sky (relative to the Earth, not
the stars).
--
There is nothing wrong with making | Henry Spencer @ U of Toronto Zoology
mistakes, but... make *new* ones. -D.Sim| henry@zoo.toronto.edu utzoo!henry
------------------------------
Date: 19 Jul 92 03:58:34 GMT
From: George William Herbert <gwh@soda.berkeley.edu>
Subject: Manned/Unmanned
Newsgroups: sci.space
In article <BrLwyG.7Hp@zoo.toronto.edu> henry@zoo.toronto.edu (Henry Spencer) writes:
>CRAF was cut from the NASA budget because CRAF/Cassini appeared to be
>firmly on track to overrun its budget cap, and Congress had already
>warned NASA that CRAF was the more expendable of the two. Cassini is
>still in danger, despite semi-protected status as an international
>program, precisely because its funding requirements continue to skyrocket.
People inside Cassini are saying that it looks like it's safe.
Golden apparently likes Cassini as an idea quite a bit, and once he
got what he wanted in scalebacks (removed the platform, but all the
instruments are still there) he's put his weight behind it.
It has been pushed back 18 months or so, from latest peeks
at schedules. Which isn't bad, since someone here who's working on
Huygens said that they're having deadline problems which the slip
solved.
-george william herbert
gwh@soda.berkeley.edu gwh@lurnix.com gwh@uchu.isu92.ac.jp until 28 aug
------------------------------
Date: Sun, 19 Jul 1992 03:42:42 GMT
From: Henry Spencer <henry@zoo.toronto.edu>
Subject: Space Transportation Infrastructure Costs
Newsgroups: sci.space
In article <1992Jul17.162622.13291@elroy.jpl.nasa.gov> baalke@kelvin.jpl.nasa.gov writes:
>>Cassini being shrunk to fit on a Titan IV without the new SRBs...
>
>You left out a few pertinent details about the SRMs. To date, the SRMs
>has had only one successful test firing which occurred just a month ago,
>and they still have to undergo several more test firings before they can
>be declared flight ready. The first test firing resulted in a spectacular
>explosion...
This is why one does test firings. The early record of any of the major
expendables makes the upgraded Titan SRMs look like paragons of good
behavior.
Actually, I agree that the SRM-upgrade program is a bit worrisome, but
*not* because of that explosion. The organizational aspects, like
Hercules's unwisely low bid on the contract, would concern me more.
>... considering the track record of
>the SRM development, NASA decided that using the SRMs was too risky.
Not quite right, actually. The Cassini people are still hoping to use
them. The decision was only that a backup strategy -- plain Titan IV --
was in order. (Note that it was a secondary aspect of the redesign,
which was mainly directed at lowering Cassini's pricetag.)
If one has been so stupid as to commit oneself to a program which can
be destroyed by a single launch failure -- and even plain old Titans do
still fail, as witness the Titan explosion that followed Challenger --
then there is reason for some caution. However, there is also a point
where this is being carried too far, and the mission is being badly
compromised by the refusal to take risks. I haven't studied Cassini
closely enough to say whether it's reached that point, but I'd guess
it's close. Both the Neptune/Pluto proposal and the various Titan-
launched Mars-sample-return proposals are well past it.
--
There is nothing wrong with making | Henry Spencer @ U of Toronto Zoology
mistakes, but... make *new* ones. -D.Sim| henry@zoo.toronto.edu utzoo!henry
------------------------------
Date: Sun, 19 Jul 92 03:47:22 EDT
From: isu@VACATION.VENARI.CS.CMU.EDU
Return-Path: <mwm@a.gp.cs.cmu.edu>
Received: from a.gp.cs.cmu.edu by VACATION.VENARI.CS.CMU.EDU id aa00191;
18 Jul 92 3:16:28 EDT
Received: from po5.andrew.cmu.edu by A.GP.CS.CMU.EDU id aa16003;
18 Jul 92 2:54:06 EDT
Received: by po5.andrew.cmu.edu (5.54/3.15) id <AA29173> for mwm+space@a.gp.cs.cmu.edu; Sat, 18 Jul 92 02:53:58 EDT
Received: via switchmail for space+@andrew.cmu.edu; Sat, 18 Jul 1992 02:53:57 -0400 (EDT)
Received: from BITNET.CC.CMU.EDU by po5.andrew.cmu.edu (5.54/3.15) id <AA29168> for SPACE+; Sat, 18 Jul 92 02:53:53 EDT
Received: from ALASKA.BITNET (MAILER@ALASKA) by BITNET.CC.CMU.EDU (PMDF #12078)
id <01GMIBEQE1MOBW9PI1@BITNET.CC.CMU.EDU>; Sat, 18 Jul 1992 02:53 EDT
Date: Fri, 17 Jul 92 22:43:23 -0900
From: "ACAD3A::FSRRC" <FSRRC%ALASKA.BITNET@bitnet.cc.cmu.edu>
Sender: "ACAD3A::FSRRC" <FSRRC%ALASKA.BITNET@bitnet.cc.cmu.edu>
To: SPACE+@andrew.cmu.edu
Message-Id: <01GMIBEQE1MOBW9PI1@BITNET.CC.CMU.EDU>
Source-Info: Sender is really mwm@A.GP.CS.CMU.EDU
Status: RO
ISECCo Update: An extract of the 1991 annual newsletter--a
little late, but we did better than last year!!!
International Space Exploration and Colonization Company
I.S.E.C.Co.
P.O. Box 60885 Annual Newsletter
Fairbanks, Ak. 99706 Issue #5: 1991
(907)457-2674 July 1, 1992
Comments and Credits
This is the International Space Exploration and Colonization
Company's fourth annual newsletter. ISECCo is a certified 501
(c)(3) non-profit organization, incorporated in Alaska. We are a
co-operative devoted to space oriented research and development.
Except as noted this newsletter was written by Ray R.
Collins. Other people who contributed to its writing, editing
and distribution are: Debi Wilkinson, Florence Collins, Chandra
Schaffer, Terry Fike and Kraig Smyth; ISECCo extends its thanks
to their generous donation of time to this effort.
To become an ISECCo member write to the address above for an
information package and membership form. We also have a
corporate membership status; if your business wishes to join
please request the corporate forms.
CONTENTS:
Comments and Credits........................Page 1, Column 1
Contents....................................Page 1, Column 1
Overview....................................Page 1, Column 1
The Basement Biosphere .....................Page 1, Column 2
The 1991 Garden.............................Page 2, Column 2
The Biosphere Diet..........................Page 3, Column 1
Everything Else We Did......................Page 3, Column 2
Sealing..................................Page 3, Column 2
Photography..............................Page 4, Column 1
Fish.....................................Page 4, Column 1
IDEEA One Conference.....................Page 5, Column 1
To Design a Biosphere ......................Page 5, Column 1
The ISECCo Biosphere........................Page 5, Column 2
1992 Projects ..............................Page 6, Column 2
That Boring Office Stuff....................Page 7, Column 1
Donations...................................Page 7, Column 2
The Last Line...............................Page 8, Column 1
Overview
This newsletter primarily reflects the accomplishments of
the last year (1991). However it also shows the accomplishments
of the last four years. It proves that we successfully created
an organization that will produce results. We haven't been
sitting around discussing and wondering what it would be like to
colonize space or wishing something would happen, we have rolled
up our sleeves and set to work on it. We (literally) got our
hands dirty planting gardens, building greenhouses, raising
earthworms and cleaning fish tanks.
This work needs to be done if we are to know how to support
humans in space colonies. We have given little consideration as
to colony construction or location since that is a long way off,
but we are bent on finding what is necessary for human life
support in a colony. This research field is called biospherics.
Our biosphere project was taken as our first project both because
it is within our means and due to the huge research gap in
biospherics.
In November 1991, the University of Houston Architecture
department sponsored a conference called the International Design
for Extreme Environments Association - One (IDEEA One). Our
president, Ray Collins, attended this conference and made
contacts with other professionals working in fields related to
ours. This was a valuable learning experience both for Ray and
ISECCo.
As well as reporting on the latest progress of our biosphere
experiment we have included pictures of some of the work that we
did over the last four years. We have included a brief
explanation of biospheres and ecosystems in general and how our
biosphere will be assembled.
A few final comments on this newsletter:
This newsletter shows where our members' valuable donations
of time and money were spent. If you'd like a copy of the entire
newsletter please feel free to get in touch. If you'd like to
join we'd be happy to welcome you.
ON OTHER MATTERS:
Excavation is progressing. We hope to be pouring the floor
by the end of this summer. Unfortunately our ASTF grant was not
awarded (the decision was 7/15/92 so we haven't heard why we were
turned down yet). So progress after that may be limited.
We planted a small garden this year, as well upgraded the
berry patch. Work at the hanger site is progressing, but it too
is limited by finances. Over this last winter we ran the
basement biosphere (successfully), but this spring it began to
overheat (due to all the lights) so we had to shut most of it
down.
If any of you would like to be on our computer mailing list
just send me a note.
--Ray::President, ISECCo
FSRRC@ALASKA.BITNET (bitnet)
or
74010,3722 (Compuserve)
or
R.Collins36 (Genie)
:::The International Space Exploration and Colonization Company:::
:::P.O. Box 60885::Fairbanks::Alaska::99706:::
Researching and Developing
space oriented technology for the
betterment of mankind.
* * * * * * * * * * * * {end}
------------------------------
End of Space Digest Volume 15 : Issue 014
------------------------------