Space & Astronomy/Space and Astronomy (October 1993).iso/mac/TEXT/SPACEDIG/V12_5/V12_540.TXT

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Subject: SPACE Digest V12 #540

SPACE Digest                                     Volume 12 : Issue 540

Today's Topics:
             News From OSCAR-11 06-Nov-90
              Profit from space?
             Re: LNLL Inflatable Stations
            Waveriders and Gravity Assists
Re: LLNL Astronaut Delivery (was Re: You Can't Expect a Space Station)
            Re: Galileo Update - 11/06/90
       Re: You Can't Expect a Space Station to be Cheap

Administrivia:

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Date: 7 Nov 90 03:48:16 GMT
From: usc!zaphod.mps.ohio-state.edu!uakari.primate.wisc.edu!dali.cs.montana.edu!masscomp!ocpt!tsdiag!ka2qhd![e-mail]  (John Magliacane)
Organization: KA2QHD - OCEAN NJ
Subject: News From OSCAR-11 06-Nov-90
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SB NEWS @ ALLBBS < KD2BD $UOSAT.105
News From OSCAR-11 06Nov90



* UOSAT-2 OBC STATUS INFORMATION *

DIARY OPERATING SYSTEM V3.1 SMH MLJM MSH

 Today's date is 6 /11 /90  (Tuesday)
 Time is 14 :18 :25 UTC
 Auto Mode is selected
 Spin Period is - 282
 Z Mag firings  = 0
 + SPIN firings = 11
 - SPIN firings = 7
 SEU count      = 132
 RAM WASH pointer at 982
 WOD commenced 6 /11 /90 at 0 :0 :10
 with channels 50 ,51 ,52 ,57 ,
 Last cmnd was 109 to 0 , 0
 Attitude control initiated, mode 1


        **** UoSAT-OSCAR-11 BULLETIN     06 November 1990 ****

                     UoSAT MISSION CONTROL CENTRE
      University of Surrey, Guildford, Surrey, GU2 5XH, England

** AO-16 / UO-14 BBSs COMMISSIONED **

The Packet Bulletin Board software which has been running in 'beta test'
versions on UoSAT-OSCAR-14 since July has now been loaded to AO-16.  This
follows a period of intense development by Jeff Ward, G0/K8KA, and Harold
Price, NK6K, getting software ready for hundreds of users expected to access
AO-16 and UO-14.

The programs loaded to the satellites, when combined with several
groundstation client programs, implement the PACSAT communications protocols
proposed by Jeff and Harold in papers presented at the recent ARRL Amateur
Radio Computer Networking Conference.  The protocols provide a connected-mode
file transfer facility called FTL0 and a standard broadcast mode for bulletins
and other items of general interest.

When someone is up or downloading in connected mode you will see packets from
the FTL0 server callsign:  PACSAT-0 (on AO-16) or UOSAT3-12 (on UO-14).
Bulletins being broadcast will have source callsigns UOSAT3-11 or PACSAT-11.
These packets may contain some ASCII text, although each will begin with a
short binary header.

The PACSAT protocol suite requires special groundstation software to interpret
binary headers and implement protocol handshakes. Papers in the 9th ARRL
Networking Conference proceedings describe the protocols in detail.  Software
for groundstations with IBM-PC type computers will be made available free by
UoS through dial-up bulletin boards and on-line information systems.

The release of the groundstation software, expected around 8 or 9 November,
will mark the official opening of UO-14 and AO-16 for communications by any
suitably-equipped, licensed radio amateur.  With LO-19 following stortly and
FO-20 already providing service, the Amateur Satellite Service will soon have
a useful and interesting network of store-and-forward satellites.

** RS-14/RUDAK-2

Reliable sources within the Soviet Union indicate that the launch of RS-
14/RUDAK-2 is now expected to happen on or about November 24, 1990.  UA3CR
requests the help of radio amateurs all over the world to collect telemetry
and send it via packet radio or via a SSB net to him.  The first day's worth
of telemetry will transmitted via a CW beacon at 20 WPM on 145.822 or on
145.948 MHz SSB and will be vitally important to ground controllers.  Later,
after ALL systems are working properly on the RUDAK-2 transponder,
PSK/BBS/MODE B operations will begin.

** AO-13

The transponder schedule is as follows:

Mode B : MA 000-095
Mode-JL: MA 095-125
Mode-LS: MA 125-130
Mode-S : MA 130-135
Mode-BS: MA 135-140
Mode-B : MA 140-256
Omnis  : MA 220-040

This schedule is expected to continue through 26 Dec 90.
BLON = 180  and  BLAT = 0


** $BID **

Please use BID $UOSAT.105 for PR BBS use.


/EX
--
John A. Magliacane                 FAX  : [phone]
Electronics Technology Department  AMPR : KD2BD @ NN2Z.NJ.USA.NA
Brookdale Community College        UUCP : ...!rutgers!ka2qhd!kd2bd
Lincroft, NJ  07738  USA           VOICE: [phone] ext 607

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Date: Wed, 07 Nov 90 10:07:10 CET
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Comment: CROSSNET mail via MAILER@CMUCCVMA
Subject: Profit from space?

Date: 07 November 1990, 09:53:36 CET
From: Lutz Massonne             [phone]     LMASSONN at ESOC
To:   [e-mail]
Subject: Profit from Space?

Some recent posters stated that the main goal of a Space Agency should
be earning profilts from space development.
This may be only indirectly correct.
I don't know about NASA, but ESA is not able to gain any profit by its
constitution.
The purpose of ESA is to develop space technologies and to perform scientific
research (and to benefit European industry :-) ).
As soon as any field of ESA's activity get profitable, it has to be
taken out of ESA and handed over to industry or other organisations.
This happened with Ariane (which is now marketed by Arianespace, a
legally private company), and ESA pays to Arianespace for the launches
like any other customer.
The meteorological business is handled by EUMETSAT (though the satellite
operations are still with ESOC) and the communication satellites are
operated by EUTELSAT (but development of new communication satellite
technology is still done by ESA).

If the situation is the same with NASA, it mey be a cheap shot to
say "they can't make profit out of space" if the people are not PERMITTED
to do so.

Regards, Lutz Massonne

Disclaimer: Neither my company nor ESA is responsible for my opinions

 +===================================+===============================+
 | Lutz Massonne                     |This mail expresses my personal|
 | Robert-Bosch Str. 5               |opinions only and is in no way |
 | D-6100 Darmstadt, FRG             |official or reliable.          |
 +===================================+===============================+

------------------------------

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Date: 8 Nov 90 04:04:48 GMT
From: munnari.oz.au!brolga!bunyip.cc.uq.oz.au!iceman![e-mail]  (M Parigi)
Organization: JCUNQ, Townsville, Qld, Australia
Subject: Re: LNLL Inflatable Stations
References: <[e-mail]>, <[e-mail]>
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What are the repairment proposals for damage due to space debris for the
LLNL inflatable space station. Would the material tend to tear due to the
pressure differential once a small rip was instigated (fail catastrophically,
much like an ALOHA airliner did some time ago, ripping its top off) like
most plastics, composites would; or would it tend to retain strength around the
hole like (unfatigued) metal, for the proposed material of the inflatable
station. What is the material being proposed?

    Marco Parigi.
    Electrical and Computer Engineering
    James Cook University N.Q. (They had nothing to do with it)

------------------------------

Date: 7 Nov 90 16:54:34 GMT
From: sdd.hp.com!elroy.jpl.nasa.gov!aristotle![e-mail]  (Eric Slimko)
Subject: Waveriders and Gravity Assists

I just read an interesting concept the other day in the latest
issue of Final Frontier in the "Notes from Earth" column, I believe.
It involved using a waverider design on a spacecraft in order
to dive through the atmosphere of a planet to get really
close for the maximum gravity assist.  The article claimed it could
cut a 12 year trip to Pluto down to 4 years (!).

I don't know much about the equations governing waveriders, but I
am really surprised that the additional boost from getting closer
is that much greater than the drag induced from going through the
atmosphere.

The article didn't treat the subject heavily, and the numbers 12 and 4
were about the only ones in there.  Has anyone done/heard some work
on this subject and would like to give some more detail?
--
Eric Slimko                |  Jet Propulsion Laboratories
[e-mail] |  NASA/CalTech
0, unseen,,
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Date: 8 Nov 90 19:45:47 GMT
From: swrinde!cs.utexas.edu!usc!elroy.jpl.nasa.gov!jato!mars.jpl.nasa.gov![e-mail]  (Ron Baalke)
Organization: Jet Propulsion Laboratory, Pasadena, CA.
Subject: Magellan Update - 11/08/90
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                        MAGELLAN STATUS REPORT
                           November 8, 1990

     The Magellan spacecraft is in good health, in its Superior Conjunction
mode.  The daily STARCALS (star calibrations) and twice daily DESATS
(desaturations) have been successful.

     Yesterday's commands to re-configure the spacecraft were successfully
uploaded, including setting the command loss timer to 9 days and disabling
the S-band RF loss monitor.

     Today the spacecraft controllers plan to play back track 4 of the tape
recorder and uplink other configuration commands in preparation for Friday's
upload of the mapping sequence.  Execution of the sequence will begin with
orbit #787 at 4:07 AM PST on Saturday, November 10.

     If mapping resumes as now scheduled, the "Superior Conjunction Gap" will
include 110 orbits or about 22 degrees of longitude.  This area will be mapped
between June 26 and 11 July 11, 1991, when Magellan again passes over.
      ___    _____     ___
     /_ /|  /____/ \  /_ /|
     | | | |  __ \ /| | | |      Ron Baalke         | [e-mail]
  ___| | | | |__) |/  | | |___   Jet Propulsion Lab | [e-mail]
 /___| | | |  ___/    | |/__ /|  M/S 301-355        |
 |_____|/  |_|/       |_____|/   Pasadena, CA 91109 |

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Date: 8 Nov 90 04:07:04 GMT
From: sumax!thebes!polari![e-mail]  (Charles Radley)
Organization: Seattle Online Public Unix [phone]
Subject: Re: LLNL Astronaut Delivery (was Re: You Can't Expect a Space Station)
References: <[e-mail]>, <[e-mail]>, <[e-mail]>
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Payload Systems did indeed slip through the net.   What I mean by
that is that they did obtain an export license, but  the license
was issued by the Department of Commerce, and not by the Department
of State.    The latter was extremely annoyed, and had strong words
to say to the Dept of Commerce.
It is now highly unlikely that Commerce will want to incurr the wrath of
State again, and are not likely to issue any more licenses without State's
approval.
  Ref USBI and CYSA - there were lots of reports in the media in the
summer that  an export license had been issued to USBI.   However, I
never saw a formal announcement.   I attended the Vandeburg Space
Week conference at the end of July, where Norman Bowles, Associate
Director of Licensing Programs at the Department of
Transportation stated strongly that the reports in the media were
incorrect, and that no formal approval had been given.
  I still have not seen a formal announcement.     Have you ?

If on the other hand, USBI did get a license, then it sets a significant precedent.   I will investigate the possibility of buying stock in CYSA and/or
USBI, since with low cost soviets launch vehicles, they cost to orbit
will be unassailable.

------------------------------

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Date: 8 Nov 90 21:01:58 GMT
From: usc!elroy.jpl.nasa.gov!euclid.jpl.nasa.gov![e-mail]  (Peter Scott)
Organization: Jet Propulsion Laboratory, NASA/Caltech
Subject: Re: Galileo Update - 11/06/90
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In article <[e-mail]>, [e-mail] (Ron Baalke) writes:
>
>                         Galileo Status Report
>                           November 6, 1990
>
>      A NO-OP command was sent yesterday to the Galileo spacecraft to reset
> the Command Loss Timer [...]

For those of you wondering what the other commands in the Galileo
spacecraft instruction set are, here are a few of them:

BIC    Branch on Inferior Conjunction
THA    Twirl High-gain Antenna
IRL    Ignore Receiver Lock
JMP    Jump on Major Planet
RUI    Reject Ugly Image

I'm sure that some more spacecraft experts on the net would be
happy to post the rest of the set...

:-)   :-)   :-)


--
This is news.  This is your       |    Peter Scott, NASA/JPL/Caltech
brain on news.  Any questions?    |    ([e-mail])

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Date: 8 Nov 90 17:54:46 GMT
From: usc!samsung!rex!rouge![e-mail]  (Fraering Philip)
Organization: Univ. of Southwestern LA, Lafayette
Subject: Re: You Can't Expect a Space Station to be Cheap
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In article <[e-mail]> [e-mail] (Russ Cage) writes:

RC>Show me anything like SSX which has flown even 2 flights, and
RC>come within a factor of 2 of its cost target.

Well, for starters, Max Hunter, SSX's main proponent, says that it is
less complex than a major airliner. _And_ I have read that the same
energy involved in launching something into low orbit is about the same
as sending it to Australia via airplane, due to the fact that the
airplane spends all of its time down in the soup.

Phil

------------------------------

End of SPACE Digest V12 #540
*******************