Space & Astronomy/Space and Astronomy (October 1993).iso/pc/text/spacedig/v11_2/v11_220.txt

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Subject: SPACE Digest V11 #220

SPACE Digest                                     Volume 11 : Issue 220

Today's Topics:
             space news from Jan 1 AW&ST
           Payload Status for 04/03/90 (Forwarded)
               Re: Forward,R.L.
        Re: HST Image Status for 04/01/90 (Forwarded)
       Re: Reports of Io's vulcanism before VOYAGER 1?
              Re: Martian Standard Time
         Reports of Io's vulcanism before VOYAGER 1?
             PostScript pictures archive?
     Re: Quick launches ( was: Intelsat / Titan Failure )
                Re: KSC Tours?
        Re: HST Image Status for 04/01/90 (Forwarded)
         More on GPS Constellation Re-phasing
----------------------------------------------------------------------

Date: 4 Apr 90 04:10:46 GMT
From: cs.utexas.edu!news-server.csri.toronto.edu!utgpu!utzoo![e-mail]  (Henry Spencer)
Subject: space news from Jan 1 AW&ST

[Yes, I know, this is a bit out of sequence.  Given that I'm more or less
caught up on current issues -- I consider running a month behind to be
normal, given Post Office, reading the things, etc. -- I'm going back for
quick summaries of the issues I missed due to the subscription foulup.
My thanks to Alex Sim of Dryden and to the Dryden library, for supplying
the issues I missed, and to Mary Shafer for arranging it.]

AW&ST's "Aerospace Laurels" for this year go to, among others, Edward C.
Stone [head scientist for Voyager] and the Voyager team.

Brazilian Space Agency takes initiative to organize an international
effort to study deforestation using space remote sensing.  There is much
concern about the problem but coordination has been lacking.

Bush approves Chinese launch of three US-built satellites long booked
to go up on Long March, while warning that this is a matter of honoring
prior commitments to Hong Kong and Australian customers, and that there
will be no more such approvals.  Congress is annoyed, especially since
action on the matter had been rumored for some time but came just after
Congress recessed for the holidays.

Sweden reserves Pegasus launch for the Freja auroral-science satellite.
Freja is technically still booked to go up piggyback on Long March in
mid-1992, but politics make that unattractive and the dedicated launch
simplifies matters.  The $100k deposit for Pegasus has been paid, with
launch slated for the end of 1992 to give time for minor changes to the
satellite to fit it for Pegasus.  Price will be $7-7.5M, depending on
range costs, probably more than the actual price for Long March but
involving fewer overhead expenses.

US and USSR sign agreements for cooperative biomedical research on Mir
and the space shuttle.  The high point is the possibility of a US
astronaut going up to Mir and/or a Soviet cosmonaut on the shuttle.
Lesser plans are development of compatible databases, use of advanced
US medical equipment on Mir, standardized measurement techniques for
determining calcium loss from bones, and routine specimen exchange.

ESA picks ejection seats as the crew-escape system for Hermes.

Second Galileo course correction successful Dec 22.

Soviets plan to launch next Mir add-on module, primarily for materials
technology, in early April.  It will have a docking ball like Mir's for
docking of other vehicles, rumored to include Buran.  It will also have
very large solar arrays to run its equipment, and there may be some
small delay while the Soviets make sure that Kvant 2's array-deployment
problems do not recur.

Pictures and details on the infrared camera riding in the pod on Columbia's
fin, aimed at measuring topside temperatures on the orbiter for use in
future designs.  Turns out one of the hottest areas on the whole orbiter
is the gap between inboard and outboard elevons, where hot air from below
flows up at high speed and there is little chance for heat to radiate.

Letter from John J. Kannin, criticizing NASA for basing space station
cost estimates on what it can get from Congress, rather than on what
is needed to meet specs.  "This sort of political system engineering
has been occurring for so long throughout the domestic space industry
that it is now accepted as the way to do business.  However, it appears
that our profit-conscious foreign partners have not accepted this
apparent attempt at technology infusion.  For this reason there may
someday be an operational space station.  However, it most likely will
be made in Japan."
--
Apollo @ 8yrs: one small step.|     Henry Spencer at U of Toronto Zoology
Space station @ 8yrs:        .| uunet!attcan!utzoo!henry [e-mail]

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

Date: 3 Apr 90 18:32:30 GMT
From: trident.arc.nasa.gov![e-mail]  (Peter E. Yee)
Subject: Payload Status for 04/03/90 (Forwarded)


    Daily Status/KSC Payload Management and Operations 04-03-90.


    - STS-31R HST (at pad-B) -

    HST battery charging and confidence testing were active
    until 1000 hours yesterday.  Both operations were terminated
    due to an unplanned power failure in the LC-39 area which
    powered down the orbiter and HST.  Battery charging was
    restarted on second shift Monday and will.continue through
    today.  Confidence testing is expected to restart first
    shift today.


    - STS-35 ASTRO-1 (at OPF) -

    Non-power up payload closeouts were performed Monday and
    will continue through first shift today.  Powered up
    closeouts will be performed on second shift today.


    - STS-40 SLS-1 (at O&C) -

    Preps for rack and floor installation into the module were
    worked Monday and will continue today.  The actual roll in
    of the floor is scheduled for 1200 hours today.


    - STS-42 IML-1 (at O&C) -

    Rack 5 staging and nutplate installations onto the floor
    were performed Monday.  Racks 3, 5, 7, 8, 9, 10, and 11
    staging operations are scheduled for today.


    - STS-45 (Atlas-1)-

    Trunnion installation and pallet joint kit installation on
    frame 1 were worked Monday and will continue today.  Pallet
    joint kit installation on frame 4 will also be worked today.


    - STS-55 SL-D2 (at O&C) -

    No activities were performed on Monday.  Rack 12 staging
    operations are scheduled for second shift today.


    - HST M&R (at O&C) -

    ORUC cable installation was performed Monday.  Cable
    continuity and isolation checks will be performed today.

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

Date: 4 Apr 90 05:55:15 GMT
From: [e-mail]  (Bill Ganoe)
Subject: Re: Forward,R.L.

Forward has written several articles on interstellar travel since 1976.
Two that I have in front of me right now are:

   "Roundtrip Interstellar Travel Using Laser-Pushed Lightsails"
      (AIAA) *Journal of Spacecraft*, Vol. 21, No. 2, Mar-Apr 1984,
      pp 187-195.

   "Starwisp: An Ultra-Light Interstellar Probe", (AIAA) *Journal
      of Spacecraft*, Vol. 22, No. 3, May-Jun 1985, pp. 345-350.

--
"Any society that needs | William H. Ganoe      [e-mail]
disclaimers has too many|  SIE Dept, Univ. of Arizona
lawyers." -- Eric Pepke |  Tucson, AZ 85721; USA

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

Date: 4 Apr 90 05:00:47 GMT
From: zaphod.mps.ohio-state.edu!usc!cs.utexas.edu!news-server.csri.toronto.edu!qucdn![e-mail]  (Arnold G. Gill)
Subject: Re: HST Image Status for 04/01/90 (Forwarded)

In article <[e-mail]>, [e-mail] (David Hafken)
says:
>
>Hi. could someone tell me how to view the jupiter picture posted earlier on
>a macintosh? e.g. how to convert it and what prog. to use to view it.
>Any help would be greatly appreciated.
     If I remember right, this is a PostScript image that has been compressed
on a UNIX box, and then uuencoded.  So you would have to uudecode it,
uncompress it, and then dump the resultant PostScript file to your favourite
PostScript printer.  However, you may not be able to use any version of
compress.  There are 12, 16 , and 20 bit versions, and they are not downward
compatible.  My PC compress is only 16 bit, unfortunately.
-------
 -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
|  Arnold Gill                        |                                     |
|  Queen's University at Kingston     |     If I hadn't wanted it heard,    |
|  BITNET   : gilla@qucdn             |       I wouldn't have said it.      |
|  X-400    : [e-mail]  |                                     |
|  INTERNET : [e-mail]  |                                     |
 -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

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

Date: 5 Apr 90 01:12:58 GMT
From: [e-mail]  (Eugene Miya)
Subject: Re: Reports of Io's vulcanism before VOYAGER 1?

This was a paper received before Encounter by Stanton Peale (UCSB) on tidal
heating, published the week of Encounter by Science (I still have)
foregoing the length of the usual review process.  BEFORE this were some
JPL studies on the sulfur flux tube which shoots between Jupiter and Io.
There were images where they blotted out the disk of Io to see the sulfur.
This is not the same thing as vulcanism.  Peale got a big award.

To Larry Klaes:
Sorry to post, email didn't work, but Larry, I will be in the Boston area the
3rd week and DEC/Marlboro on the 19th.  Contact brunner@eagle1 on the Enet.
Probably at MIT on the 17th.

--e.n. miya, NASA Ames Research Center, [e-mail]
  {uunet,mailrus,most gateways}!ames!eugene

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

Date: 4 Apr 90 15:03:22 GMT
From: att!cbnewsl!clyde![e-mail]  (Forrest Gehrke,2C-119,7239,ATTBL)
Subject: Re: Martian Standard Time

In article <[e-mail]>, [e-mail] (Henry Spencer) writes:
> In article <[e-mail]> [e-mail] (SIMMONS DONALD F) writes:
> >>[Phobos and Deimos]
> >>I don't think they're massive enough to cause large tides...
> >
> >Kind of hard to have tides when you don't have oceans :-)
>
> Also, both the solid crust of a planet and its atmosphere have tides,
> although admittedly much less conspicuous ones.
> --





Aren't the sulphur volcanos on one of the moons of
Jupiter caused by the heat generated by tides?  If true,
that would seem conspicuous.

Forrest Gehrke [e-mail]

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

Date: 4 Apr 90 12:52:19 GMT
From: @decwrl.dec.com  (N = R*fgfpneflfifaL 04-Apr-1990 0856)
Subject: Reports of Io's vulcanism before VOYAGER 1?


        Were there any science reports, or even science fiction stories,
    which "anticipated" volcanic activity on Jupiter's Galilean moon Io
    *before* the flyby of VOYAGER 1 in 1979?  Please give details and
    sources, thanks.

        Larry Klaes  [e-mail]
             or - ...!decwrl!wrksys.dec.com!klaes
                 or - [e-mail]
                     or - [e-mail]
                     or - [e-mail]

             N = R*fgfpneflfifaL

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

Date: 4 Apr 90 17:31:19 GMT
From: ccncsu![e-mail]  (Kirk Pearson)
Subject: PostScript pictures archive?


Sorry for this stupid request, but does anyone know if there is an
archive for the PostScript pictures that come across this group?
Please e-mail any archive site addresses to me.  I will e-mail them to
anyone else who E-MAIL's me a request for them.  Thanks.


|      |      |      |     |    |    |    |   |   |   |   |  |  | | | | ||||||
     ___  __   ___                 Kirk Pearson
    /   \/  \ |   \                uunet!csu-cs!pearson
  _/         \|    \               [e-mail]
                \__            pearson%handel.cs.colostate.edu@cunyvm

Time sneaks up on you like a windshield on a bug. -- Jon Lithgow
|      |      |      |     |    |    |    |   |   |   |   |  |  | | | | ||||||

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

Date: 4 Apr 90 19:54:38 GMT
From: [e-mail]  (SERRE GLENN)
Subject: Re: Quick launches ( was: Intelsat / Titan Failure )

In article <[e-mail]> [e-mail] (Fraering Philip) writes:
>About quick launches: I thought the obstacle to fast launches on many of
>these vehicles was the payload integration procedure.
>For example: the Intelsat was installed wrong (or the wrong software was
>used) on that Titan launch, and look what happened.

Actually, I think the problem was with Martin's change control system, not with
Payload Integration, per se.

>Is there any way to make this cheaper, more reliable, and faster?

Standardization of payload weights, trajectories, interfaces,
and environments would help,
but there would be performance trade-offs.

--Glenn Serre
[e-mail]

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

Date: 4 Apr 90 16:22:29 GMT
From: cs.utexas.edu!news-server.csri.toronto.edu!utgpu!utzoo![e-mail]  (Henry Spencer)
Subject: Re: KSC Tours?

In article <[e-mail]> [e-mail] (Mark A. Haun) writes:
>... wondering if there are any tours available (that may require
>arrangement ahead of time, small groups only, etc.) of some of
>the more restricted areas such as the Vehicle Assembly Building,
>etc.  It would sure be great to be able to see those areas, but is
>the general public allowed to view them?

Last I heard, getting into the VAB in particular practically requires
special endorsement from God nowadays.  A good many NASA employees
aren't allowed in there.  NASA is fussier about security these days,
and there is also some small safety issue, since the advent of the SRBs
made the old "no fuel in the VAB" rule impossible to maintain.
--
Apollo @ 8yrs: one small step.|     Henry Spencer at U of Toronto Zoology
Space station @ 8yrs:        .| uunet!attcan!utzoo!henry [e-mail]

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

Date: 4 Apr 90 20:34:19 GMT
From: rochester![e-mail]  (Paul Dietz)
Subject: Re: HST Image Status for 04/01/90 (Forwarded)

In article <[e-mail]> [e-mail] (David Hafken) writes:
>
>Hi. could someone tell me how to view the jupiter picture posted earlier on
>a macintosh? e.g. how to convert it and what prog. to use to view it.
>Any help would be greatly appreciated.

Before you decode the picture, note: (1) the date on which it was sent,
and (2) the name of the sender.

    Paul F. Dietz
    [e-mail]

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

Date:        Wed, 04 Apr 90 12:13:00 ADT
From: [e-mail]
Subject:     More on GPS Constellation Re-phasing

RE-POSITIONING OF GPS SATELLITES BEGINS (UPDATE)
------------------------------------------------
In order to maximize coverage for 2D and 3D positioning during the build-up of
the constellation of Global Positioning System satellites, the existing
satellites are being re-positioned.  This re-positioning of the satellites
within their orbital planes, termed re-phasing, began on 15 March with PRN 11 /
SVN 8.  The re-phasing involves changing the semi-major axis of the orbit using
the on-board thrusters and allowing the satellite to drift with respect to the
other satellites until the desired relative position is achieved.  Then the
thrusters are used again to bring the semi-major axis back to its original
nominal value.

The times for initiating and terminating the maneouvres for the affected
satellites are as follows (as of 4 April 1990):

Satellite          Initiate               Terminate           Unuseable
--------------------------------------------------------------------------------
SVN 8   PRN 11     15 Mar 90  03:55 UT    31 Oct 90           15/03:55-16/02:25
SVN 11  PRN  3     20 Mar 90  07:00 UT    17 Oct 90           20/07:00-20/12:20
SVN  9  PRN 13     29 Mar 90  01:42 UT     3 Oct 90           29/01:42-29/11:05
SVN 18  PRN 18      6 Apr 90  12:07 UT    24 Nov and 8 Dec 90
SVN 19  PRN 19     12 Apr 90  09:38 UT    31 Dec 90
SVN 6   PRN  9     19 Apr 90  09:28 UT    19 Apr 90 (slight tweaking?)
SVN 16  PRN 16     26 Apr 90  13:17 UT    20 Sep 90
SVN 13  PRN  2      3 May 90               1 Dec 90
SVN 14  PRN 14     13 May 90              10 Nov 90
SVN 10  PRN 12     20 May 90              20 May 90 (slight tweaking?)

Each satellite is expected to be set unhealthy during the initiate and terminate
maneouvres and until new ephemerides are uploaded to the satellite.  This
procedure could take up to one full day.

A warning has been issued that the above plans could change without notice.

The first three satellites in the above list have started to drift to
their new locations.  In the case of SVN 8 / PRN 11, the semi-major
axis of the satellite's orbit appears to have been lowered by about
13 km.

(Sources: Notice Advisories to Navstar Users and NASA Prediction
Bulletins)

========================================================================
Richard B. Langley                  BITnet:  [e-mail] or [e-mail]
Geodetic Research Laboratory        Phone:   [phone]
Dept. of Surveying Engineering      Telex:   014-46202
University of New Brunswick         FAX:     [phone]
Fredericton, N.B., Canada  E3B 5A3
========================================================================

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

End of SPACE Digest V11 #220
*******************