Space & Astronomy/Space and Astronomy (October 1993).iso/mac/TEXT/SPACEDIG/V09_5/V9_553.TXT

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Subject: SPACE Digest V9 #553

SPACE Digest                                      Volume 9 : Issue 553

Today's Topics:
    Re: space news from May 15 AW&ST (replacing computers)
              E-Prime Aerospace
            Re: Apollo 12 (And Surveyor 3)
     Re: Re-play of Apollo 11 TV Coverage and 20th Anniv. at NASM
Spinoffs are irrelevant (was Apollo-era technology spinoffs continue to enhance human life (Forwarded))
          Israel conf. on Aviation and Astronautics
   Re: A&E Network rebroadcast of APOLLO 11 coverage; PBS special.
            Re: Apollo 12 (And Surveyor 3)
Re: Apollo-11 lunar experiment still useful after 20 years (Forwarded)
            Re: Re^2: Fuel for lunar trip
             Re: Space Transportation Act
            Lunar Landing coverage on A&E
              Re: Two Questions
            Re: Apollo 12 (And Surveyor 3)
            Re: Apollo 12 (And Surveyor 3)
----------------------------------------------------------------------

Date: 10 Jul 89 23:36:10 GMT
From: haven!grebyn![e-mail]  (Rich Kolker)
Subject: Re: space news from May 15 AW&ST (replacing computers)

In article <[e-mail]> [e-mail] (Roy Smith) writes:
>In <[e-mail]> [e-mail] (Henry Spencer) writes:
>> the Atlantis crew replaced one of the orbiter's five general-purpose
>> computers after it failed [...] it took about four hours because the
>> computers are behind some of the middeck lockers and are not easy to get at.
>
>    I don't understand.  I thought that the various computers were all
>constantly checking each other and if one failed, it would be taken off line
>automatically and the others would continue to operate without it.  Why the
It's been a while since I've been on the net, but let me take a crack at
this one.  The GPC's are not taken off line automatically,  In the case
of
a problems, there is a 5x5 grid above the commander's chair that shows
GPC
status.  One axis is which computer is voting and the other is which
computer the voting computer says is going bad (has gone bad).  The
GPC control switches are directly above the CDR's seat and are taken
on/off line manually.  Generally, only three are kept powered up during
orbital flight although flight rules say all five are to be up, running
and available for launch and entry.  This from my feeble memory,
although
if something is really wrong, catch me and I'll go back to the manuals
for the final say (I've got the 2102s for the GPC's around here
somewhere).

++rich
+-----------------------------------------------------------------------+
| Rich Kolker
|
| uunet!telenet!richk  (not the reply to above)
+-----------------------------------------------------------------------+

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

Date: 12 Jul 89 04:40:30 GMT
From: [e-mail]  (Kevin William Ryan)
Subject: E-Prime Aerospace


   What is the present status of this company?  Are they launching, preparing
to launch, belly-up, in stasis, what?

                                                 Kevin Ryan
                                                 [e-mail]

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

Date: 14 Jul 89 05:02:19 GMT
From: jarvis.csri.toronto.edu!utgpu!utzoo![e-mail]  (Henry Spencer)
Subject: Re: Apollo 12 (And Surveyor 3)

In article <[e-mail]> [e-mail] (Charlie Richter) writes:
>Al Bean removed three pieces of Surveyor III:  some wire cable,
>some aluminum tubing, and the soil scoop.  (These three pieces
>were brought back to Earth for study.)

Charles Conrad Jr., writing in "Apollo Expeditions to the Moon" (NASA
SP-350), page 231:

"We cut samples of the aluminum tubing... and some electrical cables...
We managed to break off a piece of glass, and we unbolted the Surveyor
TV camera.  Then Al [Bean] suggested that we cut off and take back the
sampling scoop, and so we added that to the collection.  Then we headed
back..."

I think this can be considered authoritative.
--
$10 million equals 18 PM       |     Henry Spencer at U of Toronto Zoology
(Pentagon-Minutes). -Tom Neff  | uunet!attcan!utzoo!henry [e-mail]

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

Date: 6 Jul 89 16:08:11 GMT
From: usc!orion.cf.uci.edu!uci-ics!zardoz!tgate!ka3ovk!teemc!mibte!ccd700![e-mail]  (J. Sitek)
Subject: Re: Re-play of Apollo 11 TV Coverage and 20th Anniv. at NASM

In article <[e-mail]>, [e-mail] writes:
> A while back I believe someone posted some information about a cable
> channel (?Discovery? A&E?) planning to re-broadcast coverage of the
> Apollo 11 flight during the 20th anniversary; I had the impression they
> were going to cover a lot of the mission running it at the same time and
> date as the original.  Was this wishful thinking on my part?  If someone
> would let me know if this is indeed scheduled, I'd appreciate it.  Thanks.


Please post this information as I think it would be of general interest.

Thanks,

Jim Sitek

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

Date: 17 Jul 89 08:43:06 GMT
From: agate![e-mail]  (William Baxter)
Subject: Spinoffs are irrelevant (was Apollo-era technology spinoffs continue to enhance human life (Forwarded))

In article <[e-mail]>, yee@trident (Peter E. Yee) forwards:
>Jim Ball
>Headquarters, Washington, D.C.                     July 13, 1989
>
>
>RELEASE:  89-117
>
>APOLLO-ERA TECHNOLOGY SPINOFFS CONTINUE TO ENHANCE HUMAN LIFE
>
>[Nonsense about how NASA is primarily responsible for the development
>of cordless tools, radial tires and sliced bread]
>

Over 133 thousand people had arthroscopic surgery on their knee in the
US in 1987.  Ten years ago this surgery involved a hospital stay and
small chance of a full recovery.  Now it is an outpatient procedure,
with most patients walking the next day.  Much of the advance in this
surgery is due to the frequency of knee injury in the NFL.

Does this mean that Congress should appropriate billions of dollars to
support the NFL in order to benefit those in need of this surgery, or
that the spinoff argument is absurd?

William Baxter

ARPA: web@{garnet,brahms,math}.Berkeley.EDU
UUCP: {sun,dual,decwrl,decvax,hplabs,...}!ucbvax!garnet!web

CALL YOUR CONGRESSMAN NOW AND SCREAM AT HIM UNTIL HE AGREES TO
APPROPRIATE BILLIONS OF DOLLARS TO SUPPORT THE NFL SO THAT PEOPLE CAN
HAVE SAFE ARTHROSCOPIC SURGERY.

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

Date:         Mon, 17 Jul 89 19:51:48 IST
From: [e-mail]
Subject:      Israel conf. on Aviation and Astronautics

ANNOUNCEMENT

     It is my pleasure to inform you that the 31st Annual
Israel Conference on Aviation and Astronautics will take
place February 21-22, 1990.  The meetings on the first day
will be convened at the Tel Aviv Hilton, while the second
day will be at the Technion, Haifa.
     In the past, the Conference has elicited great interest
among its participants which number between 600-900 scientists,
engineers, and members of the academic community.  Participants
from the United States and Europe increase from year to year.
      The Conference Prodeedings are published in English and
include talks given by both Invited Speakers and contributing
participants.  It is available following the conference and
reaches a wide audience throughout the world.
     Papers may be submitted on the following topics:
   - Aerodynamics and Aeronautical Testing
   - Materials, Aeronautical Structures and Structural Testing
   - Structural Dynamics and Aeroelasticity
   - Aeronautical Design, CAD/CAM, Manufacturing and Maintenance
   - Propulsion and Combustion
   - Flight Control, Guidance and Navigation, Avionics
   - Flight Mechanics and Ballistics
   - Flight Operation and Systems
   - Space Systems and Astrodynamics

     Papers on recent advances in basic research and technology
applications in the above mentioned categories, as well as other
aerospace related fields, are welcomed.
     To receive a "Call for Papers" or any other information
you may contact us on the bitnet at AERCONF@TECHNION or send a
FAX to Mr. Gideon Waxsman at 00-972-4-231848.
Acknowledge-To: <AERCONF@TECHNION>

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

Date: 13 Jul 89 16:10:39 GMT
From: att!mtuxo![e-mail]  (54317-T.EBERSOLE)
Subject: Re: A&E Network rebroadcast of APOLLO 11 coverage; PBS special.

In article <[e-mail]>, [e-mail] (CUP/ASG, MLO5-2/G1 6A, 223-3283) writes:
>
>         The Arts and Entertainment (A&E) Cable Network is rebroadcasting
>     the original NBC coverage of the APOLLO 11 mission to the Moon in
>     1969.  The dates and times are:
>
>     "Liftoff" - July 16, 9:20 AM - 11 AM
>     "Moonwalk" - July 20, 10:30 PM - 2 AM
>     "Splashdown" - July 24, 1:30 PM - 3 PM

A&E is also broadcasting a series called "The Eagle and the Bear." Last
week's was a view of the Soviet and US Space Programs in the 50's and
early 60's showing what was happening concurrently in the two countries.
I have no idea if this series is strictly space related or if they plan
on continuing the comparison to the present. A&E seems to be letting it
float from week to week. I saw it at midnight last Friday. My TV schedule
indicates the next show will be broadcast this Saturday at 7:30pm (all
Eastern times).


--
Tim Ebersole ...!att!mtuxo!tee
                 or {allegra,ulysses,mtune,...}!mtuxo!tee

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

Date: 13 Jul 89 23:05:20 GMT
From: [e-mail]  (Eugene Miya)
Subject: Re: Apollo 12 (And Surveyor 3)

All material from Surveyor returned from to Moon to the Earth
(in fact all returned lunar material including donated Soviet
samples in US possesion) is cataloged with the Lunar Receiving Laboratory
(a part of the Universities Space Reseach Association) in Texas.

Some of the Surveyor parts are at JPL (as noted by Lee), responsible
Center at the time, some are Hughes Aircraft (I believe El Segundo),
and some are at LRL, circulated in exhibits, "researched," stored. etc.
like at the National Air and Space Museum.  There are mechanisms
to request these materials.  Don't contact me, contact the LRL.

Another gross generalization from

--eugene miya, NASA Ames Research Center, [e-mail]
  resident cynic at the Rock of Ages Home for Retired Hackers:
  "You trust the `reply' command with all those different mailers out there?"
  "If my mail does not reach you, please accept my apology."
  {ncar,decwrl,hplabs,uunet}!ames!eugene
                  Live free or die.

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

Date: 17 Jul 89 21:53:38 GMT
From: [e-mail]  (Jonathan Patrick Leech)
Subject: Re: Apollo-11 lunar experiment still useful after 20 years (Forwarded)

In article <[e-mail]> [e-mail] (Peter E. Yee) writes:
>APOLLO-11 LUNAR EXPERIMENT STILL USEFUL AFTER 20 YEARS
>
>     An experiment placed on the lunar surface 20 years ago by
>the Apollo 11 astronauts continues to be used to study the Earth-
>moon system by NASA's Jet Propulsion Laboratory, Pasadena,
>Calif., and other scientific centers around the world.

    And a whole bunch of the powered experiments might still be useful
if they hadn't been turned off in the 70's.  The same wonderful cost
effectiveness that nearly turned off the DSN for Voyager's Neptune
encounter.
--
    Jon Leech ([e-mail])
    Apple Integrated Systems
    __@/

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

Date: 2 Jul 89 11:55:27 GMT
From: b.gp.cs.cmu.edu![e-mail]
Subject: Re: Re^2: Fuel for lunar trip

In article <[e-mail]>, [e-mail] (Leonard Erickson) writes:
}Water takes up less volume than an equivalent mass of hydrogen and oxygen,
}even LOX and LH2. It's a matter of *density*. LH2 is not very dense at all,
}and LOX isn't a lot better. Water is a very space efficient way of storing
}them.

And, of course, it won't do what the Challenger's tanks did....
--
UUCP: {ucbvax,harvard}!cs.cmu.edu!ralf -=-=-=- Voice: [phone] (school)
ARPA: [e-mail]  BIT: ralf%cs.cmu.edu@CMUCCVMA  FIDO: Ralf Brown 1:129/46
            Disclaimer? I claimed something?
"When things start going your way, it's usually because you stopped going the
 wrong way down a one-way street."

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

Date: 8 Jul 89 00:14:17 GMT
From: zephyr!tektronix!tekgen!tekred!speed![e-mail]  (Larry Brader)
Subject: Re: Space Transportation Act

In article <[e-mail]> [e-mail] writes:
>I have just read the postings on this Act, and it looks very, very good
>to me. It does not contain direct subsidies, which other suggested acts
>have contained. Such direct subsidies are, in the long run, damaging to
>competitiveness.
Agree..

>
>As much as I would prefer that all payloads were private, I still give
>my blessing to the concept that the the government be forced to give up
>it's milspecs and such when it is requesting a parcel delivery to LEO.
>

Considering the harsh enviroment of space I'm surprise you suggest this.
What specifications do you actually require for electronics/mechanical items
in space? the moon?

Larry Brader :: [e-mail]
Tektronix nor anyone else is responsible for my views.
<<or my spelling/grammer ;-) >>

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

Date: 11 Jul 89 05:19:40 GMT
From: cs.utexas.edu!usc!csun!csusac!sactoh0![e-mail]  (Mark A. Holtz)
Subject: Lunar Landing coverage on A&E

Excuse me for asking this, but. . . .

On A&E (Arts and Entertainment), there will be a playback of the
coverage from a network news archive of the takeoff of Apollo 11,
lunar landing, and slashdown "as it happened." Can someone provide
more details, especially from when to when it is on (ET and PT
please)?

Thank you in advance.
--
*->          Mark A. Holtz           <-> AppleLink PE: Mark Holtz <-*
*->       7943 Sungarden Drive       <->      GEnie: M.HOLTZ      <-*
*->  Citrus Heights, CA 95610-3133   <->  Phone: [phone]   <-*
*-> UUCP: ...!pacbell!sactoh0!mholtz <-> RESERVED PARKING SPACE!! <-*

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

Date: 11 Jul 89 05:37:19 GMT
From: zephyr!tektronix!psueea!parsely!percival!bucket![e-mail]  (Leonard Erickson)
Subject: Re: Two Questions

[e-mail] (Greg Goebel) writes:
>   1: A recent AEROSPACE AMERICA article discussed nuclear propulsion
>      and kept referring to "specific impulse", measured in seconds?
>      Can anyone please define?

Isp = thrust/(fuel burn rate)

where thrust is in pounds and burn rate is in pounds per second.
Of course the dimensions are all screwed up, but what do you expect
in English units?
--
Leonard Erickson        ...!tektronix!reed!percival!bucket!leonard
CIS: [70465,203]
"I'm all in favor of keeping dangerous weapons out of the hands of fools.
Let's start with typewriters." -- Solomon Short

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

Date: 13 Jul 89 14:03:27 GMT
From: mfci![e-mail]  (Paul Rodman)
Subject: Re: Apollo 12 (And Surveyor 3)

In article <[e-mail]> <[e-mail]> writes:
>
> Can anyone fill me in as to what the Apollo 12 astronauts did when they
>found the SURVEYOR 3 probe on the lunar surface? I read a while back (in
>a now-forgotten magazine) that they took the probe's camera off for "a
>souvenir"...
>

As I recall they took a camera mirror off in order to study the
surface pitting, etc. on an object that had been on the surface for
quite a long time.

pkr

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

Date: 13 Jul 89 16:32:07 GMT
From: cs.utexas.edu!milano!kepler![e-mail]  (Charlie Richter)
Subject: Re: Apollo 12 (And Surveyor 3)

>  Can anyone fill me in as to what the Apollo 12 astronauts did when they
> found the SURVEYOR 3 probe on the lunar surface?

Al Bean removed three pieces of Surveyor III:  some wire cable,
some aluminum tubing, and the soil scoop.  (These three pieces
were brought back to Earth for study.)
--
Charlie Richter   MCC   Austin, Texas
  uucp: [e-mail]     arpa: [e-mail]
"The panic ... was not due to anything fundamentally weak in either business
   or finance.  It was confined to the market itself."   - WSJ, Oct. 31, 1929

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

End of SPACE Digest V9 #553
*******************