Return-path: X-Andrew-Authenticated-as: 7997;andrew.cmu.edu;Ted Anderson Received: from beak.andrew.cmu.edu via trymail for +dist+/afs/andrew.cmu.edu/usr11/tm2b/space/space.dl@andrew.cmu.edu (->+dist+/afs/andrew.cmu.edu/usr11/tm2b/space/space.dl) (->ota+space.digests) ID ; Sat, 1 Dec 1990 01:37:09 -0500 (EST) Message-ID: Precedence: junk Reply-To: space+@Andrew.CMU.EDU From: space-request+@Andrew.CMU.EDU To: space+@Andrew.CMU.EDU Date: Sat, 1 Dec 1990 01:36:34 -0500 (EST) Subject: SPACE Digest V12 #598 SPACE Digest Volume 12 : Issue 598 Today's Topics: NASA element sets available for FTP Visual Observation of Galileo inflatatble station? Galileo Update - 11/28/90 Re: Translunar/interplanetary shuttle? Earth as a Cradle - quote source. Re: Translunar/interplanetary shuttle? NASA Headline News for 11/19/90 (Forwarded) Re: Apollo LightCraft and Lasers Galileo Update - 11/29/90 Administrivia: Submissions to the SPACE Digest/sci.space should be mailed to space+@andrew.cmu.edu. Other mail, esp. [un]subscription notices, should be sent to space-request+@andrew.cmu.edu, or, if urgent, to tm2b+@andrew.cmu.edu ---------------------------------------------------------------------- Date: 27 Nov 90 05:22:40 GMT From: usc!zaphod.mps.ohio-state.edu!rpi!uwm.edu!src.honeywell.com!msi.umn.edu!cs.umn.edu!uc!nachos.SSESCO.com!elmquist@ucsd.edu (Chris Elmquist) Subject: NASA element sets available for FTP My apologies if this is a double posting-- but it appeared as though this newsgroup didn't receive a copy. I have setup a directory for anonymous FTPing of TS Kelso's NASA element sets. He mails them directly to me at the same time he posts them to the various newsgroups. The machine is: nachos.ssesco.com [192.55.187.18] the directory is: nasa_elements and the filenames are of the form: nasaXXX where, 'XXX' is the element set number as released by Dr. Kelso. The current and the previous versions should always be available. Please use the format: user@host.etc.etc for the anonymous login password. We can track problems easier this way. Problems with FTPing..? Send them to: elmquist@ssesco.com -- Chris Elmquist, N0JCF Internet: elmquist@SSESCO.com AMPRN: N0JCF@WB0GDB.MN.USA.NA BellNet: (612) 785-3516 ------------------------------ Date: Wed, 28 Nov 90 08:36:12 EST From: Somers_PW <@BITNET.CC.CMU.EDU:Somers_PW@RMC.CA> Subject: Visual Observation of Galileo Galileo is fast approaching its first Earth flyby. If the Sun-Earth-Galileo geometry is right, it should be possible to observe the spacecraft. Somewhere on Earth, that geometry should be right. If Galileo is not quite bright enough to observe directly, it probably can be photographed. As the first spacecraft that mankind has sent to another planet and returned so close to the Earth, Galileo should not "pass un-noticed in the night". Unfortunately, I have been unable to obtain any info about its present orbit or near Earth trajectory. Is there anyone who could provide heliocentric orbital elements, or better still some details of its actual flyby path? SOMERS_PW@RMC.CA ------------------------------ Date: 28 Nov 90 21:26:51 GMT From: eru!hagbard!sunic!lth.se!E89DH%rigel.efd.lth.se@bloom-beacon.mit.edu (News server connection) Subject: inflatatble station? I have been following the debate about the inflatable space station, and I would like more info about it. (a short description, people & organisations involved etc...) David Hultgren E89DH@rigel.efd.lth.se ------------------------------ Date: 28 Nov 90 19:56:54 GMT From: usc!elroy.jpl.nasa.gov!jato!mars.jpl.nasa.gov!baalke@ucsd.edu (Ron Baalke) Subject: Galileo Update - 11/28/90 GALILEO STATUS REPORT November 28, 1990 The health of the Galileo spacecraft continues to be excellent. The TCM-8 (Trajectory Correction Maneuver 8) sequence memory load was successfully completed; the maneuver sequence is presently in process. Yesterday, the spacecraft successfully completed the planned SSI (Solid State Imaging) and NIMS (Near Infrared Mapping Spectrometer) photometric calibration activities. Later today, following TCM-8 execution, the spacecraft will perform a schedule turn to lead the sun. The Venus images taken by Galileo last February and played back last week, are presently being displayed on the TV monitors at JPL. ___ _____ ___ /_ /| /____/ \ /_ /| | | | | __ \ /| | | | Ron Baalke | baalke@mars.jpl.nasa.gov ___| | | | |__) |/ | | |___ Jet Propulsion Lab | baalke@jems.jpl.nasa.gov /___| | | | ___/ | |/__ /| M/S 301-355 | |_____|/ |_|/ |_____|/ Pasadena, CA 91109 | ------------------------------ Date: 29 Nov 90 10:04:46 GMT From: sdcc6!beowulf!stramm@ucsd.edu (Bernd Stramm) Subject: Re: Translunar/interplanetary shuttle? AEGQC@CUNYVM (Audra G.) writes: >The latest issue of _Analog_ has an article describing how the shuttle >could be adapted as a moon ship. Apparently if the ship either carried >two extra boosters or was refueled in orbit, it would be able to reach >and return from lunar orbit, using a LEM-like craft carried in the cargo >bay to get people to the surface of the Moon and back. Some of the "science fact" in Analog is just a tad speculative IMHO, and some engineering solutions a touch kludgy. (Not everybody with a PhD knows what they are doing.) In this particular case, refuelling would only help if the main engines were restartable, and I don't think they are (not even close, considering the considerable effort in refurbishing them for the next flight). And then you would be lugging all this mass (wings and such) out to the moon where it's not really useful. If you're going to use the shuttle at all, should it not be easier to just fuel up the 'LEM-like' craft in LEO and send it on? >If this is indeed >doable (and the article had a lot of mathematics), I would like to ask if, ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Don't let that impress you, really. If basic assumptions don't hold, the prettiest math does no good. >if still more tanks were added in orbit, the shuttle could be used to reach >further celestial bodies as well. Any thoughts? --Shangti Problems with extended stay, which it's not designed for I guess, and reentry velocity when you come back. Cheers, Bernd. ------------------------------ Date: 29 Nov 90 15:30:36 GMT From: bacchus.pa.dec.com!shlump.nac.dec.com!advax.enet.dec.com!klaes@decuac.dec.com (Larry Klaes) Subject: Earth as a Cradle - quote source. In Article 25306, burger@oldcolo.UUCP (Keith Hamburger) writes: >> "The Earth is the cradle of mankind, but man cannot live in >> the cradle forever." - Robert Heinlein I believe it was Konstantin Tsilkovsky (1857-1935), the father of Soviet rocketry and spaceflight, who first said the above, not Robert A. Heinlein. Larry Klaes klaes@advax.enet.dec.com or ...!decwrl!advax.enet.dec.com!klaes or klaes%advax.dec@decwrl.enet.dec.com or klaes%advax.enet.dec.com@uunet.uu.net "All the Universe, or nothing!" - H. G. Wells ------------------------------ Date: 29 Nov 90 18:38:49 GMT From: psuvm!eao102@psuvax1.cs.psu.edu Subject: Re: Translunar/interplanetary shuttle? Also, I don't think the shuttle is designed to handle the radiation that you would encounter that far out from the Earth. ------------------------------ Date: 29 Nov 90 21:25:58 GMT From: trident.arc.nasa.gov!yee@ames.arc.nasa.gov (Peter E. Yee) Subject: NASA Headline News for 11/19/90 (Forwarded) Headline News Internal Communications Branch (P-2) NASA Headquarters Monday, November 19, 1990 Audio Service: 202 / 755-1788 This is NASA Headline News for Monday, November 19, 1990 The conclusion of the Atlantis STS-38 mission is scheduled for 4:48 pm EST this afternoon at Edwards Air Force Base. However, the weather is a bit questionable, but conditions do not rule out landing on the first deorbit opportunity at 4:48 pm. The problem is a front is moving in, which is expected to cause some crosswind. The weather picture is expected to worsen later. The STS-38 solid rocket boosters were returned to Hangar AF this weekend, and initial inspection showed them to be in good condition. At the Kennedy Space Center, the first part of ordnance operations on Columbia was begun yesterday. Launch pad 39-B was cleared during this operation. The onboard mass memory units are being loaded with mission software today. Payload operations today include argon servicing on the Broad Band X-ray Telescope and loading of fresh film into the Ultraviolet Imaging Telescope. The two contingency space suits are scheduled to be installed in the air lock early this week. A launch date will be set for Columbia and its STS-35 Astro-1 mission at the Flight Readiness Review, Tuesday, Nov. 27, at KSC. In Orbiter Processing Facility Bay 1, Discovery's turnaround processing continues. Last Friday, five new general purpose computers were installed. STS-39, Discovery's planned February 1991, flight will be the first to use these new IBM AP- 101S computers. The upgraded GPCs provide 2.5 times the existing memory capacity and up to three times the existing processor speed with minimum impact on flight software. They are half the size, weigh approximately half as much, and require less power to operate. * * * * * * * * * * * * * * * * * * * * * * * * * * Today and tomorrow, Nov. 19 and 20, the Committee to Review the Future of the U.S. Space Program will hold meetings at George Washington University. The meetings will begin at 1:00 pm each day and will be shown live on NASA Select TV. * * * * * * * * * * * * * * * * * * * * * * * * * * Hubble Space Telescope scientists will hold a briefing on the Saturn Great White Spot (aka Wilber Spot) tomorrow, Nov. 20 at 10:00 am EST. New photographs taken by HST will also be shown. It will be shown on NASA Select TV. * * * * * * * * * * * * * * * * * * * * * * * * * * Johnson Space Center will take delivery of the second Shuttle Carrier Aircraft at Boeing Military Airplanes, Wichita, Kan., tomorrow, Nov. 20. Following delivery ceremonies in Wichita, the SCA will be flown to Ellington Field, near JSC, for a 1:30 p.m. EST ceremony. News media have been invited for the ceremony and a tour of the aircraft with flight crew members. The SCA is a modified Boeing 747-100SR aircraft. It is powered by four Pratt & Whitney JT9D-7J engines. Some features which distinguish this aircraft from a standard Boeing 747 are the struts protruding from the top of the fuselage and the two additional vertical stabilizers. The modified 747 has a range of about 1,160 miles with an orbiter atop it. Here's the broadcast schedule for Public Affairs events on NASA Select TV. All times are Eastern. **indicates a live program. Monday, 11/19/90 1:00 pm **Augustine Group meeting from George Washington University, Washington. approx. 2:45 pm **Landing coverage of Atlantis from Dryden Flight Research Facility/Edwards Air Force Base. This is for a 4:48 pm landing opportunity. Coverage will begin later for a later landing. Note: Live coverage of Augustine group which will be missed during the landing coverage will be taped and replayed following landing coverage. Tuesday, 11/20/90 10:00 am Hubble Space Telescope science briefing on Saturn Great White Spot from Goddard Space Flight Center. 1:00 pm **Augustine Group meeting from George Washington University, Washington. All events and times may change without notice. This report is filed daily, Monday through Friday, at 12:00 pm, EST. It is a service of Internal Communications Branch at NASA Headquarters. Contact: CREDMOND on NASAmail or at 202/453-8425. NASA Select TV: Satcom F2R, Transponder 13, C-Band, 72 degrees West Longitude, Audio 6.8, Frequency 3960 MHz. ------------------------------ Date: 27 Nov 90 17:34:00 GMT From: usc!cs.utexas.edu!news-server.csri.toronto.edu!utgpu!utzoo!henry@ucsd.edu (Henry Spencer) Subject: Re: Apollo LightCraft and Lasers In article <1990Nov26.205026.9303@cs.rochester.edu> dietz@cs.rochester.edu (Paul Dietz) writes: >>... You will have to build your >>own power plant, and it will be among the world's biggest. > >Henry, you know better than that. The most economical source of >electrical power to for delivery over a period of minutes is a stack >of lead-acid batteries (granted, a sizeable stack in this case)... The stack of batteries to deliver a multi-gigawatt output for several minutes is going to be, uh, impressive. >The >utility would be happy to sell you a few tens of megawatts of power to >charge your batteries so you could launch one payload per day... I don't think there is any hope that such a system would pay for itself at one payload per day. If you want to launch only a thousand kilos per day, you are much better off building a smaller launcher (which can run off more mundane power supplies) and using rockets for the crew. The big economy of a laser launcher is that it can send up a payload every few minutes; using it once a day is a huge waste of capital investment. -- "I'm not sure it's possible | Henry Spencer at U of Toronto Zoology to explain how X works." | henry@zoo.toronto.edu utzoo!henry ------------------------------ Date: 29 Nov 90 18:11:58 GMT From: julius.cs.uiuc.edu!zaphod.mps.ohio-state.edu!swrinde!elroy.jpl.nasa.gov!jato!mars.jpl.nasa.gov!baalke@apple.com (Ron Baalke) Subject: Galileo Update - 11/29/90 GALILEO STATUS REPORT November 29, 1990 Yesterday, the Galileo spacecraft successfully completed the TCM-8 (Trajectory Correction Maneuver 8) , imparting the required delta velocity just over 5 cm/sec. Also yesterday, subsequent to the maneuver, the spacecraft completed a 6 degree turn to lead the sun by 9 degrees. Today, selected remote sensing science will perform continued planned calibration activities including boresight and star calibrations. ___ _____ ___ /_ /| /____/ \ /_ /| | | | | __ \ /| | | | Ron Baalke | baalke@mars.jpl.nasa.gov ___| | | | |__) |/ | | |___ Jet Propulsion Lab | baalke@jems.jpl.nasa.gov /___| | | | ___/ | |/__ /| M/S 301-355 | |_____|/ |_|/ |_____|/ Pasadena, CA 91109 | ------------------------------ End of SPACE Digest V12 #598 *******************