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 ; Thu, 5 Apr 90 01:40:53 -0400 (EDT) Message-ID: Reply-To: space+@Andrew.CMU.EDU From: space-request+@Andrew.CMU.EDU To: space+@Andrew.CMU.EDU Date: Thu, 5 Apr 90 01:40:18 -0400 (EDT) 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!henry@tut.cis.ohio-state.edu (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 henry@zoo.toronto.edu ------------------------------ Date: 3 Apr 90 18:32:30 GMT From: trident.arc.nasa.gov!yee@ames.arc.nasa.gov (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: ganoe@arizona.edu (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 bill@tucson.sie.arizona.edu 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!gilla@tut.cis.ohio-state.edu (Arnold G. Gill) Subject: Re: HST Image Status for 04/01/90 (Forwarded) In article <22763@netnews.upenn.edu>, hafken@eniac.seas.upenn.edu (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 : Arnold.Gill@QueensU.CA | | | INTERNET : gilla@qucdn.queensu.ca | | -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- ------------------------------ Date: 5 Apr 90 01:12:58 GMT From: eugene@eos.arc.nasa.gov (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, eugene@eos.arc.nasa.gov {uunet,mailrus,most gateways}!ames!eugene ------------------------------ Date: 4 Apr 90 15:03:22 GMT From: att!cbnewsl!clyde!feg@ucbvax.Berkeley.EDU (Forrest Gehrke,2C-119,7239,ATTBL) Subject: Re: Martian Standard Time In article <1990Mar31.041944.6922@utzoo.uucp>, henry@utzoo.uucp (Henry Spencer) writes: > In article 27000@AECLCR.BITNET (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 feg@clyde.ATT.COM ------------------------------ 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 klaes@wrksys.dec.com or - ...!decwrl!wrksys.dec.com!klaes or - klaes%wrksys.dec@decwrl.dec.com or - klaes@wrksys.enet.dec.com or - klaes%wrksys.enet.dec.com@uunet.uu.net N = R*fgfpneflfifaL ------------------------------ Date: 4 Apr 90 17:31:19 GMT From: ccncsu!pearson@boulder.colorado.edu (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 _/ \| \ pearson@handel.cs.colostate.edu \__ 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: serre@boulder.colorado.edu (SERRE GLENN) Subject: Re: Quick launches ( was: Intelsat / Titan Failure ) In article dlbres10@pc.usl.edu (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 serre@tramp.colorado.edu ------------------------------ Date: 4 Apr 90 16:22:29 GMT From: cs.utexas.edu!news-server.csri.toronto.edu!utgpu!utzoo!henry@tut.cis.ohio-state.edu (Henry Spencer) Subject: Re: KSC Tours? In article <2803@sactoh0.UUCP> mahaun@sactoh0.UUCP (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 henry@zoo.toronto.edu ------------------------------ Date: 4 Apr 90 20:34:19 GMT From: rochester!dietz@pt.cs.cmu.edu (Paul Dietz) Subject: Re: HST Image Status for 04/01/90 (Forwarded) In article <22763@netnews.upenn.edu> hafken@eniac.seas.upenn.edu.UUCP (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 dietz@cs.rochester.edu ------------------------------ Date: Wed, 04 Apr 90 12:13:00 ADT From: LANG%UNB.CA@vma.cc.cmu.edu 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: LANG@UNB.CA or SE@UNB.CA Geodetic Research Laboratory Phone: (506) 453-5142 Dept. of Surveying Engineering Telex: 014-46202 University of New Brunswick FAX: (506) 453-4943 Fredericton, N.B., Canada E3B 5A3 ======================================================================== ------------------------------ End of SPACE Digest V11 #220 *******************