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 ; Tue, 8 Jan 1991 02:13:08 -0500 (EST) Message-ID: <4bWL3Wa00VcJMB3k4G@andrew.cmu.edu> Precedence: junk Reply-To: space+@Andrew.CMU.EDU From: space-request+@Andrew.CMU.EDU To: space+@Andrew.CMU.EDU Date: Tue, 8 Jan 1991 02:12:36 -0500 (EST) Subject: SPACE Digest V13 #023 SPACE Digest Volume 13 : Issue 23 Today's Topics: Re: Interstellar travel Launch of Navstar GPS II-10 and Shutdown of I-6 Energia derivative Re: You can help clear cloud over MIR SWEERSTAKES. Magellan Status for 01/02/91 (Forwarded) Re: Space News from Flight Int. for Dec90 Administrivia: Submissions to the SPACE Digest/sci.space should be mailed to space+@andrew.cmu.edu. Other mail, esp. [un]subscription requests, should be sent to space-request+@andrew.cmu.edu, or, if urgent, to tm2b+@andrew.cmu.edu ---------------------------------------------------------------------- Date: 2 Jan 91 18:28:22 GMT From: usc!samsung!rex!rouge!dlbres10@ucsd.edu (Fraering Philip) Subject: Re: Interstellar travel In article <3033@mentor.cc.purdue.edu> f3w@mentor.cc.purdue.edu (Mark Gellis) writes: >Three useful sources for interstellar spacecraft designs are Dean Ing's THE >FUTURE OF FLIGHT (actually, he wrote it with someone else, but I cannot find >my copy and I don't remember the name, sorry), Robert Forward's FUTURE MAGIC >(interesting book, dumb title), and Charles Sheffield's article "Fly Me to >the Stars" in the Fall, 1989 issue of NEW DESTINIES. I think the other author is Leik Myrabo (sp?). Phil ------------------------------ Date: Wed, 02 Jan 91 17:02:25 AST From: LANG%unb.ca@unb.ca(Richard@UNBMVS1.csd.unb.ca Langley) Subject: Launch of Navstar GPS II-10 and Shutdown of I-6 The 10th Navstar GPS Block II satellite, PRN 23, was launched on 26 November 1990 into the E-plane, and was made available on 10 December. Satellite I-6,PRN 9, has been set unusable since 11 December 1990. The updated Navstar GPS Constellation Status table given below reflects these events. Navstar GPS Constellation Status (91-01-02) Blk NASA Orbit II PRN Internat. Catalog Plane Launch Seq SVN Code ID Number Pos'n Date Clock Comment -------------------------------------------------------------------------------- Block I 1 4 1978-020A 10684 78-02-22 Not usable since 85-07 2 7 1978-047A 10893 78-05-13 Not usable since 85-09 3 6 1978-093A 11054 A-3 78-10-06 Rb 4 8 1978-112A 11141 78-12-10 L-band signals turned off 89-10-14 5 5 1980-011A 11690 80-02-09 Not usable since 84-05 6 9 1980-032A 11783 A-2 80-04-26 Rb Operating on 2nd Rb clock; set unusable 90-12-11 7 81-12-18 Launch failure 8 11 1983-072A 14189 C-3 83-07-14 Cs 9 13 1984-059A 15039 C-1 84-06-13 Cs 10 12 1984-097A 15271 A-1 84-09-08 Cs 11 3 1985-093A 16129 C-4 85-10-09 Rb operating on Rb clock without temp. control Block II II-1 14 14 1989-013A 19802 E-1 89-02-14 Cs Became available 89-04-15 II-2 13 2 1989-044A 20061 B-3 89-06-10 Cs Became available 89-08-10 II-3 16 16 1989-064A 20185 E-3 89-08-18 Rb Became available 89-10-14 II-4 19 19 1989-085A 20302 A-4 89-10-21 Cs Became available 89-11-23 II-5 17 17 1989-097A 20361 D-3 89-12-11 Cs L-band signals enabled 90-01-06 II-6 18 18 1990-008A 20452 F-3 90-01-24 Cs Became available 90-02-14 22:26 UT II-7 20 20 1990-025A 20533 B-2 90-03-26 Cs Became available 90-04-18 23:13 UT II-8 21 21 1990-068A 20724 E-2 90-08-02 Cs Became available 90-08-22 15:00 UT II-9 15 15 1990-088A 20830 D-2 90-10-01 Cs Became available 90-10-15 00:39 UT II-10 23 23 1990-103A 20959 E-4 90-11-26 Cs Became available 90-12-10 23:45 UT Notes 1. NASA Catalog Number is also known as NORAD or U.S. Space Command object number. 2. No orbital plane position = satellite no longer operational. 3. Clock: Rb = Rubidium; Cs = Cesium 4. PRN 16 is scheduled to switch to a Cs clock early in 1991. ================================================================================ 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 ================================================================================ ------------------------------ Date: 2 Jan 91 13:33:06 GMT From: world!ksr!clj%ksr.com@uunet.uu.net (Chris Jones) Subject: Energia derivative Chris Jones clj@ksr.com {world,uunet,harvard}!ksr!clj ------------------------------ Date: 3 Jan 91 18:14:49 GMT From: agate!shelby!neon!news@ucbvax.Berkeley.EDU (Andy Freeman) Subject: Re: You can help clear cloud over MIR SWEERSTAKES. In article <15500@ogicse.ogi.edu> borasky@ogicse.ogi.edu (M. Edward Borasky) writes: >If they sell $2M in tickets, they will LOSE $8M. But what happens in >this case? Does the winner still get his ride? More importantly, >if in this case NO ONE gets his ride, will the people who bought tick- >ets get their money back? That's one of the chances I'm willing to take. I might die before the contest ends, but I don't expect the promoters to do anything about that either. >And do the promoters have insurance to cover the lawsuit your loved >ones will bring if you are the "winner" and are killed or injured? Frankly, I don't care. If MY loved ones want to protect their interests, that's our problem. I am willing to take whatever measures there are to indemify the promoters if that increases my chances. If you're not willing to do likewise, you're more expensive to send up and should pay more/have less chance of going and that's your problem. In short, butt out. >Dammit, this deal STINKS! If someone wants to promote a scam, fine, >but DON'T do it in "sci.space" and DON'T ask the readers of "sci.space" >to make phone calls SUPPORTING the scam. I'm still waiting for evidence that it actually stinks. Sure, they may not get enough calls. (What was that number again?) But, they may. The only way to know for sure is to wait and see, which is rather late. A good guess would be based on market research. >I'm not trying to protect you. You are free to throw your money down >any rathole you wish to. But you are NOT free to ask others to do so; >that constitutes FRAUD and is punishable by law. I'm trying to warn >those others that this is a scam. Before I said anything, I was one of those "others" who must be protected. BTW - If turns out not to be a scam, I'm sure that Borasky will compensate the promoters for the damage done by his accusations. If his bad publicity scuttles the idea, I'm sure that he'll compensate the rest of us. Surely he doesn't think that his whining has no effect. Therefore, it is reasonable to hold him responsible for that effect. What, he isn't willing to be responsible for his actions? -andy ps - Send money to my rathole. -- UUCP: {arpa gateways, sun, decwrl, uunet, rutgers}!neon.stanford.edu!andy ARPA: andy@neon.stanford.edu BELLNET: (415) 723-3088 ------------------------------ Date: 2 Jan 91 22:06:38 GMT From: trident.arc.nasa.gov!yee@ames.arc.nasa.gov (Peter E. Yee) Subject: Magellan Status for 01/02/91 (Forwarded) MAGELLAN STATUS REPORT January 2, 1991 The Magellan spacecraft continues to perform normally. All star calibrations and momentum wheel desaturations during the holiday weekend were successful with only small attitude corrections. All of the commands sent to the spacecraft during the holidays were performed without incident. A new command sequence will be uplinked Friday, January 4. It will be a normal weekly mapping command sequence. The single tape-recorder strategy which was implemented just before Christmas has been performing as expected. The project shut off tape recorder A because each of its four tracks was returning corrupted radar data. With just one tape recorder, each image swath now has three small gaps in it. The gaps occur when the recorder switches from one track to another. A few bad frames still occur with the B-side recorder but the cause is not known. A project spokesman said, however, that the rate of bad image frames has dropped and the amount of usable data has increased significantly with the new strategy. Magellan this morning completed its 694th mapping orbit of Venus and data from about 677 orbits has been successfully received on Earth. The project is currently assessing the number of mapping orbits that were adversely affected by the tape recorder problem to determine how many can be recovered by reprocessing. ------------------------------ Date: 3 Jan 91 02:13:25 GMT From: usc!cs.utexas.edu!sun-barr!newstop!exodus!norge.Eng.Sun.COM!jmck@ucsd.edu (John McKernan) Subject: Re: Space News from Flight Int. for Dec90 sjeyasin@axion.bt.co.uk (swaraj jeyasingh) writes: >The Oct 4 Zenit launch failure destroyed Launch pad one. That explosion has >been attributed to Zenits RD-170 first stage engine. It is regarded as >random and not a sufficient reason to stop launches for a lengthy >investigation. This is an interesting claim for the Russians to make, assuming Flight International quoted them correctly. "Don't worry about the launcher's explosion, it was just a random occurrence, the launcher is fine." They obviously do things a little differently in the USSR. John L. McKernan. jmck@sun.com Disclaimer: These are my opinions but, shockingly enough, not necessarily Sun's ------------------------------------------------------------------------------- ------------------------------ End of SPACE Digest V13 #023 *******************