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, 25 Oct 1990 01:34:15 -0400 (EDT) Message-ID: Precedence: junk Reply-To: space+@Andrew.CMU.EDU From: space-request+@Andrew.CMU.EDU To: space+@Andrew.CMU.EDU Date: Thu, 25 Oct 1990 01:33:24 -0400 (EDT) Subject: SPACE Digest V12 #483 SPACE Digest Volume 12 : Issue 483 Today's Topics: Galileo Update - 10/22/90 Re: Info wanted on Space Plane and Pegasus RANGER spacecraft Jonathan's Space Report, Oct 4 Re: Deep Lunar Dust Story? Re: (none) Re: Homebuilt Manned Rockets Re: Pioneer 11 article Re: Pioneer 11 article Re: Venus/Magellan, poles 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: 22 Oct 90 19:01:12 GMT From: usc!elroy.jpl.nasa.gov!forsight!jato!mars.jpl.nasa.gov!baalke@ucsd.edu (Ron Baalke) Subject: Galileo Update - 10/22/90 Galileo Status Report October 22, 1990 Two delta DOR (Differential One-way Ranging) navigation activities were successfully performed on Sunday, October 21, 1990. The delta DORs consisted of a North/South and East/West pass using the 70 meter antenna pair in Goldstone/Australia and Goldstone/Spain. Another delta DOR navigation activity was completed today. Data analysis is in process. The DC bus imbalance telemetry measurement dropped about 6 volts suggesting a different bus balance condition. The drop occurred during a period with no spacecraft electrical load switching or unusual mechanical motion. All other power-related measurements and spacecraft telemetry are normal. This telemetry measurement has exhibited erratic behavior since December 4, 1989. ___ _____ ___ /_ /| /____/ \ /_ /| | | | | __ \ /| | | | Ron Baalke | baalke@mars.jpl.nasa.gov ___| | | | |__) |/ | | |___ Jet Propulsion Lab | baalke@jems.jpl.nasa.gov /___| | | | ___/ | |/__ /| M/S 301-355 | |_____|/ |_|/ |_____|/ Pasadena, CA 91109 | ------------------------------ Date: 23 Oct 90 21:04:21 GMT From: hub.ucsb.edu!ucsbuxa!3001crad@ucsd.edu (Charles Frank Radley) Subject: Re: Info wanted on Space Plane and Pegasus An article about Pegasus and OSC is in the latest issue of the monthly magazine Ad Astra published by the National Space Society ------------------------------ Date: 23 Oct 90 10:57:58 GMT From: mcsun!ukc!icdoc!syma!andy@uunet.uu.net (Andy Clews) Subject: RANGER spacecraft This is a question borne of pure curiosity only. Could anyone in-the-know speculate on the state of the wreckage of the Ranger craft (the ones that hit the moon)? Would the velocity of impact likely have vapourised the craft, would they have buried deep down in a suitably mangled state or would the impact have scattered wreckage over far distances over the lunar surface? Were any craters created by the impacts ever located by terrestrial telescopes or the later lunar orbiters? Just wondered if I'd find any Ranger bits up there if I should decide to take up a new career as a lunar scrap metal dealer :-) Also I remember contact was lost with one of the Surveyor craft a couple of minutes before it was due to soft-land. I wonder if it would eventually have made a soft-ish landing of its own, and where it is likely to be. Was attitude controlled automatically or from Earth? Just curious. -- Andy Clews, Computing Service, Univ. of Sussex, Brighton BN1 9QN, England JANET: andy@syma.sussex.ac.uk BITNET: andy%syma.sussex.ac.uk@uk.ac ------------------------------ Date: 5 Oct 90 14:13:41 GMT From: frooz!cfa250!mcdowell@husc6.harvard.edu (Jonathan McDowell) Subject: Jonathan's Space Report, Oct 4 Jonathan's Space Report Oct 4 1990 (no.54) ---------------------------------------------------- The launch of STS-41/Discovery is due on Oct 6. Atlantis was slightly damaged while being remated to its external tank. This is the first time ever that there have been three fully mated Shuttle stacks at once. Gennadiy Manakov and Gennadiy Strekalov continue in orbit aboard the Mir/Kvant/Kvant-2/Kristall/Soyuz TM-10/Progress M-5 complex. The Progress M-5 automatic cargo craft was launched on Sep 27 and docked at Mir's forward port on Sep 29. The USAF's Navstar GPS 15 navigation satellite was launched from Canaveral on Oct 1 by a Delta 6925. GPS 15 is a Navstar Block IIA satellite; future launches will use the improved Block IIB satellite. A Soviet Ministry of Communications Molniya-3 comsat was launched from Plesetsk on Sep 20. A Soviet Hydrometeorological Service Meteor-2 weather satellite was launched from Plesetsk by a three-stage Tsiklon rocket on Sep 29. Ariel VI, the last of the British Ariel series of scientific satellites, reentered on Sep 23 after 11 years in space. The satellite, which operated from 1979 to 1982, was intended to study x-ray astronomy; unfortunately, it was plagued with technical problems and did not live up to the reputation of its very successful predecessor, Ariel V. A British soft x-ray experiment, the Wide Field Camera, is currently operating successfully on the German-led international ROSAT satellite. British Scientific and Technological Satellites: Satellite Launch End of Reentered Ops Ariel I 1962 1964 1976 Ariel II 1964 1967 1967 Ariel III 1967 1970 1970 Ariel IV 1971 1973 1978 Ariel V 1974 1980 1980 Ariel VI 1979 1982 1990 Prospero 1971 1981? In orbit Miranda 1974 1974 In orbit AMPTE-UKS 1984 1984 In orbit ___________________________________ |Current STS status: | |Orbiters | | | |OV-102 Columbia LC39A | |OV-103 Discovery LC39B | |OV-104 Atlantis VAB Bay 3 | | | |ML/ET/SRB stacks | | | |ML3/STS-35/ET/OV102 LC39A | |ML1/STS-38/ET/OV104 VAB Bay 3 | |ML2/STS-41/ET/OV103 LC39B | ----------------------------------- (c) 1990 Jonathan McDowell ------------------------------ Date: 22 Oct 90 13:11:14 GMT From: cs.utexas.edu!hellgate.utah.edu!dog.ee.lbl.gov!csa3.lbl.gov!jtchew@CS.YALE.EDU (JOSEPH T CHEW) Subject: Re: Deep Lunar Dust Story? Arthur C. Clarke, in his science writing, may have been a moondust skeptic as far back as the late '40s, cf. an earlier posting, but, wearing his other hat as a science-FICTION writer, he milked the idea much longer. "A Fall of Moondust" (think of it as "The Posiedon Adventure" set in a lunar valley full of guess-what) came along in the early '60s, I believe. --Joe "Just another personal opinion from the People's Republic of Berkeley" ------------------------------ Date: 22 Oct 90 17:24:08 GMT From: usc!elroy.jpl.nasa.gov!jato!mars!baalke@ucsd.edu (Ron Baalke) Subject: Re: (none) In article <16DC70F90CB1C00127@VB.CC.CMU.EDU> JW_GOODR@UNHH.BITNET writes: >Mr. Baalke; I thank you very much for your excellent periodic postings on the >Spacenet of the doings of JPL. I wonder if it is possible to receive these >updates without having to deal with the rest of the postings on the net. >I am an undergrad with a limited amount of mem-space, and I am mostly interested >in the postings concerning the spacecraft. Could you possibly send the >messages directly to me or direct me to a board that you send these posts to >that has less arguements? Thank you for your time... John Goodrich as > JW_Goodrich@unhh.bitnet >Z >X-Envelope-to: SPACE+@ANDREW.CMU.EDU ------------------------------ Date: 22 Oct 90 22:29:11 GMT From: hub.ucsb.edu!ucsbuxa!3001crad@ucsd.edu (Charles Frank Radley) Subject: Re: Homebuilt Manned Rockets Bob Truax tried to build and fly a private commercial suborbital manned rocket called the Volksrocket. He had some public hot static test firings, but basically the project seemed to run out of funding. It was to use surplus Atlas vernier motors using kerosene and LOX. The astronaut was to be in the nosecone. : ------------------------------ Date: 22 Oct 90 23:44:01 GMT From: uceng!minerva!dmocsny@iuvax.cs.indiana.edu (Daniel Mocsny) Subject: Re: Pioneer 11 article In article <1990Oct22.174849.8934@jato.jpl.nasa.gov> baalke@mars.jpl.nasa.gov (Ron Baalke) writes: >"NASA's Pioneer 11 spacecraft, the first satellite to visit >Saturn, is suffering serious communications problems three >billion miles from Earth that threaten to end its historic 17- >year mission." What is the approximate magnitude of this loss? I.e.: 1. What was the original design life of the spacecraft? 2. Since the end of their primary missions, how valuable has been the data returned by the Pioneers and Voyagers? 3. In particular, have these "used spacecraft" been instrumental in major discoveries after the ends of their primary missions? 4. As the RTG's run down and transmission distances grow, how long can NASA realistically hope to maintain useful contact with these craft? Has this length of time increased due to improvements in telemetry, signal processing, etc., that have occurred since the time of launch? 5. I know we can't predict discoveries, but would anyone care to take a stab at what we're going to lose by Pioneer 11 biting the (star)dust? 6. How come NASA let the primary contractor get away with no field service contract? ;-) I mean, I recently saw an ad from TRW service, saying they "do it all"! -- Dan Mocsny Snail: Internet: dmocsny@minerva.che.uc.edu Dept. of Chemical Engng. M.L. 171 dmocsny@uceng.uc.edu University of Cincinnati 513/751-6824 (home) 513/556-2007 (lab) Cincinnati, Ohio 45221-0171 ------------------------------ Date: 23 Oct 90 00:13:56 GMT From: van-bc!ubc-cs!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!newstop!texsun!convex!convex.convex.com!schumach@ucbvax.Berkeley.EDU (Richard A. Schumacher) Subject: Re: Pioneer 11 article If Pioneer 11 is abandoned, will that free enough money for the Magellan extended mission? ------------------------------ Date: 23 Oct 90 19:23:29 GMT From: csusac!csuchico.edu!petunia!usc!wuarchive!zaphod.mps.ohio-state.edu!uakari.primate.wisc.edu!aplcen!haven!uvaarpa!murdoch!astsun7.astro.Virginia.EDU!gsh7w@ucdavis.ucdavis.edu (Greg Hennessy) Subject: Re: Venus/Magellan, poles In article <1990Oct22.204347.7788@eagle.lerc.nasa.gov> spgreg@venus.lerc.nasa.gov writes: #Mercury is tide locked with the sun. That is one side always faces the sun. Mercury is tiday locked with the sun, but in a 2/3 resonance. Its year is 88 earth days long, while its revolution period is 59 earth days. -- -Greg Hennessy, University of Virginia USPS Mail: Astronomy Department, Charlottesville, VA 22903-2475 USA Internet: gsh7w@virginia.edu UUCP: ...!uunet!virginia!gsh7w ------------------------------ End of SPACE Digest V12 #483 *******************