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 ; Wed, 14 Mar 90 01:49:07 -0500 (EST) Message-ID: <8ZzSZ4200VcJA20k4q@andrew.cmu.edu> Reply-To: space+@Andrew.CMU.EDU From: space-request+@Andrew.CMU.EDU To: space+@Andrew.CMU.EDU Date: Wed, 14 Mar 90 01:48:37 -0500 (EST) Subject: SPACE Digest V11 #143 SPACE Digest Volume 11 : Issue 143 Today's Topics: Re: NASA Headline News for 03/07/90 and 03/08/90 Re: SPACE Digest V11 #139 Re: Keplarian Elements Wanted ! Sci. Am. Lunar Telescope Article Re: Challenger last words * SpaceNews 12-Mar-90 * Re: SR-71 Record Flight Information Re: `Blackbird' spy plane retires with record flight Re: Solar System Questions from a Novice Re: Challenger last words Re: NASA SR-71's ---------------------------------------------------------------------- Date: Mon, 12 Mar 90 11:14:21 CST From: lfa@vielle.cray.com (Lou Adornato) Subject: Re: NASA Headline News for 03/07/90 and 03/08/90 03/08/90... >Workers are closing off a high pressure leak, residual liquid >oxygen and liquid hydrogen reactants are being offloaded and... I'm surprised that these aren't vented out between the deorbit burn and re-entry. I'd certainly feel a lot better knowing that there wheren't several (hundred?) Kg of either of these on board during re-entry and landing, especially if they weren't needed. 03/07/90... > Access to the orbiter main engine compartment revealed >a two gallon hydraulic system leak from a one-inch split in an >outlet hose in auxiliary power unit one. Officials are >determining whether the line needs to be replaced. So what's the alternative, Mach 3 tape? Or do we just have the crew top off the hydraulic system every 30,000 km? Lou Adornato | Statements herein do not represent the opinions or attitudes Cray Research | of Cray Research, Inc. or its subsidiaries. lfa@cray.com | (...yet) ------------------------------ Date: Mon, 12 Mar 1990 15:38-EST From: Dale.Amon@H.GP.CS.CMU.EDU Subject: Re: SPACE Digest V11 #139 > radius. You'd probably get very, very sick if your head projected into or > beyond the axis of rotation. I think you may be wrong. Look into Peter Diamandis's work on use of a rotating bed to put stress on heart during sleep in 0g. Also, I'm giving my first talk in Ireland tomorrow (3/12/90) so if anyone happens to be in the vicinity of University College Galway at around 7:30pm... Contact is Joe Desbonnet, sometimes reader of the digest. My usual subject matter, of course: The Private Road to Space (ie who needs governments?) Space and a pub crawl for Guinness and Irish music afterwards. Who could ask for more? Bye now! ------------------------------ Date: 12 Mar 90 09:05:03 GMT From: zaphod.mps.ohio-state.edu!brutus.cs.uiuc.edu!jarthur!petunia!polyslo!mhuang@tut.cis.ohio-state.edu ( * * * Hunter * * * ) Subject: Re: Keplarian Elements Wanted ! In article <2350@milton.acs.washington.edu> swanie@milton.acs.washington.edu (Eric Swansen) writes: >Is there anyone (or anyplace) that can provide we with recent Keplarian >Elements for satellites ? > >I've recently found this neat program that tracks satellites, but I need >to add in the data for the "birds" that I'd like to monitor... >In particular Salyut 7, MIR, Space Shuttle (updated 2x daily+/-) and >perhaps other birds more visible from Earth.... >Ideally I'd like to TELNET or FTP to a site, but that is probably asking too >much...... >Any Suggestions ? Well, USAF prediction bulletins are posted on sci.space once every two weeks, so you could get that sort of information from there. #=============================================================================# |\_/| mhuang@polyslo.CalPoly.EDU "PROGRAM: tr.v. To engage in a pastime {O o} mhuang@FubarSys.SLO.CA.US similar to banging ones' head against a ( " ) * Ack! Ack! Pfft! Ack! * wall, except with fewer chances for reward." U (Bill the Cat wants to fly.) Admiral Michael "Hunter" Huang +---<<< * * * S T A R T R E K * * * >>>---+ USS Ticonderoga, NCC-1736 +--<<< * * * * L I V E S ! ! ! * * * * >>>--+ #=============================================================================# ------------------------------ Date: 12 Mar 90 19:50:46 GMT From: zaphod.mps.ohio-state.edu!swrinde!cs.utexas.edu!jarvis.csri.toronto.edu!utgpu!watserv1!watdragon!watyew!jdnicoll@tut.cis.ohio-state.edu (Brian or James) Subject: Sci. Am. Lunar Telescope Article The interesting thing about the article was the artwork. A nice array of telescopes deployed without disturbing the lunar soil. The litle moon buggy they show *is* leaving tracks, so either the 'scopes were placed from above (an unseen boom attachment for the buggy?) or the people doing the initial placement were nice enough to return the site to its original boot-print and tire-trackless condition. James Nicoll PS: Smilies for those that need them, of course. ------------------------------ Date: 12 Mar 90 21:16:27 GMT From: uc!nic.MR.NET!ns!logajan@tut.cis.ohio-state.edu (John Logajan) Subject: Re: Challenger last words >In article <3271@viper.Lynx.MN.Org> dave@viper.Lynx.MN.Org (David Messer) > writes: >>Yes, the last words recorded were: "No, I wanted a BUD Light!" :-) > >You are quite a jerk, aren't you ? > >John Coughlin Net: JC@RMC.BITNET Vox: 613-541-6439 Fax: 613-547-3053 I think it IS funny. David didn't say he held ill will toward the poor victims of Challenger -- and there is no reason to assume otherwise. I'd laugh at my own death -- but I haven't figured out a way to do that yet. :-) -- - John Logajan @ Network Systems; 7600 Boone Ave; Brooklyn Park, MN 55428 - logajan@ns.network.com, john@logajan.mn.org, 612-424-4888, Fax 424-2853 ------------------------------ Date: 10 Mar 90 16:36:54 GMT From: pacbell!hoptoad!peora!tsdiag!ka2qhd!kd2bd@ames.arc.nasa.gov (John Magliacane) Subject: * SpaceNews 12-Mar-90 * Bulletin ID: SPC0312 ========= SpaceNews ========= MONDAY MARCH 12, 1990 SpaceNews originates at KD2BD in Wall Township, NJ, and is distributed weekly around the world on UseNet and Amateur Packet Radio. It is available for UNLIMITED worldwide distribution. * STS-31 NEWS * =============== A series of background briefings on the Hubble Space Telescope, the deployment mission, secondary payloads and the astronaut pre-flight press conference for Space Shuttle mission STS-31, now set for launch on April 12, will be held March 15 and 16 at the NASA Goddard Space Flight Center, Greenbelt, Md., and March 19 and 20 at the NASA Johnson Space Center, Houston. Briefings will be carried live on NASA Select television, available on Satcom F2R, transponder 13 at 3960 MHz. Two-way question and answer capability will be available at other NASA centers and at Headquarters. During the mission, media wishing to focus attention on the Hubble Space Telescope activities are advised to contact Goddard Public Affairs, 301/286-5565, to arrange for accreditation at the Goddard News Center. Goddard will operate a 24-hour-a-day newsroom during the mission and will have telescope scientists and managers available for briefings and interviews. [From: Peter E. Yee @ NASA Ames Research Center, Moffett Field, CA] * UOSAT NEWS * ============== UO-14 continues to run the FORTH DIARY on the 1802 OBC, using Data formats distributed just after launch. The development, publication and implementation of downlink data formats for OSCARs is a delicate business, especially early in a mission. We do not want to publish data formats if they are likely to change quickly, lest people waste their time implementing software which will later become useless. On the other hand, if we do not publish formats, you cannot listen to the satellites - and that's what they're there for! In the next month, we will be changing operating regimes on UO-14, as the PACSAT Communications Experiment is brought on line. Once this happens, asynchronous data formats (as used by the DIARY) will give way to synchronous, AX.25 packet formats. As soon as possible, the PACSAT Communications Experiment on UO-14, and the BBS systems on PACSAT-OSCAR-16 and LUSAT-OSCAR-19 will be brought on line for general use. All three of these satellites will be running the same software, using the same protocols - developed jointly by UoSAT and AMSAT-NA. NK6K and G0/K8KA have already published a standard for a broadcast (e.g. bulletins and whole-orbit-data protocol. A final specification should be distributed soon, and early transmissions from the UO-15 PCE will use this protocol. Specification of the message-transfer protocol is well under way. Thus, the stable state, which we expect to reach sometime this spring, is that UO-14, PO-16 and LO-19 bulletin boards will be accessible with the same groundstation protocol software. Broadcasts from these satellites (e.g. bulletins and whole-orbit data will also come down in a single standard data format. Until we change this state, groundstation software developers are advised to make their programs modular and be ready to revise! Downlink Modulation: UO-15 is capable of transmitting either 1200 bits/second AFSK (as used on all previous UoSATs and currently transmited by UO-15), or 9600 bits/second FSK. Ultimately, the PACSAT Communications Experiment on UO-15 will support only 9600 bps FSK. During the transition from DIARY operations to PCE operations, however, we will also be transmitting AX.25 packets at 1200 bits/second AFSK. Like DOVE, this should be copyable with a standard, unmodified, TNC. [From G0/K8KA via OSCAR-11] * FEEDBACK WELCOMED * ===================== Feedback regarding SpaceNews can be directed to the editor (John) via any of the following paths: UUCP : ucbvax!rutgers!petsd!tsdiag!ka2qhd!kd2bd PACKET : KD2BD @ NN2Z.NJ.USA.NA MAIL : John A. Magliacane Department of Electronics Technology Brookdale Community College Newman Springs Road Lincroft, New Jersey 07738 U.S.A. <<< Stay on course......Say YES to Morse! >>> -- AMPR : KD2BD @ NN2Z (Neptune, NJ) UUCP : ucbvax!rutgers!petsd!tsdiag!ka2qhd!kd2bd "For every problem, there is one solution which is simple, neat and wrong." -- H.L. Mencken ------------------------------ Date: 12 Mar 90 21:13:59 GMT From: lowerre@apple.com (Bruce Lowerre) Subject: Re: SR-71 Record Flight Information In article <5712@ur-cc.UUCP>, pkap_ltd@uhura.cc.rochester.edu (Peter Kapner) writes: > Interesting notion. What does everyone think? *Is* there a mach 4 bird > hidden deep in some hanger just waiting to come out and reconnoiter at > 100,000 feet? Better than that. The replacement is the space shuttle. The SR-71 was developed to replace the U-2. The U-2 became obsolete when the Russians developed a cannon ball that could be blasted high enough to shoot it down. The SR-71 became obsolete when satellites were developed with telescopic cameras good enough to photograph the license plate of a car. As for mach 4 at 100,000 feet, the dream of hypersonic flight with scramjet engines is being researched. ------------------------------ Date: 10 Mar 90 15:08:13 GMT From: ispi!jbayer@uunet.uu.net (Jonathan Bayer) Subject: Re: `Blackbird' spy plane retires with record flight jwm@stdc.jhuapl.edu (Jim Meritt) writes: > CHANTILLY, Va. (UPI) -- The Air Force's SR-71 reconnaissance plane, >popularly known as the Blackbird, retired with style Tuesday on a >record-shattering one-hour flight from the West Coast to the East Coast. [deleted] >record-breaking flight of just over an hour. >.................................. >One hour?!?!!? Yes, it was just over 68 minutes. Look in one of the aviation groups for more info. It had an average speed of about 2112 MPH. JB -- Jonathan Bayer Intelligent Software Products, Inc. (201) 245-5922 500 Oakwood Ave. jbayer@ispi.COM Roselle Park, NJ 07204 ------------------------------ Date: 12 Mar 90 03:13:33 GMT From: psuvm!mxp122@psuvax1.cs.psu.edu (Zaphod Beeblebrox) Subject: Re: Solar System Questions from a Novice In article <1990Mar11.192922.16689@helios.physics.utoronto.ca>, neufeld@physics.utoronto.ca (Christopher Neufeld) says: > >In article <7569@hacgate.scg.hac.com> lori@hacgate.scg.hac.com (Lori + 8/9) >writes: >>Are there dual-sun solar systems? This poster didn't seem to >>think so (but hey, it's pretty old). If there are, how do the suns >>revolve around each other? Would the bigger sun tend to draw the >>smaller one toward it? >> > There are binary stars, but the presence of solar systems other than our >own has not been demonstrated. A planet could orbit one of two suns, or >their centroid if they were very close together (orbiting them both). The >suns would revolve around each other the same way that the Moon and Earth >revolve around each other. The bigger sun would draw the smaller one toward >it, but only enough to maintain the orbit (if it didn't draw the smaller >one toward it, the two suns would go their separate ways). The smaller sun >would also draw the bigger sun toward it (action-reaction). The suns would >not spiral in and collide in a small number of billions of years. > Last I heard, a planet could not do a figure-eight around two suns, >because such an orbit would be unstable. Maybe somebody else has more >recent information on this, though. Hmmm. . .I remember hearing it's more likely that the 2nd sun revolves just like a planet around the 'main' star just as if our Jupiter did the big firework. . . any info? MXP122 at psuvm.psu.edu ------------------------------ Date: Mon, 12 Mar 90 09:16:55 EST From: JC%RMC.BITNET@vma.cc.cmu.edu Subject: Re: Challenger last words In article <3271@viper.Lynx.MN.Org> dave@viper.Lynx.MN.Org (David Messer) writes: >Yes, the last words recorded were: "No, I wanted a BUD Light!" :-) You are quite a jerk, aren't you ? John Coughlin Net: JC@RMC.BITNET Vox: 613-541-6439 Fax: 613-547-3053 ------------------------------ Date: 12 Mar 90 22:00:32 GMT From: orc!inews!iwarp.intel.com!omepd!omews10.intel.com!larry@decwrl.dec.com (Larry Smith) Subject: Re: NASA SR-71's Henry Spencer writes: >Don't forget why launching the D-21 from the Blackbird was abandoned: >an early launch failed disastrously and both drone and launch aircraft >were lost. Even disregarding other problems, I think NASA would react, >um, *negatively* to the prospect of losing one of their SR-71s... In Kelly Johnson's book, I believe he stated that because of his close friendship with the M-12 LCO, and the loss of this gentleman during the July, 1966 launch attempt, he asked the Air Force to scuttle the D-21A project. The Air Force agreed and the D-21B project started as a result. Kelly also wrote that his engineering team thought that they could make the high Mach M-12/D-21 launch idea work. But the project was cancelled anyway. I never have been satisfied with this as the real reason for the killing of the D-21A project, but as everything associated with the Skunk Works, sometimes the fog evaporates over time. I think we would have to see the real reason for the accident back in 1966. By the way, the Germans, with the Saenger spaceplane, intend to do a similar thing. The plan is to launch the rocket powered Cargus (cargo payload) or Horus (passenger payload) from the back of the Turboramjet or Fanramjet powered Saenger, only at Mach 6.8. There has been mention of having the NASA SR-71s do high altitude atmospheric research for NASP. There has also been mention of using Pegasus for some NASP research as well. Larry Smith ------------------------------ End of SPACE Digest V11 #143 *******************