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, 22 Feb 90 01:25:08 -0500 (EST) Message-ID: Reply-To: space+@Andrew.CMU.EDU From: space-request+@Andrew.CMU.EDU To: space+@Andrew.CMU.EDU Date: Thu, 22 Feb 90 01:24:46 -0500 (EST) Subject: SPACE Digest V11 #70 SPACE Digest Volume 11 : Issue 70 Today's Topics: Re: Galileo Update - 02/12/90 Re: Spacecraft on Venus Re: Galileo Update - 02/12/90 Payload Status for 02/20/90 (Forwarded) Galileo information from Science News Re: Giotto is back ---------------------------------------------------------------------- Date: 19 Feb 90 21:24:54 GMT From: island!robert@uunet.uu.net (Robert Leyland) Subject: Re: Galileo Update - 02/12/90 In article <2617@hudson.acc.virginia.edu> gsh7w@astsun.astro.Virginia.EDU (Greg S. Hennessy) writes: >In article <20916@watdragon.waterloo.edu> >sekoppenhoef@rose.waterloo.edu (Shawn E. Koppenhoefer) writes: > >#Is there any way to get access to the RAW data or are we stuck > >Nasa distributes CD-ROM disks with the RAW images, and the software >to process the data. The CD-ROMS are sold basically at cost. > >-Greg Hennessy, University of Virginia Ok, ok, now who/where do we contact to get these CD-ROMs. I have a CD-ROM drive, and the Meridien Data GRIPS CD, which has some (a selection) of neat images, but I would love to "play" with more. In my work I do a lot of image processing software, and currently some image generation stuff, and its nice to have real examples to compare against. thanks, robert... -- Robert Leyland - Island Graphics, 4000 Civic Ctr Dr #400, San Rafael, CA 94903 {uunet|sun}!island!robert - (415) 491-1000 - GEnie: r.leyland - std disclaimers ------------------------------ Date: 21 Feb 90 21:49:41 GMT From: zaphod.mps.ohio-state.edu!uwm.edu!ogicse!unicorn!n8741572@tut.cis.ohio-state.edu (Matthew Skinner) Subject: Re: Spacecraft on Venus In article <1990Feb21.164544.9750@utzoo.uucp> henry@utzoo.uucp (Henry Spencer) writes: >In article <9002201802.AA21037@decwrl.dec.com> klaes@wrksys.enet.dec.com (N = R*fgfpneflfifaL 20-Feb-1990 1302) writes: >> What would it take - in terms of alloys, etc. - for a manned >> spacecraft to survive on the planet Venus? ... > >The chemical problems are manageable. The real problem is not alloys, >but building the most ferociously capable heat-pump system you ever saw, >to pump heat out faster than it can leak in. Not impossible, but a major >engineering challenge. A slight variation, but still dealing with getting rid of enormous heat loads, in a fictional story, David Brin's _Sundiver_ uses a heat pump to drive a laser since that is the energy level needed to exhaust heat close to the sun. He called it a "Refrigerator Laser", but it seems you would need a good sized nuclear power plant to drive the heat pump for any length of time. Everything (pressure vessel, ceramic anti-corrosive coating, nuclear reactor, laser) adds up to landing something the size and mass of a nuclear submarine on Venus. ...anybody for pulling the Triton out of mothballs? :-) -- Matthew Skinner skinner@ [ nessie | unicorn ].wwu.edu ------------------------------ Date: 21 Feb 90 18:30:12 GMT From: zaphod.mps.ohio-state.edu!samsung!aplcen!haven!uvaarpa!hudson!astsun.astro.Virginia.EDU!gsh7w@tut.cis.ohio-state.edu (Greg S. Hennessy) Subject: Re: Galileo Update - 02/12/90 In article <1397@island.uu.net> robert@island.uu.net (Robert Leyland) writes: #Ok, ok, now who/where do we contact to get these CD-ROMs. #I have a CD-ROM drive, and the Meridien Data GRIPS CD, which has some #(a selection) of neat images, but I would love to "play" with more. In my #work I do a lot of image processing software, and currently some image #generation stuff, and its nice to have real examples to compare against. I get my stuff from Astronomy Data Center NASA NSSDC GSFC 633 Greenbelt MD 20771 I hope this helps. -Greg Hennessy, University of Virginia USPS Mail: Astronomy Department, Charlottesville, VA 22903-2475 USA Internet: gsh7w@virginia.edu UUCP: ...!uunet!virginia!gsh7w ------------------------------ Date: 21 Feb 90 16:32:39 GMT From: trident.arc.nasa.gov!yee@ames.arc.nasa.gov (Peter E. Yee) Subject: Payload Status for 02/20/90 (Forwarded) Daily Status/KSC Payload Management and Operations 02-20-90 - STS-31R HST (at VPF) - VPF closeout activities were worked yesterday including bays 7 and 10 closeout. Closeouts will continue today with MLI and velcro installations. - STS-32R SYNCOM/LDEF (at SAEF-2) LDEF deintegration continues. - STS-35 ASTRO-1/BBXRT (at O&C) - CITE closeout activities were worked yesterday and will continue today along with BBXRT T-O checks. - STS-40 SLS-1 (at O&C) - The systems test was started yesterday and will continue today. Experiment functional checks will also continue today. - STS-42 IML (at O&C) - Racks 3, 9, and 11 staging activities will continue today. - STS-45 Atlas-1 (at O&C) - Pallet 2 connector bracket installation along with pallet 2 and 3 hard point installations will be worked today. - STS-46 TSS-1 (at O&C) - PPCU checkout will continue today. ------------------------------ Date: Wed, 21 Feb 90 18:31:02 -0500 (EST) From: "Todd L. Masco" To: Outbound News , Space Subject: Galileo information from Science News (Reprinted from Science News, Feb. 17, 1990, p.103, w/ out permission) Venus: Galileo's first planetary flyby ------------------------------------- As the spacecraft Galileo swung past Venus last week, getting a gravitational boost in speed on its way to a 1995 rendezvous with Jupiter, NASA officials expected the craft's camera shutter to click 16 times. The number had reached 56 when data showed the shutter still clicking, and it had progressed to 468 by the time commands sent by ground controllers and by Galileo's own computer stopped it. Engineers controlling the mission from NASA's Jet Propulsion Laboratory in Pasadena, Calif., were relieved to discover that the problem resulted from a correctable software mistake rather than a malfunction in the camera itself or an incoming solar proton disrupting Galileo's computer memory. About 65 more photos remained on the week's shooting schedule at Venus, since the shutter is designed to operate 150,000 times. Most of Galileo's scientific data will not reach Earth until the craft's tape recorder can play them back in October (when the proper antenna onboard deploys). But some results have reached Earth already, including three of the photos and a batch of near-infrared mapping data. Galileo's two ultraviolet spectrometers have shown, as expected, that hydrogen atoms at Earth's distance from the sun last about 1 million second (almost 12 days) before ionizing, says Charles W. Hord of the University of Colorado in Boulder, and that a cubic centimeter of space contains an average of about 1 interstellar hydrogen atom. Because Galileo follows a flight path that will let its ultraviolet instruments observe from both inside and outside Earth's orbit, scientists will have a unique chance to investigate the controversial theory that numerous small comets are being vaporized by running into Earth's atmosphere. If the theory is correct, more hydrogen should appear in data from Galileo's present "inside" position - looking through the presumed vaporized comets - then will show up after the craft has crossed Earth's orbit. Galileo is already reporting on the ultraviolet spectra of stars (the one measured so far is Kappa Velorum, says Hord) and on impacts by space dust. The largest piece yet detected weighed about one hundred-millionth of a gram and measured about 26 microns across. -- Article written by J. Eberhart -- | Todd L. Masco | Quantum Mechanics: The dreams stuff is made of. | tm2b@andrew.cmu.edu | ( ...!harvard!andrew.cmu.edu!tm2b ) ------------------------------ Date: 21 Feb 90 13:29:36 GMT From: cs.utexas.edu!samsung!umich!sharkey!amara!khai@tut.cis.ohio-state.edu (S. Khai Mong) Subject: Re: Giotto is back In article <9002200812.AA07884@angband.s1.gov> ESC1325@ESOC.BITNET writes: > The Giotto spacecraft had been put into "hibernation" shortly after > the Halley encounter. This means the spacecraft is in a attitude with its > spin axis perpendicular to the obital plane. Why is that the most logical attitude when it is put into hibernation? -- Sao Khai Mong: Applied Dynamics, 3800 Stone School Road, Ann Arbor, Mi48108 (313)973-1300 (uunet|sharkey)!amara!khai khai%amara.uucp@mailgw.cc.umich.edu ------------------------------ End of SPACE Digest V11 #70 *******************