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 May 90 02:27:13 -0400 (EDT) Message-ID: Reply-To: space+@Andrew.CMU.EDU From: space-request+@Andrew.CMU.EDU To: space+@Andrew.CMU.EDU Date: Tue, 8 May 90 02:23:51 -0400 (EDT) Subject: SPACE Digest V11 #373 SPACE Digest Volume 11 : Issue 373 Today's Topics: NASA Headline News for 05/07/90 (Forwarded) Magellan Update - 05/07/90 Re: Manned mission to Venus Re: Manned mission to Venus News From OSCAR-11 03-May-90 ---------------------------------------------------------------------- Date: 7 May 90 21:30:49 GMT From: trident.arc.nasa.gov!yee@ames.arc.nasa.gov (Peter E. Yee) Subject: NASA Headline News for 05/07/90 (Forwarded) ----------------------------------------------------------------- Monday, May 7, 1990 Audio Service: 202/755-1788 ----------------------------------------------------------------- This is NASA Headline News for Monday, May 7... The orbiter Discovery returns to Kennedy Space Center today following a weather delayed cross-country flight from Dryden Flight Research Facility. The southwestern United States was hit with severe rainstorms again over the weekend. Stops were required in Texas and Georgia. The Shuttle Carrier Aircraft with the Discovery aboard can only fly in clear rainless weather during a cross country flight. ******** Three of the ten Arthur S. Flemming Award recipients this year are NASA employees. Susan Louise Cloud from Marshall Space Flight Center and Alan Lew from NASA Headquarters received Administrative awards and James Gooding, also from Headquarters, received an award from the Scientific category. Recognition to outstanding government employees is to encourage outstanding work and enhance appreciation of the opportunites and the responsibilities it represents. ******** This is Public Service Recognition Week. Across the United States civil servants are being honored this week in a wide range of ceremonies and special functions. President Bush last week saluted federal employees and expressed his personal appreciation for the many services provided to the American public by civil servants. ******** Plans to strengthen the understanding of the Commercial Use of Space Program will be discussed at the l-day program awareness meeting tomorrow in Rossylyn. Also, a panel will cover issues that potentially impede its future sucess. Directors of NASA's Centers for the Commercial Development of Space and Industry and industry representatives will cover long range programs, benefits and the impact on universities and the industry. ******** The UTC Pratt-Whitney van on advanced technology can be seen Wednesday, at Building 10 at NASA Headquarters. A video series and hardware displays will feature Single Crystal Casting, Computational Fluid Dynamics and Cryogenic Bearing technology. Also, a full-scale RL-10 engine will be shown along with technical experts on hand to answer questions. ******** ---------------------------------------------------------------- Here's the broadcast schedule for Public Affairs events on NASA Select TV. All times are Eastern. Tuesday, May 8...... 11:00 A.M. ROSAT news briefing and satellite showing at KSC. Launch date is May 31. Wednesday, May 9.... 12:00 Noon STS-31 crew post flight news conference at Johnson Space Center. 1:49 P.M. DARPA launch of Scout/MACSAT's. Thursday, May 10.... 11:30 A.M. NASA UPDATE will be transmitted. Friday, May 11...... 11:00 A.M. Dr. Clifford Stoll, author of "The Cuckoo's Egg" will lecture on computer security. Monday, May 14-16... 9-11:00 A.M. STS-35 Pre-Launch Briefing. Please note: Due to coverage of the STS-35/ASTRO-1 flight scheduled for May 17 at 12:45 A.M. NASA Update will transmit the next week on May 24. All events and times are subject to change without notice. ----------------------------------------------------------------- NASA Select TV: Satcom F2R, Transponder 13, 72 Degrees West Longitude, Audio 6.8, Frequency 3960 MHz. ----------------------------------------------------------------- These reports are filed daily, Monday through Friday, at 12:00 Noon, EDT. This is a service of the Internal Communications Branch, NASA Headquarters. ------------------------------ Date: 7 May 90 23:24:51 GMT From: swrinde!zaphod.mps.ohio-state.edu!sdd.hp.com!elroy.jpl.nasa.gov!jato!mars.jpl.nasa.gov!baalke@ucsd.edu (Ron Baalke) Subject: Magellan Update - 05/07/90 MAGELLAN STATUS REPORT May 7, 1990 The Magellan spacecraft continues in cruise today with all systems performing well. The spacecraft is 103,064,245 miles from Earth and 17 million miles from Venus today. Heliocentric velocity is 68,454 miles per hour. One way light time is 9 minutes and 12 seconds. The flight team last Friday celebrated the first anniversary of the May 4, 1989 launch from space shuttle Atlantis, and marked 100 days before Magellan goes into orbit around Venus. Last week began with an uncertain performance by the star tracker on a new set of stars in the Cruise 22 sequence. But an upload of new magnitude and threshold parameters solved the problem. Five of the seven daily star calibrations were fully successful; the last four in a row were perfect with an average attitude update of less than 0.05 degrees. A three-day readiness review at JPL for Venus Orbit Insertion (VOI) and In-Orbit Correction (IOC) and the May Cruise Mapping Test was satisfactorily completed. SPACECRAFT Distance from Earth (mi) 103,064,245 Velocity Heliocentric 68,454 mph One-way light time 9 mins, 12 secs Ron Baalke | baalke@mars.jpl.nasa.gov Jet Propulsion Lab M/S 301-355 | baalke@jems.jpl.nasa.gov 4800 Oak Grove Dr. | Pasadena, CA 91109 | Go Lakers! ------------------------------ Date: 8 May 90 01:36:53 GMT From: voder!dtg.nsc.com!andrew@ucbvax.Berkeley.EDU (Lord Snooty @ The Giant Poisoned Electric Head ) Subject: Re: Manned mission to Venus ,dlbres10@pc.usl.edu (Fraering Philip) writes: > About Mark Sokolowski's posting: > It is some of the worst nonsense I have read in quite a while. > Specifically: [....critique deleted...] Of course it is, in analytic terms! But you can't confront thoughts from a bag of 20-year-old hormones (don't you remember how that felt?) with cold logic. There's no argument here, because you are not speaking the same language. Nice arguments though. -- ........................................................................... Andrew Palfreyman and i am dumb to tell a weather's wind andrew@dtg.nsc.com how time has ticked a heaven 'round the stars free energy and immortality! ------------------------------ Date: 8 May 90 03:42:31 GMT From: deimos.cis.ksu.edu!maverick.ksu.ksu.edu!uafhp!bmccormi@rutgers.edu (Brian L. McCormick) Subject: Re: Manned mission to Venus In article <2655@ariel.unm.edu>, carls@carina.unm.edu (Bruce Carlson) writes: > > How long would it take to bioform Venus to acceptable limits? > It might not be possible at all. Bear in mind that Venus is hotter than the Earth not only because of a runaway greenhouse effect, but also because it is closer to the sun. Even with an Earthlike atmosphere, Venus might still be uninhabitable. There are also other problems if terraforming is actually attempted. Probably the biggest is the fact that Venus lacks hydrogen, one of the most common (in the form of water) elements in the Earth's crust and an absolutely essential element for life. Also to be considered is how to get started. The high temperature would make it difficult to ever get started by making it hard to manage ground stations which reduce the atmosphere. Anyway, given all of these factors, here is my thousand-year plan. Note that just because I suggest a way of terraforming Venus does not mean that I approve of it. Actually, I think it is A Bad Idea. 1. Orbit large numbers of reflecting panels above the planet. These panels would be constructed from lunar materials (note: assumes thriving lunar outpost) or asteroidal materials and would be intended to reduce the total amount of solar radiation reaching the planet. This would (hopefully) result in the cooling of the planet. The cooling rate could be accelerated by making the reflecting panels transparent when they are on the night side of the planet, thus allowing more heat to escape. 2. Once the planet has cooled to a reasonable temperature (perhaps after hundreds of years), a number of stations might be established on the surface. CO2 can be electrolyzed at these stations to produce carbon, which can be buried or otherwise disposed of, and oxygen, which can be used to burn hydrogen (imported from Jupiter or Saturn?) to produce water. 3. After the temperature is low enough and enough water has accumulated, oxygen can be dumped into the atmosphere and algae can be introduced into the new oceans. Shortly thereafter, other life (eventually even humans) can be introduced. Note that not all of these steps need to be accomplished one immediately following the other. There can be overlap, and indeed, would almost have to be overlap between steps two and three. Also, the orbiting panels would be de-orbited as neccesary to allow a reasonable temperature to be maintained. -------------------------------------------------------------------- (|||) Brian McCormick a.k.a. bmccormi@uafhp.uark.edu (|||) ||| - I deny being in any way affiliated with engineering - ||| (|||) Any disclaimer you can think of probably applies. (|||) -------------------------------------------------------------------- ------------------------------ Date: 5 May 90 19:00:31 GMT From: swrinde!zaphod.mps.ohio-state.edu!rpi!crdgw1!ge-dab!tarpit!peora!tsdiag!ka2qhd!kd2bd@ucsd.edu (John Magliacane) Subject: News From OSCAR-11 03-May-90 * UOSAT-2 OBC STATUS INFORMATION * DIARY OPERATING SYSTEM V3.1 SMH MLJM MSH Today's date is 5 /5 /90 (Saturday) Time is 1 :47 :17 UTC Auto Mode is selected Spin Period is - 274 Z Mag firings = 0 + SPIN firings = 3 - SPIN firings = 1 SEU count = 6 RAM WASH pointer at E20D WOD commenced 5 /5 /90 at 0 :0 :9 with channels 10 ,11 ,19 ,29 , Last cmnd was 109 to 0 , 0 Attitude control initiated, mode 1 Data collection in progress Digitalker active **** UoSAT-OSCAR-11 BULLETIN - 215 03rd May 1990 **** UoSAT MISSION CONTROL CENTRE University of Surrey, Guildford, Surrey, GU2 5XH, England * NEW DATA FORMATS * The new Forth-Diary binary packetised data format is: S0 S1 ID T0 T1 T2 T3 T4 T5 F0 F1 D0 D1...D63 C0 C1 S0,S1 : SYNC MSB,LSB ID : Data Ident T0..T5 : Timestamp F0,F1 : Frame Counter MSB,LSB D0..D63: 64 Data bytes C0,C1 : Checksum MSB,LSB 1.SYNC 5041h for UoSAT-2, 4534h for UoSAT-3. 2.ID 01 Engineering frame. 1 packet 02 Memory dump. Variable number of packets, only for debug purposes 03 Telemetry. 3 packets 04 SEU data. 10 packets 05 Extended Engineering. 2 packets 80h..FFh WOD The WOD ID byte is incremented every time a new WOD survey is started. It starts with 80h, and goes to FFh before going back to 80h. UoSAT-2 WOD outputs 372 packets, UoSAT-3 WOD is 352 packets. 3.Timestamp Each frame is timestamped at transmission. T0 is seconds, T1 minutes, T2 hour, T3 the day, T4 the month and T5 the year. All are in BCD format. 4.Frame counter Each frame is numbered according to the number of packets, as specified in 2:ID. 5.DATA 5.1.Engineering frame Byte 0: Day number. 1=Sunday, 7=Saturday. 1: NA 2: WOD survey start seconds (BCD) 3: '' minutes 4: '' hours 5: '' day 6: '' month 7: '' year 8: Diary Mode: 0=Auto, 1=Manual. 9: Last command received. 10: Command set/reset. 11: Command data. 12: Attitude control active. 13: Attitude control mode: 1=spin, 2=Mag Lock, 3=delib, 4=1 and 3. 14: WOD collection in progress. 15: WOD # channels 16: 1st WOD channel .. ... '' 25: 10th '' 26: WOD Survey Number 27: Total SEU's (MSB) 28: '' (LSB) 29: WASH RAM pointer (MSB) 30: '' (LSB) 31: Manual mode time-out counter (minutes) Followed by 32 bytes of engineering data. 5.2 Memory Memory dump, variable number of packets. 5.3 Telemetry Each TLM channel uses 2 bytes. 5.4 SEU Each of the 64 SEU entries: T0 T1 T2 T3 T4 T5 A0 A1 C0 C1 T0..T5 : time of SEU detection A0, A1 : address of the SEU (msb,lsb) C0, C1 : SEU counter (msb,lsb). ASCII download of SEU has now been stopped. 7.5 Extended Engineering data These are two frames of variable data, mainly Attitude Control related. 5.6 WOD Frame 0: T0..T5 N C0..C9 wod data.. All other frames: wod data T0..T5 : survey start time N : number of channels C0..C9 : WOD channels wod data: (4 channel example) byte0 byte1 byte2 byte3 byte4 byte5 byte6 ... MS MD LS MS MD LS MS MD LS MS MD LS MS MD LS ... Channel1 Channel2 Channel3 Channel4 Channel1 Channel2 ... MS: MSnibble, MD: Middle nibble, LS: LSnibble. ASCII WOD: the checksum on UoSAT-3 should now add up to 204 (CC hex). 6.Checksum Byte wise addition of all bytes, modulo 10000h. ** BID ** Please use BID $UOSAT.215 for PBBS use. -- 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 ------------------------------ End of SPACE Digest V11 #373 *******************