Return-path: X-Andrew-Authenticated-as: 7997;andrew.cmu.edu;Ted Anderson Received: from hogtown.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 ; Sun, 17 Feb 91 01:37:27 -0500 (EST) Message-ID: Precedence: junk Reply-To: space+@Andrew.CMU.EDU From: space-request+@Andrew.CMU.EDU To: space+@Andrew.CMU.EDU Date: Sun, 17 Feb 91 01:37:23 -0500 (EST) Subject: SPACE Digest V13 #163 SPACE Digest Volume 13 : Issue 163 Today's Topics: Payload Summary for 02/05/91 [#1] (Forwarded) Payload Summary for 02/05/91 [#2] (Forwarded) CRRES Release Update Voyager Update - 02/13/91 Voyager GIF's??? 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 ---------------------------------------------------------------------- Return-path: X-Andrew-Authenticated-as: 0;andrew.cmu.edu;Network-Mail Date: 5 Feb 91 19:02:28 GMT From: trident.arc.nasa.gov!yee@ames.arc.nasa.gov (Peter E. Yee) Organization: NASA Ames Research Center, Moffett Field, CA Subject: Payload Summary for 02/05/91 [#1] (Forwarded) Sender: space-request@andrew.cmu.edu To: space@andrew.cmu.edu Payload/ELV Status Report Kennedy Space Center Friday, May 11, 1990 George Diller 407/867-2468 FTS 823-2468 CRRES/AC-69 The end-to-end compatability test with the Air Force Con- solidated Satellite Test Center in Sunnyvale was completed yes- terday, May 10, as scheduled. The testing began May 9. The "Aliveness Test," an electrical verification of the 24 chemical canisters which were installed into the spacecraft last week, was completed on Monday. Preparations for loading the hydrzaine spacecraft control propellants is underway. Sampling of the hydrazine has revealed no water or iron contaminants. A dry run of the loading activity is scheduled for next week. The actual fueling will occur May 25. Meanwhile, at Launch Complex 36, the AC-69 nose fairing was hoisted atop the Atlas Centaur vehicle late Thursday afternoon, May 10, to begin fit checks, electrical testing, and to verify that the fairing will separate as designed. It will be returned to the Payload Hazardous Servicing Facility over the weekend to await the encapsulation with CRRES the week of June 10. The Countdown Dress Rehearsal and Simulated Flight Test were rescheduled by one week to allow shipment from San Diego of a re- placement hydrogen vent valve for the Centaur. The flight simulation is now scheduled for May 23 and the countdown exercise will follow on May 30. Launch of AC-69 is now scheduled for Saturday, June 23. Delta/ROSAT The new 10-foot Delta nose fairing is atop the vehicle for fit checks, having been hoisted to the white room of Pad 17A last Monday, May 7. Solid rocket motor alignment is in work, selected ordnance is being installed on the vehicle, and pre-countdown main engine preparations are underway. Spacecraft closeouts have begun in preparation for moving ROSAT to the launch pad next week. Electrical compartments are being closed out and the final thermal insulation is being in- stalled. Today, the spacecraft is being weighed. Next week, on Monday, May 14, the attach fitting which con- nects the satellite with the Delta second stage will be bolted on. Then, on Tuesday, a protective liner will be placed around the spacecraft. Wednesday, ROSAT will be installed in a transportation canister. The move to Complex 17 is scheduled for 4:15 a.m. on Thursday, May 17. Launch remains scheduled for May 31. Gamma Ray Observatory GRO was essentially inactive last week so CRRES could be loaded with its chemical release canisters, an activity limited to only essential personnel. GRO shares the same clean room with CRRES. This week, a GRO Modified Functional Check began on Tuesday, May 8, and will conclude on Monday, May 14 which is testing in- struments and moving parts. Systems which are activated include reaction wheels and gyros, the attitude control system (ACAD), and the spacecraft's primary power systems. The routine orbital attitude thruster (OAT) leak checks were also performed. Ulysses The Ulysses spacecraft is scheduled to arrive from Germany aboard a 747 air cargo plane in the early morning on Thursday, May 17. It will be taken to NASA's Hangar AO Planetary Spacecraft Checkout Facility to begin processing. Launch aboard the Space Shuttle Discovery is scheduled for Oct. 5. ------------------------------ Return-path: X-Andrew-Authenticated-as: 0;andrew.cmu.edu;Network-Mail Date: 5 Feb 91 19:10:47 GMT From: trident.arc.nasa.gov!yee@ames.arc.nasa.gov (Peter E. Yee) Organization: NASA Ames Research Center, Moffett Field, CA Subject: Payload Summary for 02/05/91 [#2] (Forwarded) Sender: space-request@andrew.cmu.edu To: space@andrew.cmu.edu Payload Status Report Kennedy Space Center February 5, 1991 GAMMA RAY OBSERVATORY/STS-37 (April, 1991) Final electrical testing of the Gamma Ray Observatory was completed on Jan. 23. Engineers are assessing the significance of an increase in resistance measured in a diode of one of the remote interface units (RIU) which recently underwent repair and retesting at the vendor. These are the electrical interface between the observatory subsystems and experiments, and the spacecraft's modular power system and command and data handling system. The flight batteries were reconditioned on Jan. 29 and a trickle charge established. On Jan. 30 the Observatory was rotated to the vertical configuration and placed on its associated transporter. Interim closeouts of the thermal blankets were then completed. Yesterday the transportation cover was placed around the spacecraft in preparation for the one-mile trip to the Vertical Processing Facility which is scheduled to begin at 4 a.m. on Thursday, Feb. 7. TETHERED SATELLITE/STS-46 (March, 1992) In the Operations and Checkout Building, the satellite was hoisted into its deployer for the first time on Jan. 18 to begin a series of fit checks. Since that time it has been periodically removed and reinstalled to make adjustments, which were completed on Feb. 1. The satellite is presently located in an off-line laboratory for further testing. The reel assembly, currently holding a non-flight tether, was hoisted onto the flight pallet and installed Feb. 2. The deployer will be mated to the pallet in late April. ------------------------------ Return-path: X-Andrew-Authenticated-as: 0;andrew.cmu.edu;Network-Mail Date: Wed, 13 Feb 1991 10:17:44 CST From: REIFF@SPACVAX.RICE.EDU (Pat Reiff (713)527-8750-2650) Subject: CRRES Release Update To: space+@andrew.cmu.edu X-Vmsmail-To: SMTP%"space+@andrew.cmu.edu" CRRES NEWS FEBRUARY 12, 1991 The G-6 Lithium release was conducted on February 12, 1991 at 0415 UTC. The final release of the high-altitude series, the G-8 large barium, has three possible windows on February 14, 17, and 19. The window times are: February 14 0430, 0500, 0530, 0600, 0630, 0700, 0730, 0800, 0830 February 17 0200, 0230, 0300, 0330, 0400, 0430, 0500, 0530 February 19 0330, 0400, 0430, 0500, 0520, 0550, 0620, 0640 The orbit determination for February 12 and the predicted elements for February 14 are: CSTC ORBIT DETERMINATION FOR FEBRUARY 12, 1991 AND PREDICTED OSCULATING KEPLERIAN ELEMENTS FOR FEBRUARY 14, 1991 CSTC0212; the satellite name string CSTC ELEMENTS FOR 02/12/91 ; element set description 1991; the epoch year (YYYY) 43.582650463; the epoch day (DDD.dddd) 18.133533640; orbital inclination (degrees) 324.21232142; right ascension (degrees) .71345526607; eccentricity 354.15332925; argument of perigee (degrees) 2.438722854 ; mean motion (orbits/day) 137.07867720; mean anomaly (degrees) 23314.904134; semi-major axis (km) .000047087 ; decay (ndot2 orbits/day**2) 1; decay flag (0=no, 1=yes) 0. ; beacon frequency (MHz) 490 ; orbit number at epoch 0; orbit base (0=perigee, 1=equator) 0. ; nddot6 or Bahn latitude 0. ; drag or Bahn longitude 2; 0=SSI, 1=Bahn, 2=SGP, 3=SGP4/SDP4 CSTP0214; the satellite name string CSTC PRED. ELEM. 02/14/91 ; element set description 1991; the epoch year (YYYY) 45.000000 ; the epoch day (DDD.dddd) 18.12542 ; orbital inclination (degrees) 323.69311 ; right ascension (degrees) .713506 ; eccentricity 355.12370 ; argument of perigee (degrees) 2.438754519 ; mean motion (orbits/day) 301.434408 ; mean anomaly (degrees) 23315.062115; semi-major axis (km) .000047525 ; decay (ndot2 orbits/day**2) 1; decay flag (0=no, 1=yes) 0. ; beacon frequency (MHz) 495 ; orbit number at epoch 0; orbit base (0=perigee, 1=equator) 0. ; nddot6 or Bahn latitude 0. ; drag or Bahn longitude 2; 0=SSI, 1=Bahn, 2=SGP, 3=SGP4/SDP4 ------ From the First Space Science Department in the World: : _^ ^_ ____ Patricia H. Reiff : / O O \ |GO \ Department of Space Physics and Astronomy : \ V / |OWLS\ Rice University, Houston, TX 77251-1892 : / ""R"" \__/ internet: reiff@spacvax.rice.edu (128.42.10.3) \ ""U"" / SPAN: RICE::REIFF : _/|\ /|\_ "Why does man want to go to the Moon? ... Why does Rice play Texas?" ....JFK, Rice Stadium, 1962 ------------------------------ Return-path: X-Andrew-Authenticated-as: 0;andrew.cmu.edu;Network-Mail Date: 13 Feb 91 18:09:05 GMT From: usc!elroy.jpl.nasa.gov!jato!mars.jpl.nasa.gov!baalke@ucsd.edu (Ron Baalke) Organization: Jet Propulsion Laboratory, Pasadena, CA. Subject: Voyager Update - 02/13/91 Sender: space-request@andrew.cmu.edu To: space@andrew.cmu.edu VOYAGER STATUS REPORT February 13, 1991 Voyager 1 The Voyager 1 spacecraft collected routine UVS (Ultraviolet Spectrometer) data on the South Galactic Pole and Coal Sack. A frame of PWS (Plasma Wave) data was also recorded on the DTR (Digital Tape Recorder) for future playback. Round trip light time is 12 hours, 14 minutes. February 14 marked the one year anniversary of the taking of the "family portrait" images by Voyager 1. A total tracking time outage of almost 7 hours was attributed to the Goldstone 70 meter station being down for the past month. On February 1, the AACS (Attitude and Articulation Control Subsystem) A and B gyroscopes were turned on and initialized in preparation for the MAGROL (spacecraft roll maneuver) scheduled for execution on February 8. On February 5, the FDS (Flight Data Subsystem) commutator was modified from the on board sequence to increase the sampling rate of the azimuth actuator temperature. An AGCCMD (Automatic Gain Control Command Threshold) Test was also conducted. The test revealed no apparent change in spacecraft receiver or command threshold since launch. On February 6, a PMPCAL (calibrations of the Plasma, Magnetometer and Low Energy Charged Particles instruments) was executed by the spacecraft; a Dummy CC command was also transmitted to the spacecraft to reset the Command Loss Timer. The contingency real-time command for gyro drift compensation update was not needed. Also on February 6, the scheduled RFSTLC (Radio Frequency Subsystem Tracking Loop Capacitor) test was delayed three hours due to a procedural error at the 34 meter Canberra station which caused the first attempt to be aborted. The test was successful on the second attempt. Voyager 2 The Voyager 2 spacecraft collected routine UVS data on sources HD 17925 and a sky background point. Glimpses into the data indicate the instrument is doing well although there were several periods of unexplained poor quality data. There was a PWS high-rate record frame on February 5, and DTR maintenance was accomplished. Round trip light time is 9 hours, 36 minutes. On February 1, 4 and 6, the AACS B and C gyros were initialized as part of the continuing AACS gyro C test mini-sequence. A Dummy CC command was transmitted to the spacecraft on February 6 to reset the Command Loss Timer. On February 7, the gyro C test #1 was delinked, FDS commutator changes were made to support gyro C test #2, gyro C test #2 was executed and the gyro fault test was enabled. The B and C gyros indicated no abnormal behavior during the test. CONSUMABLE STATUS AS OF 02/13/91 P R O P E L L A N T S T A T U S P O W E R Consumption One Week Propellant Remaining Output Margin Spacecraft (Gm) (Kg) Watts Watts Voyager 1 5 36.2 + 2.0 366 41 Voyager 2 6 39.1 + 2.0 370 46 ___ _____ ___ /_ /| /____/ \ /_ /| Ron Baalke | baalke@mars.jpl.nasa.gov | | | | __ \ /| | | | Jet Propulsion Lab | Is it mind over matter, ___| | | | |__) |/ | | |___ M/S 301-355 | or matter over mind? /___| | | | ___/ | |/__ /| Pasadena, CA 91109 | Never mind. |_____|/ |_|/ |_____|/ | It doesn't matter. ------------------------------ Return-path: X-Andrew-Authenticated-as: 0;andrew.cmu.edu;Network-Mail Date: 15 Feb 91 01:37:38 GMT From: swrinde!elroy.jpl.nasa.gov!sdd.hp.com!spool.mu.edu!news.cs.indiana.edu!ariel.unm.edu!triton.unm.edu!jharper@ucsd.edu (JT) Organization: University of New Mexico, Albuquerque N.M. Subject: Voyager GIF's??? Sender: space-request@andrew.cmu.edu To: space@andrew.cmu.edu If I have posted this message to the wrong newsgroup please don't flame me. The subject line just about says it all. Does anybody know if any of the Voyager I/II images were ever converted to GIF format? If so, is there some FTP site where I can find these images? I would greatfully apreciate any help to this matter. The images even don't have to be in GIF format just as long as someone can tell me how to display them on a IBM PC system. Thanks in advance! -Jeff -- INTERNET: jharper@triton.unm.edu UUCP: ...!ariel!jharper ------------------------------ End of SPACE Digest V13 #163 *******************