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, 4 Apr 90 03:00:58 -0400 (EDT) Message-ID: Reply-To: space+@Andrew.CMU.EDU From: space-request+@Andrew.CMU.EDU To: space+@Andrew.CMU.EDU Date: Wed, 4 Apr 90 03:00:31 -0400 (EDT) Subject: SPACE Digest V11 #219 SPACE Digest Volume 11 : Issue 219 Today's Topics: Re: Fun Space Fact #1: Launcher Development Costs Re: Intelsat / Titan Failure NASA Headline News for 04/03/90 (Forwarded) Re: HST Image Status for 04/01/90 (Forwarded) Condensed CANOPUS - December 1989 Re: HST and Insects Re: B-52/Pegasus launch scheduled for April 4 (Forwarded) ---------------------------------------------------------------------- Date: 4 Apr 90 00:18:57 GMT From: serre@boulder.colorado.edu (SERRE GLENN) Subject: Re: Fun Space Fact #1: Launcher Development Costs I said: >> How is the present design more complex than the original design of ... Fred McCall responds: >I posted an (overly) long exposition on just why increasing size ... I guess I didn't make myself very clear. I'm looking for pointers to the original design or design concept that NASA produced before the requirements were expanded, if such a design exists. Sorry for the confusion. --Glenn Serre serre@tramp.colorado.edu ------------------------------ Date: 3 Apr 90 17:02:56 GMT From: cs.utexas.edu!news-server.csri.toronto.edu!utgpu!utzoo!henry@tut.cis.ohio-state.edu (Henry Spencer) Subject: Re: Intelsat / Titan Failure In article <9004021900.AA00266@ti.com> mccall@skvax1.csc.ti.com writes: >[Actually, as far as I'm concerned, we need a vehicle that can be >loaded in a matter of days, and that can take off empty in less than >24 hours from the time the decision is made to go, including fueling >and moving to the pad. I'm not even sure that it's possible to go >that quick with anything that has any real size to it... It's not only possible, you can obtain one off the shelf today -- all you need is plenty of hard currency and the phone number of Glavkosmos in Moscow. It *can* be done, but the West has generally been more interested in adding 9's on the end of (spurious) 99.999% reliability numbers than in building low-cost short-notice systems. The Taurus launcher being developed by an OSC subsidiary is specifically meant to be a short-notice launcher, although it's not large and the DARPA contract specifies somewhat more than 24 hours' notice. -- Apollo @ 8yrs: one small step.| Henry Spencer at U of Toronto Zoology Space station @ 8yrs: .| uunet!attcan!utzoo!henry henry@zoo.toronto.edu ------------------------------ Date: 3 Apr 90 18:29:32 GMT From: trident.arc.nasa.gov!yee@ames.arc.nasa.gov (Peter E. Yee) Subject: NASA Headline News for 04/03/90 (Forwarded) ------------------------------ Date: Tue, 3 Apr 90 11:25:55 PDT From: ames!nasamail.nasa.gov!jkukowski ----------------------------------------------------------------- Tuesday, April 3, 1990 Audio service: 202/755-1788 ----------------------------------------------------------------- This is NASA Headline News for Tuesday, April 3...... Technicians are surveying damage that resulted from a broken water pipe in a support building next to the Vehicle Assembly Building at Kennedy Space Center, yesterday. It's not believed the mishap will delay launch of Discovery on April 10. A deluge of water caused an electrical short-circuit shutting down a variety of computer operations and temporarily halting work on STS-31 launch preparations. A back up power system at Launch Pad 39-B kept the air conditioning system working for the Hubble Space Telescope, but battery charging for the telescope was stopped. The orbiter was powered up at 6:30 A.M., Eastern time, today, and pad workers are continuing pre-launch processing. Launch is scheduled for 8:47 A.M., EDT, on April 10. Landing at Edwards Air Force Base is scheduled for 10:02 A.M., Sunday, April 15. * * Rockwell International will provide NASA with an equipment pallet designed to extend Space Shuttle missions for periods up to 16 days. Rockwell and NASA have inked an agreement which calls for the aerospace firm to build the extended duration orbiter pallet. Rockwell will fund design and construction. NASA, after receiving the platform in 1991, will pay the firm in three annual installments. Initial use is scheduled for 1992. * * NASA and National Science Foundation representatives testify today before the Senate's Science, Technology and Space subcommittee on the agency's Mission to Planet Earth program. NASA Associate Admininstrator Lennard Fiske and Dr. Robert Corell, of the National Science Foundation, will discuss the program with senators. * * The maiden flight of the winged Pegasus orbital booster remains on schedule for Wednesday afternoon. The payload--to be deployed into a polar orbit--contains a small satellite, an instrumentation package and two barium canisters. NASA Select TV coverage of the mission begins at 1:00 P.M., EDT, Wednesday. Launch is expected about 3:10 P.M. ************** ----------------------------------------------------------------- Here's the broadcast schedule for Public Affairs events on NASA Select TV. All times are Eastern. Wednesday, April 4...... 1:00 P.M. Coverage starts of the B-52 deployment of the Pegasus orbital booster. Aircraft departure at 2:00 P.M. EDT; Air launch at about 3:10 P.M. Note: a time change for NASA Update Friday, April 6..... 11:30 A.M. Because of priority use of the transponder, NASA Update will be transmitted at 11:30 A.M., Friday, April 6. Sunday, April 15.... 9:00 A.M. STS-31 pre-launch mission status briefing. 9:30 A.M. Mission specific briefings begin on Hubble Space Telescope. 1:30 P.M. Secondary payloads briefing Monday, April 9..... 11:00 a.m. L-1 STS-31 pre-launch press conference Detailed briefing schedule will be filed tomorrow. All events and times are subject to change without notice. ----------------------------------------------------------------- These reports are filed daily, Monday through Friday, at 12 noon, EDT. ----------------------------------------------------------------- A service of the Internal Communications Branch, NASA HQ. ------------------------------ Date: 4 Apr 90 00:16:02 GMT From: zaphod.mps.ohio-state.edu!unix.cis.pitt.edu!dsinc!netnews.upenn.edu!eniac.seas.upenn.edu!hafken@tut.cis.ohio-state.edu (David Hafken) Subject: Re: HST Image Status for 04/01/90 (Forwarded) Hi. could someone tell me how to view the jupiter picture posted earlier on a macintosh? e.g. how to convert it and what prog. to use to view it. Any help would be greatly appreciated. David Hafken ------------------------------ Date: 3 Apr 90 21:53:02 GMT From: frooz!cfa.HARVARD.EDU@husc6.harvard.edu (Steve Willner, OIR) Subject: Condensed CANOPUS - December 1989 Here is the condensed CANOPUS for December 1989. There are 3 articles condensed and 3 articles by title only. CANOPUS is copyright American Institute of Aeronautics and Astronautics, but distribution is encouraged. See full copyright information at end. ------------CONTENTS -- 3 ARTICLES CONDENSED-------------------------------- GLOBE EXPERIMENT MEASURES WIND VELOCITY, DIRECTION - can891203.txt - 12/5/89 TRW TO BUILD EOS INSTRUMENT - can891205.txt - 12/5/89 SOLAR MAX'S LAST DAYS - can891206.txt - 12/5/89 ---------------------------------------------------------------------------- GLOBE EXPERIMENT MEASURES WIND VELOCITY, DIRECTION - can891203.txt - 12/5/89 Nov. 28, 1989 Baseline data for a major element of the Earth Observing System (EOS) were gathered during the Global Backscatter Experiment (GLOBE) aboard a NASA DC-8, Nov. 6-Dec. 1. GLOBE measured the number and size distribution of atmospheric particles, called aerosols, over remote areas of the tropical Pacific and the northern and southern hemispheres, including the polar regions. Fourteen flights are surveying areas believed to contain the lowest average global aerosol counts overall during periods of maximum and minimum dust concentration. The expedition is collecting baseline data for the development of the Laser Atmospheric Wind Sounder (LAWS) instrument which will be carried aboard the EOS platforms. Four experiments aboard the DC-8 involve direct aerosol sampling at the aircraft's altitude of 27,000 feet. The experiments measure amounts of 1 micron particles as well as their optical, physical and chemical properties. Three experiments use lidar to remotely sense particulates at altitudes from 1,000 to 40,000 feet. The lead instrument is a pulsed carbon dioxide lidar from the Jet Propulsion Laboratory, supported by lidars from Goddard Space Flight Center and Marshall Space Flight Center. Research aircraft from Japan, Australia and New Zealand are providing additional measurements coordinated with the DC-8 flights. TRW TO BUILD EOS INSTRUMENT - can891205.txt - 12/5/89 Dec. 3, 1989 TRW Inc. of Redondo Beach, Calif., has been selected for contract negotiations to develop instruments for the Earth Observing System. The company would design, fabricate and deliver up to six instruments for the Clouds and the Earth's Radiant Energy System (CERES) and provide support for integration, launch and mission operations. CERES consists of a pair of identical broadband, scanning radiometers to be flown on each of three satellites. The CERES experiment will provide EOS scientists with a consistent database of clouds and fields of radiation. The radiation data will be provided as fluxes at the top of the Earth's atmosphere, at the Earth's surface, and as flux divergencies within the atmosphere. The CERES mission is important to the further understanding of Earth's global systems because clouds remain one of the main sources of uncertainty in understanding climate. Also, studies of clear skies can aid in understanding hypothesized climate forcing. Finally, the data the CERES will gather are fundamental to atmospheric and oceanic energetics and to extended weather forecasting. SOLAR MAX'S LAST DAYS - can891206.txt - 12/5/89 Dec. 3, 1989 The last days of the Solar Maximum Mission satellite were taken up with engineering tests as NASA controllers exercised systems that were designed to allow the spacecraft to be returned to Earth aboard the Space Shuttle. The spacecraft re-entered the atmosphere on Dec. 2 and apparently burned up over an elliptical area in the Indian Ocean west of Sumatra. The larget chunk of the spacecraft that might have made it to Earth was the 4x5-foot titanium blade that served as the optical bench for Solar Max's science instruments. The blade was located in the center of the instrument section and thus had some protection from the earliest heating of entry. The engineering tests were designed to exercise spacecraft systems to an extent that could not be allowed during normal spacecraft operations. These included jettisoning the solar arrays and the high-gain antenna (HGA) so the spacecraft could fit in the Shuttle payload bay (the antenna was not deployed until after the repair mission in April 1984). Deterioration of Solar Max's orbit in its last week is shown by this Air Force table: Date Perigee Altitude (km) Delta (meters) 23 Nov/89 255.98 5520 24 Nov/89 250.10 5880 25 Nov/89 *240.74 9360 26 Nov/89 *235.12 5620 27 Nov/89 *228.00 7120 * - NORAD reported altitudes ----------------THREE ARTICLES BY TITLE ONLY------------------------ CoBE OPERATING WELL - can891201.txt - 12/5/89 GALILEO WEEKLY STATUS - can891202.txt - 12/5/89 MAGELLAN STATUS REPORT - can891204.txt - 12/5/89 ----------------END OF CONDENSED CANOPUS----------------------------- This posting represents my own condensation of CANOPUS. For clarity, I have not shown ellipses (...), even when the condensation is drastic. New or significantly rephrased material is in {braces} and is signed {--SW} when it represents an expression of my own opinion. The unabridged CANOPUS is available via e-mail from me at any of the addresses below. Copyright information: ------------------------------------------------------------------------ CANOPUS is published by the American Institute of Aeronautics and Astronautics. Send correspondence about its contents to the executive editor, William W. L. Taylor (taylor%trwatd.span@star.stanford.edu). Send correspondence about business matters to Mr. John Newbauer, AIAA, 1633 Broadway, NY, NY 10019. Although AIAA has copyrighted CANOPUS and registered its name, you are encouraged to distribute CANOPUS widely, either electronically or as printout copies. If you do, however, please send a brief message to Taylor estimating how many others receive copies. CANOPUS is partially supported by the National Space Science Data Center. ------------------------------------------------------------------------ ------------------------------------------------------------------------- Steve Willner Phone 617-495-7123 Bitnet: willner@cfa Cambridge, MA 02138 USA Internet: willner@cfa.harvard.edu ------------------------------ Date: 4 Apr 90 01:38:00 GMT From: zaphod.mps.ohio-state.edu!samsung!xylogics!bu.edu!mirror!frog!john@tut.cis.ohio-state.edu (John Woods) Subject: Re: HST and Insects In article <2115@kiwi.mpr.ca>, fischer@dssmv2.mpr.ca (Roger Fischer) writes: > > Regarding the recent midges incident and the earlier bees: > Is the HST insect prone or do they just not bother for other payloads. > Hey, any complex device is bound to have a few bugs in it. Sorry... -- John Woods, Charles River Data Systems, Framingham MA, (508) 626-1101 ...!decvax!frog!john, john@frog.UUCP, ...!mit-eddie!jfw, jfw@eddie.mit.edu ------------------------------ Date: 4 Apr 90 01:54:00 GMT From: zaphod.mps.ohio-state.edu!samsung!xylogics!bu.edu!mirror!frog!john@tut.cis.ohio-state.edu (John Woods) Subject: Re: B-52/Pegasus launch scheduled for April 4 (Forwarded) In article <411@argosy.UUCP>, kevin@argosy.UUCP (Kevin S. Van Horn) writes: > In article <46046@ames.arc.nasa.gov> yee@trident.arc.nasa.gov (Peter E. Yee) > writes: > > The Pegasus program is sponsored by the Department of > >Defense Advanced Research Projects Agency. Pegasus was developed > >by Orbital Sciences Corp., Fairfax, Va., and Hercules Aerospace > >Co., Wilmington, Del. > Sponsored in what way? It was my understanding that OSC and Hercules paid > for the entire development out of their own funds. Or do you consider > purchasing launches to be a form of sponsorship? No, no -- DARPA has bought the marketing rights to the slogan "The OFFICIAL Department of Death of the 1990 Pegasus Inaugural Launch"! ;-) -- John Woods, Charles River Data Systems, Framingham MA, (508) 626-1101 ...!decvax!frog!john, john@frog.UUCP, ...!mit-eddie!jfw, jfw@eddie.mit.edu ------------------------------ End of SPACE Digest V11 #219 *******************