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The most recent orbital elements from the NASA Prediction Bulletins are |
carried on the Celestial BBS, (513)-427-0674. Documentation and tracking |
software are also available on this system. The Celestial BBS may be |
accessed 24 hours/day at 300, 1200, or 2400 baud using 8 data bits, 1 |
stop bit, no parity. |
Orbital element sets are available via anonymous FTP from the |
following sites: |
archive.afit.af.mil (129.92.1.66) NASA,TVRO,Shuttle |
directory: /pub/space |
ftp.funet.fi (128.214.6.100) NASA,TVRO,Molczan,CelBBS, |
directory: /pub/astro/pc/satel Shuttle (*) |
kilroy.jpl.nasa.gov (128.149.1.165) NASA,Molczan |
directory: /pub/space/ |
Copies of back issues of Space Digest are archived on |
[email protected]. Send mail containing the message "INDEX SPACE" to |
get an index of files; send it the message "GET filename filetype" to |
get a particular file. |
You can get black-and-white 1:1M prints, negatives, or positives for |
$10, $18, $12 respectively for any Landsat data more than 2 years old |
from EDC, (Eros (Earth Resources Orbiting Satellite) Data Center). Call |
them at (605)-594-6511. You get 80 meter resolution from the MSS |
scanner, 135x180 kilometers on a picture 135x180 mm in size. I think you |
have to select one band from (green, red, near IR, second near IR), but |
I'm not sure. Digitial data is also available at higher prices. |
Transparencies of all NASA photos available to the public can be |
borrowed from the NASA photo archive; you can have copies or prints |
made. |
NASA Audio-Visual Facility |
918 North Rengstorff Ave |
Mountain View, CA 94043 |
The USGS address for maps of the planets is: |
U.S. Geological Survey, |
Distribution Branch, |
Box 25286, Federal Center, Bldg. 41 |
Denver, CO 80225 |
Maps cost $2.40 to $3.10 per sheet (a few come in sets of 2 or 3 sheets). |
The best global maps of Mars based on Viking images are 1:15,000,000 |
scale in 3 sheets. These maps are: |
I-1535 (2 sheets only) - relief, albedo, names |
I-1618 (3 sheets) - relief, names |
I-2030 (3 sheets) - relief, topographic contours |
I-1802-A,B,C (3 sheets) - geology |
There are many other maps as well: 30 sheets at 1:5,000,000 scale in |
relief, albedo, geology, photomosaic forms (not all 30 sheets available |
in all formats); 140 sheets at 1:2,000,000 scale as photomosaics of the |
whole planet, about 100 sheets of interesting sites at 1:500,000 scale |
in photomosaic format, and lots of special sheets. |
Then there are maps of Mercury, Venus, the Moon, the four Galilean |
Satellites, six moons of Saturn and five of Uranus. [Phil Stooke |
([email protected]), the author of this item, has offered to |
respond to email requests for information on any topic relating to lunar |
and planetary maps.] |
The Central Bureau for Astronomical Telegrams and the Minor Planet |
Center announce the sixth edition of the Catalogue of Cometary Orbits in |
IAU Circular 4935. The catalogue contains 1292 entries which represent |
all known comets through November 1989 and is 96 pages long. |
Non-subscribers to the Circulars may purchase the catalogue for $15.00 |
while the cost to subscribers is $7.50. The basic catalogue in ASCII |
along with a program to extract specific orbits and calculate |
ephemerides is available on MS-DOS 5.25-inch 2S2D diskette at a cost of |
$75.00 (the program requires an 8087 math coprocessor). The catalogue |
alone is also available by e-mail for $37.50 or on magnetic tape for |
Except for the printed version of the catalogue, the various magnetic |
media or e-mail forms of the catalogue do not specifically meantion |
non-subscribers. It is possible that these forms of the catalogue may |
not be available to non-subscribers or that their prices may be more |
expensive than those given. Mail requests for specific information and |
orders to: |
Central Bureau for Astronomical Telegrams |
Smithsonian Astrophysical Observatory |
Cambridge, MA 02138, USA |
NEXT: FAQ #4/15 - Performing calculations and interpreting data formats |
In article <[email protected]> [email protected] (Mary Shafer) writes: |
>Dryden flew the first digital fly by wire aircraft in the 70s. No |
>mechnaical or analog backup, to show you how confident we were. |
Confident, or merely crazed? That desert sun :-) |
>successful we were. (Mind you, the Avro Arrow and the X-15 were both |
>fly-by-wire aircraft much earlier, but analog.) |
Gee, I thought the X-15 was Cable controlled. Didn't one of them have a |
total electrical failure in flight? Was there machanical backup systems? |
|The NASA habit of acquiring second-hand military aircraft and using |
|them for testbeds can make things kind of confusing. On the other |
|hand, all those second-hand Navy planes give our test pilots a chance |
|to fold the wings--something most pilots at Edwards Air Force Base |
|can't do. |
What do you mean? Overstress the wings, and they fail at teh joints? |
You'll have to enlighten us in the hinterlands. |
pat |
dillon comments that Space Food Sticks may have bad digestive properties. |
I don't think so. I think most NASA food products were designed to |
be low fiber 'zero-residue' products so as to minimize the difficulties |
of waste disposal. I'd doubt they'd deploy anything that caused whole sale |
GI distress. There aren't enough plastic baggies in the world for |
a bad case of GI disease. |
pat |
I am sure Mary or Henry can describe this more aptly then me. |
But here is how i understand it. |
At Speed, Near supersonic. The wind behaves like a fluid pipe. |
It becomes incompressible. So wind has to bend away from the |
wing edges. AS the wing thickens, the more the pipes bend. |
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