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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.