The Space Digest is a free monthly newsletter edited by Jim Jenkins which 
contains all kinds of information concerning space and satellites: news, 
announcement of conferences, books, preprints, software, web sites, etc. If 
you want to receive regular monthly copies of the Digest, send an Email to 
aticourses@aol.com stating Subscribe Space in the subject line. News and 
preprints of articles are also welcomed at the same address.

In This Issue:     

� CONTINUE OR DELETE YOUR FREE SPACE NEWSLETTER SUBSCRIPTION?
� FREE COMMUNICATIONS LINK BUDGET EXCEL SPREADSHEET 
� GALILEO COMPLETES FLYBY AFTER RADIATION-INDUCED SHUTDOWN RECOVERY
� HUBBLE TELESCOPE PLACED INTO SAFE HOLD AS GYROSCOPE FAILS 
� JAPANESE ROCKET H-2 BLOWN UP
� NOVEMBER LAUNCH COMPLETES GLOBALSTAR
� JIM'S RECOMMENDED ADDITIONAL SPACE NEWSLETTER 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 

CONTINUE OR DELETE YOUR FREE SPACE NEWSLETTER SUBSCRIPTION - SURVEY ?

Please give us your opinions and confirm that you wish to continue to receive 
ATI's Free Monthly Space Digest. Please cut and paste only the survey into an 
Email and return it to 
ATIcourses@aol.com
 
Delete from future mailings .............. __Yes/No__
Continue Space News Digest ............... __Yes/No__
Increase Frequency to Weekly ............. __Yes/No__
Interested in Sat Communications ......... __Yes/No__
Interested in Remote Sensing ............. __Yes/No__
Interested in Interplanetary Missions..... __Yes/No__
Interested in Spacecraft Design .......... __Yes/No__
Interested in Antenna Design.............. __Yes/No__
Interested in Commercial Space............ __Yes/No__
Interested in more tutorial articles...... __Yes/No__
Interested in ATI Defense Courses ........ __Yes/No__
Interested in ATI Information Tech........ __Yes/No__
Interested in ATI on-site courses ........ __Yes/No__
Other topics desired(list) __________________________
_____________________________________________________
_____________________________________________________
 
Do you receive ATI's printed catalog _Yes/ No _
If not, supply a full mailing address for a catalog by mail
Email _________________________________________
Name  _________________________________________
Organization  _________________________________

~~~ Please cut and paste the above into a new Email ~~~
~~~ Send to ATIcourses@aol.com~~~ 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
FREE COMMUNICATIONS LINK BUDGET EXCEL SPREADSHEET 

Readers of this newsletter can receive as a no-strings gift a 
fully-functional copy of the satellite communication link software. The 
spread-sheet includes 3 worksheets, one sheet for communication link budgets, 
the second calculates the ground station figure of merit, the third 
calculates orbital parameters given apogee and perigee altitudes. Theses are 
useful calculations for space and communications design. Respond via a 
separate Email with your name and mailing address asking for the "Link 
software" as the subject. The link budget Excel spread-sheet is developed and 
fully explained in either of ATI's courses "Ground Systems Design and 
Operation" or "Satellite RF Communications and Onboard Processing".
 
The courses are described on our web site, www.ATIcourses.com. The next 
classes are: Satellite RF Comm. & Onboard Processing -- Dec 7-9; and 
Ground System Design & Operation -- Feb 22-24

GALILEO COMPLETES FLYBY AFTER RADIATION-INDUCED SHUTDOWN RECOVERY

NASA's Galileo spacecraft completed the closest-ever encounter with Jupiter's 
volcanic moon Io, but not before giving ground controllers a Thanksgiving day 
scare. Only four hours before the Io flyby, while being bombarded by strong 
radiation, its onboard computers reset, shutting down the instruments. 
Galileo engineers at JPL sprang into action, scrambling to send new commands 
to save the flyby. This enabled the spacecraft to complete more than half of 
its planned observations of Io and all the planned observations of another 
Jovian moon, Europa. Message travel time was 35 minutes due to the distance. 
The data will be transmitted to Earth over the next several weeks. 

"With so little time to spare, it would have been easy to think 'no way' can 
we do this," said Galileo project manager Jim Erickson. "But our team members 
jumped to the challenge, in some cases leaving behind half-eaten Thanksgiving 
dinners." 

Galileo was launched in 1989 and began orbiting Jupiter in 1995. This flyby 
maneuver was known to be risky because of the radiation zones. Additional 
information about the Galileo mission may be accessed at http://galileo.jpl.nasa.gov
                                                         
HUBBLE TELESCOPE PLACED INTO SAFE HOLD AS GYROSCOPE FAILS
 
NASA's Hubble Space Telescope was placed into a safe hold when gyroscope #1 
ceased operation. With only two operational gyros remaining, the science 
program will be suspended until completion of Servicing Mission 3A, scheduled 
for launch aboard Space Shuttle Discovery on Dec. 9, 1999. Hubble's precision 
pointing system failed when the fourth of six gyroscopes malfunctioned. The 
telescope needs three working gyros in order to perform its mission of 
observing the universe. "This event underscores the wisdom of dividing the 
third HST Servicing Mission into two parts, with Servicing Mission 3A 
scheduled for December 1999 -- only 3 weeks of science data will be lost," 
said Dr. John Campbell, Hubble Space Telescope Program Manager at NASA's 
Goddard Space Flight Center, Greenbelt, MD. The telescope is not at risk. The 
safe mode does not require gyros, so even if another gyro should fail, HST 
will remain safe. During Servicing Mission 3A, astronauts will replace all 6 
of the gyroscopes, a fine guidance sensor, a transmitter, a spare solid- 
state recorder and a high-voltage/temperature kit for protecting batteries 
from overheating. Additionally, the crew will install an advanced computer. 
Just before its fourth gyro failed, Hubble researchers were able to view 
detailed images of a class of galaxies called ultra-luminous infrared 
galaxies. Several have been found to contain giant nests of up to five 
galaxies. Additional information on the mission and Hubble is available at: 
http://hubble.gsfc.nasa.gov/
 
JAPANESE ROCKET H-2 BLOWN UP

A Japanese rocket carrying a satellite failed to reach orbit and was 
deliberately blown up about eight minutes after its launch. The Japanese H-2 
rocket carrying a multi-purpose satellite for aviation control and 
meteorological observation. It was not immediately clear why the engine 
malfunctioned. It was Japan's second failure to place a satellite into 
geostationary orbit in nearly two years. In February 1998, an H-2 failed to 
properly launch a satellite, wasting an estimated $572 million. Japan's space 
program has often been criticized for its high costs and frequent mishaps, 
attributed in part to the division of responsibility for the program among no 
fewer than five government ministries. Each H-2 rocket launch to place a 
satellite into geostationary orbit costs close $180 million, about double the 
cost of competitors such as the European Space Agency's Ariane rocket. Japan 
announced in August that it was axing the smaller of its two domestic 
rockets, the J-1, in a cost-cutting move.
 
NOVEMBER LAUNCH COMPLETES GLOBALSTAR

Globalstar successfully launched an additional four low-earth-orbiting (LEO) 
satellites today on a Soyuz rocket, bringing the total number of Globalstar 
satellites now in space to 48 and completing the planned constellation. A final 
launch of four spare satellites will take place in January 2000 on a Delta 
II rocket. "Another significant Globalstar milestone has been achieved with 
this launch, the tenth this year," said Bernard L. Schwartz, Globalstar chairman 
and chief executive officer. "We have a full complement of 48 satellites supporting 
our roll-out of commercial service and are exceedingly pleased with the satellites' 
health and performance."  

RECOMMENDED ADDITIONAL SPACE NEWSLETTER

I personally receive and recommend "Chuck Fiterman's Space & Flight Launch Pad 
Email newsletter". It allows me to keep up-to-date on space and aerospace news 
on a weekly basis. Subscribe by Email at fiterman@spaceandflight.com and please
mention that you heard about his weekly newsletter from the ATI Space Digest.   
 
ATIcourses Information

You will also find links to a description of each of ATI's Courses at the web site 
below. Call us if there are courses that you would like to see presented at your 
facility. 

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ATIcourses - Applied Technology Institute (ATI)
12960 Linden Church Rd, Clarksville MD 21029 
1-888-501-2100/410-531-6034 Telephone or Fax 410-531-1013
Email: ATIcourses@aol.com
Internet: http://www.ATIcourses.com 
--Boost your technical skills with Applied Technology Institute training. -- 
ATI seminars help you stay current in your field and broaden your knowledge. 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

To unsubscribe, email ATIcourses@aol.com with a 1-line 
body: UNSUBSCRIBE atispace email@doman.tld [substituting your email address as 
seen on this message] For example: UNSUBSCRIBE atispace James.Jones@gsfc.nasa.gov, 
if that is your Email address.