ARLA/CLUSTER: Status do Modulo de Packet a bordo da ISS

[João Costa > CT1FBF]

Packet Module status on board ISS

*ARISS* has received several reports stating that the packet system on ISS
is down.  Here is what we know and our current forward plan

The packet system in the Columbus module started to act up late last week,
sending only a beacon.  The ARISS team requested a power recycle by the
crew, and with that power recycle, the packet system appears to have stop
functioning completely.  Note that this unit has been on-orbit for 17
years.  It was launched on the STS-106 Space Shuttle Atlantis mission in
September 2000 and was built, tested and certified for flight about 20
years ago.

The ARISS team has had some extensive discussions on the way forward.  We
would first like to do some additional troubleshooting with the existing
packet module.  It will take some time (weeks) to develop troubleshooting
procedures, get the procedures approved by NASA and then conduct the tests
with the crew.  This includes an additional power cycle.

The turnaround time is much longer than usual because a new crew will soon
be arriving on ISS.  The current crew is focused on the new crew arrival
and there will be about a one- to two-week transition after the new crew
arrives.  On the positive side, one aspect of our troubleshooting - a
second power cycle-will occur automatically because ARISS is shut down
during crew docking and turned on afterwards.  However, there will be more
to our troubleshooting than just the power cycle.

We have some additional plans with alternative solutions, but those are
currently being discussed and prioritized within the ARISS team.  All
solutions will require international ARISS team coordination, additional
procedures and crew interaction.  People who have carefully followed ISS
operations know that crew time continues to evolve with the more extensive
research that is occurring on-board.  Suffice it to say, it will take
longer than what it has taken in the past to work through this issue.

The above information is to make sure that ARISS properly sets expectations
on how long it will take to resolve this.  At this point, expect a few
months with no ARISS packet.

As you all can see, deploying the Interoperable Radio system that is
currently under development by ARISS has become even more critically
important.  The ARISS team is laser focused on getting that system
developed and deployed.  We are conducting a final design review with NASA
on this system next week.  But we cannot get to the finish line without
your help.  If you can, please consider a donation to the ARISS radio fund
by clicking on the ARISS donate button on the ARISS web page.  All
donations, large and small are appreciated http://www.ariss.org/donate.html

On behalf of ARISS, we thank you for your sustained interest and support of
our program.

Sincerely,

*Frank H. Bauer, KA3HDO*
ARISS International Chair

*About ARISS*

Amateur Radio on the International Space Station (ARISS) is a cooperative
venture of international amateur radio societies and the space agencies
that support the International Space Station (ISS). In the United States,
sponsors are the Radio Amateur Satellite Corporation (AMSAT), the American
Radio Relay League (ARRL), the Center for the Advancement of Science in
Space (CASIS) and the National Aeronautics and Space Administration (NASA).

The primary goal of ARISS is to promote exploration of science, technology,
engineering, and mathematics (STEM) topics by organizing scheduled contacts
via amateur radio between crew members aboard the ISS and students in
classrooms or informal education venues.  With the help of experienced
amateur radio volunteers, ISS crews speak directly with large audiences in
a variety of public forums.  Before and during these radio contacts,
students, teachers, parents, and communities learn about space, space
technologies and amateur radio.

Amateur Radio on the International Space Station (ARISS)
http://www.ariss.org/
https://twitter.com/ARISS_status
https://www.facebook.com/Amateur-Radio-on-the-International-Space-Station-ARISS-153679794647788/
-------------- próxima parte ----------
Um anexo em HTML foi limpo...
URL: http://radio-amador.net/pipermail/cluster/attachments/20170727/7be0355b/attachment.html