|
Science Forum Index » Space - Shuttle Forum » RCS call during launch
Page 1 of 1
|
| Author |
Message |
| John |
 Posted: Tue Mar 11, 2008 3:53 am |
|
|
|
Guest
|
During the early ascent, Houston made the call that there was: No
actions on the left hand RCS messages, and that they would words for
the crew later.
Anyone know what the RCS messages were and what the resolution of the
issue was?
Take care . . .
John |
|
|
| Back to top |
|
| John |
| Posted: Tue Mar 11, 2008 6:25 am |
|
|
|
Guest
|
On Mar 11, 11:16 am, "Jorge R. Frank" <jrfr...@ibm-pc.borg> wrote:
Quote: John wrote:
During the early ascent, Houston made the call that there was: No
actions on the left hand RCS messages, and that they would words for
the crew later.
Anyone know what the RCS messages were and what the resolution of the
issue was?
A card failure in Digital Signal Conditioner (DSC) OL1 resulted in loss
of insight into four thrusters (L5L and all three L2 thrusters). There
is nothing wrong with the thrusters but the software thinks there is
because the fuel injector temperatures (which are routed through the
DSC) went off-scale low. The L2 thrusters can be reselected and are GO
for on-orbit use. L5L (and consequently, vernier RCS capability in
general) is currently no-go. The flight control team is working a GMEM
(modification to orbiter's computer memory) to lower the vernier fuel
injector temp limit that would recover L5L and vern capability.
Thanks guys, solid information in reply to a question.
Its almost . . . sigh . . . like the good ol' days on here.
Take care . . .
John |
|
|
| Back to top |
|
| Alan Erskine |
| Posted: Tue Mar 11, 2008 9:20 am |
|
|
|
Guest
|
"John" <pelchat@charter.net> wrote in message
news:6857837d-a154-43c2-b9a1-0b3fff5470f1@n75g2000hsh.googlegroups.com...
Quote: During the early ascent, Houston made the call that there was: No
actions on the left hand RCS messages, and that they would words for
the crew later.
Anyone know what the RCS messages were and what the resolution of the
issue was?
I heard that too. I took it to mean there was an odd reading and it
rectified itself. |
|
|
| Back to top |
|
| Jorge R. Frank |
| Posted: Tue Mar 11, 2008 10:16 am |
|
|
|
Guest
|
John wrote:
Quote: During the early ascent, Houston made the call that there was: No
actions on the left hand RCS messages, and that they would words for
the crew later.
Anyone know what the RCS messages were and what the resolution of the
issue was?
A card failure in Digital Signal Conditioner (DSC) OL1 resulted in loss
of insight into four thrusters (L5L and all three L2 thrusters). There
is nothing wrong with the thrusters but the software thinks there is
because the fuel injector temperatures (which are routed through the
DSC) went off-scale low. The L2 thrusters can be reselected and are GO
for on-orbit use. L5L (and consequently, vernier RCS capability in
general) is currently no-go. The flight control team is working a GMEM
(modification to orbiter's computer memory) to lower the vernier fuel
injector temp limit that would recover L5L and vern capability. |
|
|
| Back to top |
|
| Craig Fink |
| Posted: Tue Mar 11, 2008 10:17 am |
|
|
|
Guest
|
John wrote:
Quote: During the early ascent, Houston made the call that there was: No
actions on the left hand RCS messages, and that they would words for
the crew later.
Anyone know what the RCS messages were and what the resolution of the
issue was?
Take care . . .
They lost monitoring of 3 rcs jet on the left aft oms pod. The jets are
still functional but not being used. For more info check out the Post
Launch News Confrence...
http://www.space-multimedia.nl.eu.org/index.php?option=com_content&task=view&id=3423&Itemid=1 |
|
|
| Back to top |
|
| |
