Hi all,
I have looked at the orbit 0601 ATS file, IBEX_2023_072_o0601a_v001.scr and I approve.
The commands between IBEX_2023_072_o0601a_v001_hgc.scr and IBEX_2023_072_o0601a_v001_hgc.stf match. The high gain test lasts for ~4.2 hours and ends ~28.1 hours before 15Re descending. I approve.
The constraint violations in IBEX_2023_072_o0601a_v001.ccvr are from the removal of the ACT_SetSpinPulseProtectEnable Enable commands. The violations are acceptable.
The PL commands in IBEX_2023_072_o0601a_v001.scr match those in the STF, IBEX_2023_072_o0601a_v002.stf.
Ascending and descending command sequences are consistent with each other, 15 Re ascending, the apogee maneuver time and 15 Re descending as determined from the OEF, IBEX_2023_072_o0601a_v001.oef and as verified
with ibex_orbit.
There is 1 star tracker outage this orbit. It lasts ~6.5 hours and ends ~1.3 hours before the perigee maneuver.
The ground station command sequences are correct and the timing and bit rates match those in the contacts file, IBEX_Orbit601_Contacts.txt for all contacts (3).
No Battery Balancing this orbit.
The Inertial maneuver at perigee of orbit 0600 left us pointing in safe directions for the orbit 0601 arc A ascending and descending sequences:
ibex_rotate -o -u 0.992667,-0.106524,-0.057146 -w ibex-sun -t 2023/03:13:14:17:50
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.992667,-0.106524,-0.057146
which is R.A. +353.875 Decl. -3.276
missing R.A. +353.024 Decl. -3.036 (ibex-sun)
error is R.A. +0.851 Decl. +0.240
for a total 0.883 deg
ibex_rotate -o -u 0.992667,-0.106524,-0.057146 -w ibex-sun -t 2023/03:17:03:49:26
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.992667,-0.106524,-0.057146
which is R.A. +353.875 Decl. -3.276
missing R.A. +356.389 Decl. -1.557 (ibex-sun)
error is R.A. +2.514 Decl. +1.719
for a total 3.043 deg
The Inertial precession maneuver at apogee leaves us pointing in safe directions at the time of the maneuver and for arc B ascending and descending sequences:
ibex_rotate -o -u 0.999114,-0.034034,-0.024746 -w ibex-sun -t 2023/03:17:05:32:34
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.999114,-0.034034,-0.024746
which is R.A. +358.049 Decl. -1.418
missing R.A. +356.454 Decl. -1.528 (ibex-sun)
error is R.A. +1.595 Decl. +0.110
for a total 1.598 deg
ibex_rotate -o -u 0.999114,-0.034034,-0.024746 -w ibex-sun -t 2023/03:17:07:07:40
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.999114,-0.034034,-0.024746
which is R.A. +358.049 Decl. -1.418
missing R.A. +356.515 Decl. -1.500 (ibex-sun)
error is R.A. +1.534 Decl. +0.082
for a total 1.536 deg
ibex_rotate -o -u 0.999114,-0.034034,-0.024746 -w ibex-sun -t 2023/03:21:16:50:24
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.999114,-0.034034,-0.024746
which is R.A. +358.049 Decl. -1.418
missing R.A. +0.436 Decl. +0.205 (ibex-sun)
error is R.A. +357.613 Decl. +1.623
for a total 2.886 deg
The Inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 0602 apogee:
ibex_rotate -o -u 0.999941,0.009023,-0.006126 -w ibex-sun -t 2023/03:21:19:58:05
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.999941,+0.009023,-0.006126
which is R.A. +0.517 Decl. -0.351
missing R.A. +0.549 Decl. +0.248 (ibex-sun)
error is R.A. +0.032 Decl. +0.599
for a total 0.600 deg
ibex_rotate -o -u 0.999941,0.009023,-0.006126 -w ibex-sun -t 2023-03-26T18:13:10
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.999941,+0.009023,-0.006126
which is R.A. +0.517 Decl. -0.351
missing R.A. +5.137 Decl. +2.237 (ibex-sun)
error is R.A. +4.620 Decl. +2.588
for a total 5.295 deg
There is no overlap with orbit 0600 commands.
Command Approval Checklist is attached.
Carol
--
Carol Weaver
University of New Hampshire
503-902-8492
From:
Perry, Timothy E [US] (SP) <Timothy.Perry@ngc.com>
Date: Wednesday, March 1, 2023 at 15:46
To: Carol Weaver <carol.weaver@unh.edu>, Chubin, Eric [US] (SP) <Eric.Chubin@ngc.com>, David Heirtzler <David.Heirtzler@unh.edu>, IBEX FDG Group <ADS-IBEX@l3harris.com>, IBEXOPS <IBEXOPS@gmail.com>, ISOC <isocops@lists.sr.unh.edu>, Ken Fairchild <fair-play@comcast.net>,
Ken Fairchild (kwfairchild@gmail.com) <kwfairchild@gmail.com>, Kenneth Fairchild <Ken.Fairchild@unh.edu>, angoldconsulting <angoldconsulting@earthlink.net>, Paul Janzen <Paul.Janzen@mso.umt.edu>, Perry, Timothy E [US] (SP) <Timothy.Perry@ngc.com>, Tyler, Ryan
S [US] (SP) <Ryan.Tyler@ngc.com>, Wesley, Sheral R [US] (SP) <Sheral.Wesley@ngc.com>, Wynn, Reese [US] (SP) <Reese.Wynn@ngc.com>
Subject: IBEX Orbit #601 ATS Approval (13 - 22 Mar 2023)
CAUTION: This email originated from outside of the University System. Do not click links or open attachments unless you recognize
the sender and know the content is safe.
All,
Attached are the planning files for Orbit #601. Both Orbit 601 ATS and HGC ATS are included for review. Please respond to this thread with comments and approvals.
Approvals are required by COB, 2 Mar 2023
Please note the following:
1.
No Battery Balancing this orbit
Begin
2023/03/13 03:00:00– End 2023/03/13 04:30:00
2.
Command Load Constraint Violation Report (CCVR)
IBEX_2023_072_o0601a_v001.ccvr
# Input files:
1
#
IBEX_2023_072_o0601a_v001.scr
==========================
HARD CONSTRAINT VIOLATIONS
==========================
NO VIOLATIONS.
==========================
SOFT CONSTRAINT VIOLATIONS
==========================
IBX-CLC-016: No command to enable spin pulse protection was found after
transition to science mode at 2023/03/13 12:09:16 UTC
IBX-CLC-016: No command to enable spin pulse protection was found after
transition to science mode at 2023/03/17 06:37:40 UTC
==============
OTHER MESSAGES
==============
NO MESSAGES.