Hi all,
I have looked at the orbit 0571 ATS file, IBEX_2022_164_o0571a_v001.scr and I approve.
The constraint violations in IBEX_2022_164_o0571a_v001.ccvr are from the removal of the ACT_SetSpinPulseProtectEnable Enable commands. The violations are acceptable.
The PL commands in IBEX_2022_164_o0571a_v001.scr match those in the STF, IBEX_2022_164_o0571a_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_2022_164_o0571a_v001.oef and as verified with ibex_orbit.
There are 2 star tracker outages this orbit. The first one is ~16.8 hours overlapping with perigee for Orbit 570. The second outage overlaps with perigee for Orbit 571 and lasts for ~7.5 hours.
The ground station command sequences are correct and the timing and bit rates match those in the contacts file, IBEX_Orbit571_Contacts.txt for all contacts (3).
No Battery Balancing this orbit.
The Sun maneuver at perigee of orbit 0570 left us pointing in safe directions for the orbit 0571 arc A ascending and descending sequences:
ibex_rotate -o -r +81.465 -d +23.218 -w ibex-sun -t 2022/06:14:06:51:40
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.136394,+0.908834,+0.394231
which is R.A. +81.465 Decl. +23.218
missing R.A. +82.260 Decl. +23.225 (ibex-sun)
error is R.A. +0.795 Decl. +0.007
for a total 0.731 deg
ibex_rotate -o -r +81.465 -d +23.218 -w ibex-sun -t 2022/06:17:18:23:59
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.136394,+0.908834,+0.394231
which is R.A. +81.465 Decl. +23.218
missing R.A. +85.874 Decl. +23.388 (ibex-sun)
error is R.A. +4.409 Decl. +0.170
for a total 4.053 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 0.09824,0.916981,0.386647 -w ibex-sun -t 2022/06:17:20:07:07
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.098240,+0.916980,+0.386647
which is R.A. +83.885 Decl. +22.746
missing R.A. +85.950 Decl. +23.391 (ibex-sun)
error is R.A. +2.065 Decl. +0.645
for a total 2.007 deg
ibex_rotate -o -u 0.09824,0.916981,0.386647 -w ibex-sun -t 2022/06:17:21:42:13
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.098240,+0.916980,+0.386647
which is R.A. +83.885 Decl. +22.746
missing R.A. +86.020 Decl. +23.394 (ibex-sun)
error is R.A. +2.135 Decl. +0.648
for a total 2.068 deg
ibex_rotate -o -u 0.09824,0.916981,0.386647 -w ibex-sun -t 2022/06:22:05:22:28
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.098240,+0.916980,+0.386647
which is R.A. +83.885 Decl. +22.746
missing R.A. +90.577 Decl. +23.452 (ibex-sun)
error is R.A. +6.692 Decl. +0.706
for a total 6.196 deg
The Inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 0572 apogee:
ibex_rotate -o -u 0.023099,0.920807,0.389333 -w ibex-sun -t 2022/06:22:08:07:42
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.023099,+0.920807,+0.389333
which is R.A. +88.563 Decl. +22.913
missing R.A. +90.692 Decl. +23.447 (ibex-sun)
error is R.A. +2.129 Decl. +0.534
for a total 2.029 deg
ibex_rotate -o -u 0.023099,0.920807,0.389333 -w ibex-sun -t 2022-06-27T04:53:53
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.023099,+0.920807,+0.389333
which is R.A. +88.563 Decl. +22.913
missing R.A. +95.680 Decl. +23.347 (ibex-sun)
error is R.A. +7.117 Decl. +0.434
for a total 6.558 deg
There is no overlap with orbit 0570 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: Tuesday, 2022-May-31 at 15:06
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>, Nigel Angold <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 #571 ATS Approval (13 – 22 June 2022)
CAUTION: This email originated from outside of the University System. Do not click links
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All,
Attached are the planning files for Orbit #571. Please respond to this thread with comments and approvals.
Approvals are required by 1800, 04 June 2022
Please note the following:
IBEX_2022_164_o0571a_v001.ccvr
# Input files: 1
# IBEX_2022_164_o0571a_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 2022/06/14 04:57:21 UTC
IBX-CLC-016: No command to enable spin pulse protection was found after
transition to science mode at 2022/06/17 21:12:13 UTC
==============
OTHER MESSAGES
==============
NO MESSAGES.