Hi all,
I have looked at the orbit 0575 ATS file, IBEX_2022_200_o0575a_v001.scr and I approve.
The constraint violations in IBEX_2022_200_o0575a_v001.ccvr are from the removal of the ACT_SetSpinPulseProtectEnable Enable commands. The violations are acceptable.
The PL commands in IBEX_2022_200_o0575a_v001.scr match those in the STF, IBEX_2022_200_o0575a_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_200_o0575a_v001.oef and as verified with ibex_orbit.
There is 1 star tracker outage this orbit lasting ~3 hours around perigee.
The ground station command sequences are correct and the timing and bit rates match those in the contacts file, IBEX_Orbit575_Contacts.txt for all contacts (3).
Battery Balancing is 90 minutes long, more than 2 hours away from payload descending macros, and more than 15 minutes away from a maneuver.
The Inertial maneuver at perigee of orbit 0574 left us pointing in safe directions for the orbit 0575 arc A ascending and descending sequences:
ibex_rotate -o -u -0.411305,0.839839,0.354258 -w ibex-sun -t 2022/07:20:00:13:51
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.411305,+0.839839,+0.354258
which is R.A. +116.093 Decl. +20.748
missing R.A. +119.024 Decl. +20.740 (ibex-sun)
error is R.A. +2.931 Decl. +0.008
for a total 2.741 deg
ibex_rotate -o -u -0.411305,0.839839,0.354258 -w ibex-sun -t 2022/07:23:16:09:57
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.411305,+0.839839,+0.354258
which is R.A. +116.093 Decl. +20.748
missing R.A. +122.610 Decl. +20.068 (ibex-sun)
error is R.A. +6.517 Decl. +0.680
for a total 6.145 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 -0.478457,0.809574,0.340101 -w ibex-sun -t 2022/07:23:17:53:05
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.478457,+0.809574,+0.340101
which is R.A. +120.583 Decl. +19.883
missing R.A. +122.682 Decl. +20.054 (ibex-sun)
error is R.A. +2.099 Decl. +0.171
for a total 1.980 deg
ibex_rotate -o -u -0.478457,0.809574,0.340101 -w ibex-sun -t 2022/07:23:19:28:11
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.478457,+0.809574,+0.340101
which is R.A. +120.583 Decl. +19.883
missing R.A. +122.748 Decl. +20.041 (ibex-sun)
error is R.A. +2.165 Decl. +0.158
for a total 2.041 deg
ibex_rotate -o -u -0.478457,0.809574,0.340101 -w ibex-sun -t 2022/07:28:07:35:25
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.478457,+0.809574,+0.340101
which is R.A. +120.583 Decl. +19.883
missing R.A. +127.316 Decl. +19.037 (ibex-sun)
error is R.A. +6.733 Decl. +0.846
for a total 6.404 deg
The Inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 0576 apogee:
ibex_rotate -o -u -0.544948,0.772828,0.325222 -w ibex-sun -t 2022/07:28:10:43:09
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.544948,+0.772828,+0.325222
which is R.A. +125.189 Decl. +18.979
missing R.A. +127.441 Decl. +19.002 (ibex-sun)
error is R.A. +2.252 Decl. +0.023
for a total 2.130 deg
ibex_rotate -o -u -0.544948,0.772828,0.325222 -w ibex-sun -t 2022-08-02T05:39:41
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.544948,+0.772828,+0.325222
which is R.A. +125.189 Decl. +18.979
missing R.A. +131.993 Decl. +17.873 (ibex-sun)
error is R.A. +6.804 Decl. +1.106
for a total 6.548 deg
There is no overlap with orbit 0574 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, 2022-July-6 at 13:30
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 #575 ATS Approval (19 – 28 July 2022)
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 #575. Please respond to this thread with comments and approvals.
Approvals are required by COB, 09 July 2022
Please note the following:
IBEX_2022_200_o0575a_v001.ccvr
# Input files: 1
# IBEX_2022_200_o0575a_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 2022/07/19 21:53:52 UTC
IBX-CLC-016: No command to enable spin pulse protection was found after
transition to science mode at 2022/07/23 18:58:11 UTC
==============
OTHER MESSAGES
==============
NO MESSAGES.