Hi all,
I have looked at the orbit 0577 ATS file, IBEX_2022_218_o0577a_v001.scr and I approve.
The constraint violations in IBEX_2022_218_o0577a_v001.ccvr are from the removal of the ACT_SetSpinPulseProtectEnable Enable commands. The violations are acceptable.
The PL commands in IBEX_2022_218_o0577a_v001.scr match those in the STF, IBEX_2022_218_o0577a_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_218_o0577a_v001.oef and as verified with ibex_orbit.
There is 1 star tracker outage this orbit. It lasts for ~27 hours and ends ~12 hours before the apogee maneuver.
The ground station command sequences are correct and the timing and bit rates match those in the contacts file, IBEX_Orbit577_Contacts.txt for all contacts (2).
No Battery Balancing this orbit.
The Inertial maneuver at perigee of orbit 0576 left us pointing in safe directions for the orbit 0577 arc A ascending and descending sequences:
ibex_rotate -o -u -0.664328,0.689303,0.289015 -w ibex-sun -t 2022/08:07:03:54:37
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.664328,+0.689303,+0.289015
which is R.A. +133.943 Decl. +16.799
missing R.A. +136.813 Decl. +16.505 (ibex-sun)
error is R.A. +2.870 Decl. +0.294
for a total 2.765 deg
ibex_rotate -o -u -0.664328,0.689303,0.289015 -w ibex-sun -t 2022/08:10:18:56:55
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.664328,+0.689303,+0.289015
which is R.A. +133.943 Decl. +16.799
missing R.A. +140.174 Decl. +15.524 (ibex-sun)
error is R.A. +6.231 Decl. +1.275
for a total 6.118 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 -0.71826,0.642266,0.267575 -w ibex-sun -t 2022/08:10:20:40:03
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.718260,+0.642266,+0.267575
which is R.A. +138.197 Decl. +15.520
missing R.A. +140.242 Decl. +15.504 (ibex-sun)
error is R.A. +2.045 Decl. +0.016
for a total 1.971 deg
ibex_rotate -o -u -0.71826,0.642266,0.267575 -w ibex-sun -t 2022/08:10:22:15:09
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.718260,+0.642266,+0.267575
which is R.A. +138.197 Decl. +15.520
missing R.A. +140.306 Decl. +15.486 (ibex-sun)
error is R.A. +2.109 Decl. +0.035
for a total 2.032 deg
ibex_rotate -o -u -0.71826,0.642266,0.267575 -w ibex-sun -t 2022/08:15:11:26:32
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.718260,+0.642266,+0.267575
which is R.A. +138.197 Decl. +15.520
missing R.A. +144.720 Decl. +14.068 (ibex-sun)
error is R.A. +6.523 Decl. +1.452
for a total 6.471 deg
The Inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 0578 apogee:
ibex_rotate -o -u -0.769676,0.589292,0.245629 -w ibex-sun -t 2022/08:15:15:29:21
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.769676,+0.589292,+0.245629
which is R.A. +142.561 Decl. +14.219
missing R.A. +144.876 Decl. +14.009 (ibex-sun)
error is R.A. +2.315 Decl. +0.210
for a total 2.254 deg
ibex_rotate -o -u -0.769676,0.589292,0.245629 -w ibex-sun -t 2022-08-20T11:51:22
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.769676,+0.589292,+0.245629
which is R.A. +142.561 Decl. +14.219
missing R.A. +149.262 Decl. +12.508 (ibex-sun)
error is R.A. +6.701 Decl. +1.711
for a total 6.740 deg
There is no overlap with orbit 0576 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: Monday, 2022-July-25 at 13:42
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 #577 ATS Approval (6 – 15 Aug, 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 #577. Please respond to this thread with comments and approvals.
Approvals are required by COB, 27 July 2022
Please note the following:
IBEX_2022_218_o0577a_v001.ccvr
# Input files: 1
# IBEX_2022_218_o0577a_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 2022/08/07 01:22:01 UTC
IBX-CLC-016: No command to enable spin pulse protection was found after
transition to science mode at 2022/08/10 21:45:09 UTC
==============
OTHER MESSAGES
==============
NO MESSAGES