All,
I have looked at the orbit 422 ATS,
IBEX_2018_271_o0422a_v001.scr,
and I approve.
The only constraint violations in
IBEX_2018_271_o0422a_v001_.ccvr
are from the removal of the
ACT_SetSpinPulseProtectEnable Enable
commands (2); the violations are expected.
The PL commands in the v001 ATS match those in the v002 STF,
IBEX_2018_271_o0422a_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_2018_271_o0422a_v001.oef,
and as verified with ibex_orbit.
There are no star tracker outages.
The ground station command sequences are correct and the timing and bit rates match those in the contacts file,
IBEX_Orbit422_Contacts.txt,
for all contacts (3).
We are not doing battery cell balancing this orbit; we'll do it again in the next orbit.
The inertial maneuver at perigee of orbit 421 left us pointing in safe directions for the orbit 422 arc A ascending and descending sequences:
ibex_rotate -o -u -0.998671,-0.042869,-0.028602 -w ibex-sun -t 2018/09:29:05:57:32
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.998671,-0.042869,-0.028602
which is R.A. +182.458 Decl. -1.639
missing R.A. +185.315 Decl. -2.324 (ibex-sun)
error is R.A. +2.857 Decl. +0.685
for a total 2.936 deg
ibex_rotate -o -u -0.998671,-0.042869,-0.028602 -w ibex-sun -t 2018/10:02:19:33:52
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.998671,-0.042869,-0.028602
which is R.A. +182.458 Decl. -1.639
missing R.A. +188.438 Decl. -3.654 (ibex-sun)
error is R.A. +5.980 Decl. +2.015
for a total 6.304 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 -0.991748,-0.113171,-0.06023 -w ibex-sun -t 2018/10:02:21:17:00
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.991748,-0.113171,-0.060230
which is R.A. +186.510 Decl. -3.453
missing R.A. +188.503 Decl. -3.681 (ibex-sun)
error is R.A. +1.993 Decl. +0.228
for a total 2.002 deg
ibex_rotate -o -u -0.991748,-0.113171,-0.06023 -w ibex-sun -t 2018/10:02:22:52:06
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.991748,-0.113171,-0.060230
which is R.A. +186.510 Decl. -3.453
missing R.A. +188.563 Decl. -3.705 (ibex-sun)
error is R.A. +2.053 Decl. +0.252
for a total 2.064 deg
ibex_rotate -o -u -0.991748,-0.113171,-0.06023 -w ibex-sun -t 2018/10:07:08:22:15
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.991748,-0.113171,-0.060230
which is R.A. +186.510 Decl. -3.453
missing R.A. +192.691 Decl. -5.414 (ibex-sun)
error is R.A. +6.181 Decl. +1.961
for a total 6.466 deg
The inertial maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 423 apogee:
ibex_rotate -o -u -0.978852,-0.183859,-0.089694 -w ibex-sun -t 2018/10:07:10:59:15
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.978852,-0.183859,-0.089694
which is R.A. +190.638 Decl. -5.146
missing R.A. +192.794 Decl. -5.461 (ibex-sun)
error is R.A. +2.156 Decl. +0.315
for a total 2.170 deg
ibex_rotate -o -u -0.978852,-0.183859,-0.089694 -w ibex-sun -t 2018-10-12T06:07:53.545Z
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.978852,-0.183859,-0.089694
which is R.A. +190.638 Decl. -5.146
missing R.A. +197.068 Decl. -7.258 (ibex-sun)
error is R.A. +6.430 Decl. +2.112
for a total 6.732 deg
No Lo O-mode.
There is no overlap with orbit 421 commands by manual inspection or by checking at
http://ibex.unh.edu/cgi-bin/ats.cgi.
Command Approval Checklist is attached.
Ken
On September 17, 2018 at 3:57 PM "Perry, Timothy" <Timothy.Perry@OrbitalATK.com> wrote:
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All,
Attached are the planning files for Orbit # 422.
Please respond to this thread with comments and approvals.
Approvals are required by COB 18 Sept 18.
Sorry for the short notice. I missed the email on Friday.
Note the following:
1. No Battery Balancing this orbit
2. CCVR Report
# Input files: 1
# IBEX_2018_271_o0422a_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 2018/09/29 04:09:16 UTC
IBX-CLC-016: No command to enable spin pulse protection was found after
transition to science mode at 2018/10/02 22:22:06 UTC
==============
OTHER MESSAGES
==============
NO MESSAGES.
Timothy E. Perry
CRS, IBEX, OCO-2 & TESS
Mission Operations
Tim.perry@ngc.com
Office (703) 406-5976
Cell (301) 606-1430
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*********************