[Isocops] IBEX Orbit# 364 ATS (19 Apr 17 - 28 Apr 17) - v001 approval
Ken Fairchild
fair-play at comcast.net
Fri Apr 7 13:27:29 EDT 2017
All,
I have looked at the orbit 364 ATS,
IBEX_2017_109_o0364a_v001.scr,
and I approve.
The only constraint violations in
IBEX_2017_109_o0364a_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_2017_109_o0364a_v002.stf.
Ascending and descending command sequences are consistent with each other and 15 Re ascending, the apogee maneuver time and 15 Re descending as determined from the OEF,
IBEX_2017_109_o0364a_v001.oef,
and as verified with ibex_orbit.
There are no star tracker outages.
There are no moon in Lo FOV sessions.
The ground station command sequences are correct and the timing and bit rates match those in the contacts file,
IBEX_Orbit364_Contacts.txt,
for all contacts (3).
We are doing battery cell balancing this orbit and the balancing commands are correct and offset by enough time from other commands.
The inertial maneuver at perigee of orbit 363 left us pointing in safe directions for the orbit 364 arc A ascending and descending sequences:
ibex_rotate -o -u 0.890695,0.420801,0.172015 -w ibex-sun -t 2017/04:19:21:31:22
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.890695,+0.420801,+0.172015
which is R.A. +25.288 Decl. +9.905
missing R.A. +27.686 Decl. +11.368 (ibex-sun)
error is R.A. +2.398 Decl. +1.463
for a total 2.774 deg
ibex_rotate -o -u 0.890695,0.420801,0.172015 -w ibex-sun -t 2017/04:23:07:36:06
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.890695,+0.420801,+0.172015
which is R.A. +25.288 Decl. +9.905
missing R.A. +31.001 Decl. +12.554 (ibex-sun)
error is R.A. +5.713 Decl. +2.649
for a total 6.197 deg
The inertial 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 0.854488,0.480615,0.197127 -w ibex-sun -t 2017/04:23:09:19:14
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.854488,+0.480615,+0.197127
which is R.A. +29.356 Decl. +11.369
missing R.A. +31.068 Decl. +12.579 (ibex-sun)
error is R.A. +1.712 Decl. +1.210
for a total 2.066 deg
ibex_rotate -o -u 0.854488,0.480615,0.197127 -w ibex-sun -t 2017/04:23:10:54:20
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.854488,+0.480615,+0.197127
which is R.A. +29.356 Decl. +11.369
missing R.A. +31.131 Decl. +12.602 (ibex-sun)
error is R.A. +1.775 Decl. +1.233
for a total 2.129 deg
ibex_rotate -o -u 0.854488,0.480615,0.197127 -w ibex-sun -t 2017/04:27:16:40:49
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.854488,+0.480615,+0.197127
which is R.A. +29.356 Decl. +11.369
missing R.A. +35.021 Decl. +13.992 (ibex-sun)
error is R.A. +5.665 Decl. +2.623
for a total 6.117 deg
The inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 365 apogee:
ibex_rotate -o -u 0.812902,0.538089,0.222825 -w ibex-sun -t 2017/04:27:18:56:25
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.812902,+0.538089,+0.222825
which is R.A. +33.502 Decl. +12.875
missing R.A. +35.104 Decl. +14.018 (ibex-sun)
error is R.A. +1.602 Decl. +1.143
for a total 1.932 deg
ibex_rotate -o -u 0.812902,0.538089,0.222825 -w ibex-sun -t 2017-05-02T16:33:41.137Z
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.812902,+0.538089,+0.222825
which is R.A. +33.502 Decl. +12.875
missing R.A. +39.892 Decl. +15.511 (ibex-sun)
error is R.A. +6.390 Decl. +2.636
for a total 6.732 deg
No Lo O-mode.
There is no overlap with orbit 363 commands by manual inspection or by checking at
http://ibex.unh.edu/cgi-bin/ats.cgi .
Command Approval Checklist is attached.
Ken
----- Original Message -----
From: "Sheral Wesley" <Sheral.Wesley at OrbitalATK.com>
To: "Sheral Wesley" <Sheral.Wesley at OrbitalATK.com>, "David Heirtzler" <dheirtzl at atlas.sr.unh.edu>, "IBEX-FDG" <IBEX.fdg at applieddefense.com>, "IBEXOPS" <IBEXOPS at gmail.com>, "ISOC" <isocops at lists.sr.unh.edu>, "Ken Fairchild" <fair-play at comcast.net>, "Ken Fairchild" <kwfairchild at gmail.com>, "Robert Lockwood" <Robert.Lockwood at OrbitalATK.com>, "Michelle Reno" <mreno at swri.edu>, "Nigel Angold" <nigel.angold at nasa.gov>, "Paul Janzen" <paul.janzen at umontana.edu>, "Timothy Perry" <Timothy.Perry at OrbitalATK.com>, "Ryan Tyler" <Ryan.Tyler at OrbitalATK.com>
Sent: Thursday, April 6, 2017 10:07:53 AM
Subject: IBEX Orbit# 364 ATS (19 Apr 17 - 28 Apr 17)
Guys, Here are the planning files and ATS for Orbit# 364.
Please respond to this email thread with your comments and approvals
Approvals are required before9 Apr 17 @1800 UTC
Note the following:
1. Battery Balancing at PERIGEE
# Orbit# 364 PERIGEE: Battery Balancing Commands
# 2017-04-28T04:35:10.442Z,Perigee,orbit:364
SetLongEclipseFlag TRUE $TIME=2017/04:28:04:00:00
SetLongEclipseFlag FALSE $TIME=2017/04:28:05:30:00
2. Command Load Constraint Violation Report
IBEX_2017_109_o0364a_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 2017/04/19 20:00:04 UTC
IBX-CLC-016: No command to enable spin pulse protection was found after
transition to science mode at 2017/04/23 10:24:20 UTC
==============
OTHER MESSAGES
==============
NO MESSAGES.
Sheral R. Wesley
Sr Systems Engineer
IBEX Mission OPS
CRS/CYGNUS Mission Planning
Bldg. 2 Room 1337
Office (703) 406-5641
Cell (202) 236-0802
Notice: This e-mail is intended solely for use of the individual or entity to which it is addressed and may contain information that is proprietary, privileged and/or exempt from disclosure under applicable law. If the reader is not the intended recipient or agent responsible for delivering the message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. This communication may also contain data subject to U.S. export laws. If so, data subject to the International Traffic in Arms Regulation cannot be disseminated, distributed, transferred, or copied, whether incorporated or in its original form, to foreign nationals residing in the U.S. or abroad, absent the express prior approval of the U.S. Department of State. Data subject to the Export Administration Act may not be disseminated, distributed, transferred or copied contrary to U. S. Department of Commerce regulations. If you have received this communication in error, please notify the sender by reply e-mail and destroy the e-mail message and any physical copies made of the communication.
Thank you.
*********************
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