[Isocops] IBEX Orbit #511 ATS Approval (16 - 24 Dec 20)

Sun Dec 6 02:32:56 EST 2020

All,
    Attached are the corrected Orbit 511 Bus and combined ATS's.

1.       The 18 day timer reset command time was corrected. Originally it was set to 2020/12:07:03:15:00 which was 15 minutes after the second perigee pass. The corrected time is 2020/12:07:02:45:00 for real time verification.
IBEX,USAK01,ADD,12/07/20,342,02:00:00,12/07/20,342,03:00:00,LAHO 160K IBEX-2 Orbit# 509 SSR_Dump/Tracking Contact 14 Asc

2.       The second correction was for the housekeeping command which was missing the second numeral for the seconds  2020/12:24:03:29:5. The corrected time is  2020/12:24:03:29:56.

Timothy E.Perry
CRS IBEX OCO-2
Mission Operations
timothy.perry at ngc.com
Office (703) 406-5976
Cell (301) 606-1430

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From: Perry, Timothy E [US] (IS)
Sent: Monday, November 30, 2020 3:39 PM
To: carol.weaver at unh.edu; Chubin, Eric [US] (IS) <Eric.Chubin at ngc.com>; David Heirtzler <David.Heirtzler at unh.edu>; IBEX FDG (IBEX at applieddefense.info) <IBEX at applieddefense.info>; 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)' <kwfairchild at gmail.com>; Nigel Angold <angoldconsulting at earthlink.net>; Paul Janzen <Paul.Janzen at mso.umt.edu>; Perry, Timothy E [US] (IS) <Timothy.Perry at ngc.com>; Tyler, Ryan S [US] (IS) <Ryan.Tyler at ngc.com>; Wesley, Sheral R [US] (IS) <Sheral.Wesley at ngc.com>; Wynn, Reese [US] (IS) <Reese.Wynn at ngc.com>
Subject: IBEX Orbit #511 ATS Approval (16 - 24 Dec 20)

All,
   Attached are the planning files for Orbit #511
Since we were all off for thanksgiving. I think we can take our time and have the approvals ready for the perigee passes during orbit 509.
Please respond to this thread with comments and approvals.
Approvals are required by COB on 05 December 2020

Please note the following:

  1.  I generated 3 separate ATS files BUS, INST and a complete file. The BUS and INST will be the files to be uplinked. The complete ATS, I used as a sanity check to see how the commands lined up. Since we are in a new phase of ATS generation. IF you have any ideas of doing this differently, let me know.

  1.  The 3 ATS files have been changed to word files and encrypted. I will send out another email with the password. The files that have been transferred via MFT have not been encrypted and are still text files.

  1.  I moved the 2 House Keeping commands from the INST ATS to the BUS ATS. I commented out the 2 commands in the INST ATS. If for some reason we were unable to uplink the INST Commands for this orbit, we would have been in the wrong spacecraft state for executing the maneuver commands.

4.       No Battery Balancing this orbit

5.       APOGEE: Sun Maneuver -  $TIME=2020/12:20:01:41:59

6.       Orbit# 509 Reset Master Timer  - 2020/12:07:03:15:00

7.       Command Load Constraint Violation Report (CCVR)

IBEX_2020_350_o0511a_v001.ccvr

The soft constraint "IBX-CLC-015" is acceptable. MPS uses a history file to calculate power usage. This message is from the solar eclipse during perigee on orbit 510.
#
# Input files:         1
#   IBEX_2020_350_o0511a_v001.scr

==========================
HARD CONSTRAINT VIOLATIONS
==========================
NO VIOLATIONS.

==========================
SOFT CONSTRAINT VIOLATIONS
==========================
IBX-CLC-015: Battery charge falls below minimum from 2020/12/15 14:00:41 UTC -
             2020/12/15 15:07:41 UTC. Lowest charge level is 6094.046263
             watt-minutes during this interval.
IBX-CLC-016: No command to enable spin pulse protection was found after
             transition to science mode at 2020/12/15 23:34:47 UTC
IBX-CLC-016: No command to enable spin pulse protection was found after
             transition to science mode at 2020/12/20 02:57:05 UTC

==============
OTHER MESSAGES
==============
NO MESSAGES.

Timothy E.Perry
CRS IBEX OCO-2
Mission Operations
timothy.perry at ngc.com<mailto:timothy.perry at ngc.com>
Office (703) 406-5976
Cell (301) 606-1430

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