[Isocops] IBEX Orbit #506 ATS Approval (1 - 10 Nov 20)

[Nigel Angold]

I approve IBEX_2020_305_o0506a_BUS_v001.scr for uplink during the 17 October apogee contact.

And I approve IBEX_2020_305_o0506a_INST_v001.scr for uplink when there is space for 46 commands onboard.

As Tim pointed out, we cannot check the 4 November maneuver until 7 November. In light of the recent star tracker anomaly and out of an abundance of precaution, we have scheduled an additional contact on 2 November, just after the exit from an 8-day star tracker outage. So we can at least check that the star tracker is functioning nominally after the outage and prior to the maneuver. Commands for the additional contact are not included in IBEX_2020_305_o0506a_BUS_v001.scr but will included in a separate stand-alone ATS for uplink later.

Thanks,
Nigel

> All,
>    Attached are the planning files for Orbit #506
> Please respond to this thread with comments and approvals.  
> Approvals are required by COB on 18 October 2020
>  
> Please note the following:
> 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.
>  
> 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.  
>  
> 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. 
>  
> Apogee Inertial Maneuver – Just a note about the apogee inertial maneuver and the apogee contact. We will be entering into an antenna null just after the maneuver has completed.  The maneuver occurs on 04 Nov 2020 18:41:24 and the apogee contact AOS time is 07 Nov 20 00:28:00. That will be a little over 53 hours. The concern is that we will exit a star tracker outage on 02 Nov 2020 20:05:41.
>  
> Battery Balancing this orbit
> # Orbit 506 Battery Balancing 
> # 2020-11-09T18:25:39.001Z,Perigee,orbit:506
>  Begin - 2020/11:09:18:00:00 – End 2020/11:09:19:30:00
>  
> 6.       # Orbit# 504 Reset Master Timer  - 2020/10:22:18:45:00
>  
> 7.       Command Load Constraint Violation Report (CCVR)
> IBEX_2020_305_o0506a_v001.ccvr
> # Input files:         1
> #   IBEX_2020_305_o0506a_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 2020/10/31 20:18:00 UTC
> IBX-CLC-016: No command to enable spin pulse protection was found after
>              transition to science mode at 2020/11/04 19:56:39 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
>  
> <image001.png>
>  
>  
> <IBEX_2020_305_o0506a_v001.docx><IBEX_2020_305_o0506a_BUS_v001.docx><IBEX_2020_305_o0506a_INST_v001.docx><IBEX_2020_305_o0506a_BUS_v001.ccvr><IBEX_2020_305_o0506a_v001.ccvr><IBEX_2020_305_o0506a_INST_v001.ccvr><IBEX_2020_305_o0506a_BUS_v001.oef><IBEX_2020_305_o0506a_INST_v001.oef><IBEX_Orbit506_Contacts.txt><IBEX-Command-Approval-Checklist-Rev16_F_506_TEP.docx>
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