All, 

   Attached are the planning files for Orbit #645. Please respond to this thread with comments and approvals. Approvals for the Orbit 645 ATS are required by COB, 07 April 2024.

 

Approvals for the Pre-Eclipse ATS are required by COB 16 April 2024. 

 

Please note the following: 

 

1.        Battery Balancing

Since we are setting the eclipse Flag for the upcoming eclipse rehearsal, I didn’t see the need to add balancing commands at perigee.

Eclipse Flag True: 2024/04/17 20:00:00

Eclipse Flag False: 2024/04/17 21:30:00

 

2.        Command Load Constraint Violation Report (CCVR) 

IBEX_2024_108_o0645a_v001.ccvr

# Input files:         1

#   IBEX_2024_108_o0645a_v001.scr

 

==========================

HARD CONSTRAINT VIOLATIONS

==========================

NO VIOLATIONS.

 

==========================

SOFT CONSTRAINT VIOLATIONS

==========================

The IBX-CLC-006 violations are expected since we have the long duration contacts planned on the 19th and 20th.

The IBX-CLC-015 Violation is flagging due to the long transmitter times. Why it starts so early and ends on the 22nd I’m not sure. I think the long transmitter durations are throwing off the power model.  I checked the MPS timeline, and it does show valid power after 2024/04/22 05:48:11. But, from past experience we should be power positive for the duration. 

 

IBX-CLC-006: Planned transmission at 2024/04/19 11:58:00 UTC - 2024/04/19

             14:58:00 UTC exceeds the maximum contiguous transmission time of

             5400 seconds

IBX-CLC-006: Planned transmission at 2024/04/19 14:58:00 UTC - 2024/04/19

             15:02:00 UTC is preceded by one or more additional transmissions

             which, when combined, exceed the maximum transmission time of 5400

             seconds within a 18000-second window (total planned transmission

             time this window is 11040.000 seconds)

IBX-CLC-006: Planned transmission at 2024/04/20 05:28:00 UTC - 2024/04/20

             15:02:00 UTC exceeds the maximum contiguous transmission time of

             5400 seconds

IBX-CLC-015: Battery charge falls below minimum from 2024/04/17 13:48:39 UTC -

             2024/04/22 05:48:11 UTC. Lowest charge level is 0.000000

             watt-minutes during this interval.

IBX-CLC-016: No command to enable spin pulse protection was found after

             transition to science mode at 2024/04/18 07:08:06 UTC

IBX-CLC-016: No command to enable spin pulse protection was found after

             transition to science mode at 2024/04/22 01:40:59 UTC

 

==============

OTHER MESSAGES

==============

NO MESSAGES.

 

 

Timothy E.Perry

CRS IBEX OCO-2

Mission Operations

timothy.perry@ngc.com

Office (703) 406-5976

IBEX MOC (703)404-7470

Cell (301) 606-1430