[Isocops] IBEX Goat Herder for July 21 - 22, 2021

[Chubin, Eric [US] (SP)]

All,

The first contact was nominal for CMD & TLM. The ATS was uploaded. The second Perigee contact was nominal for TLM but was unsuccessful for CMD. The second support was on USAK01 and the station was having amplifier issues throughout the support. MOC was unable to command the spacecraft and execute the SSR downlink due to this issue. Another downlink blind acquisition support has been scheduled on USHI01 for 07/24/21,205,00:00:00 - 01:00:00 at 64k. Station engineers will be inspecting the amplifier today, PR# 14637.

The inertial maneuver was successful, battery balancing is nominal, and spacecraft SOH is nominal.

Tasks Accomplished:
CAR #1179 - Orbit #536 ATS Upload
               IBEX_2021_212_o0536a_v001.scr 100 CMDS
Transmit FC Back orbit Data
Verify Inertial Maneuver and Battery Balancing

Results from the Inertial maneuver:
Q1       -0.35250200    ActNor.EstInrToBdy[0]
Q2       -0.44530400    ActNor.EstInrToBdy[1]
Q3       -0.32023700    ActNor.EstInrToBdy[2]
Q4       0.75821900     ActNor.EstInrToBdy[3]

GPS sec           1310992481    ActNor.EstTime

UTC time         07/22/2021 12:34:27 output
MPS Diff          0.714   deg
MPS Cmd Vector X     -0.457592000
MPS Cmd Vector Y     0.819336000
MPS Cmd Vector Z      0.345396000

CSS Angle TLM            0.300014
CSS Sun-Pointing Angle          0.600028
                        17 July 21 @ 12:00:00
CSS Angle TLM            0.488189
CSS Sun-Pointing Angle          0.976378
                        22 Jul 21 @ 12:30:00
Pre-Burn
Thruster 1       4880    17 July 21 @ 12:00:00
Thruster 2       4784
Thruster 3       5456
Thruster 4       5552
Post-Burn
Thruster 1       5152    22 Jul 21 @ 12:30:00
Thruster 2       5024
Thruster 3       5728
Thruster 4       5856
Number of Pulses
Thruster 1       272
Thruster 2       240
Thruster 3       272
Thruster 4       304
Thruster Pairs
Thruster 1 & 2            512
Thruster 3 & 4            576

Eric Chubin  |  Principal Engineer Satellite Systems
Northrop Grumman Corporation  |  Space Systems
O: 703-429-7015  |  C: 240-328-2098  |  eric.chubin at ngc.com

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