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@ngc.com