[Isocops] IBEX Goat Herder for may 13 & 14

Tue May 14 05:40:13 EDT 2019

All,

    The USAK01 contact @133/19:00z was cut short due to the receiver dropping out during the pass. It looks like we were in a bad part of the antenna pattern. The Eb/No was shifting between 12 and 18.5. Normally the difference is closer to 2 to 3 DB. And the receiver was between -118 and -121. At -121 is where we lose lock and the coherent signal returns back to center frequency (Non-Coherent). The duration of the pass is from 19:00 - 1930z.

   The spacecraft went thru another BCR Soft reset @133/22:32z. Standing CAR #997 BCR Software Reset Recovery was executed.

Power control was set back to Current

Heater tables - Tank 1 & 2 set points were set back to trip off @18 and trip on @16

CEU 5V was commanded to show on

PCMB was commanded to show on

Gyro was turned back on and accelerometer is the nutation sensor

Nominal commanding for the perigee passes:

SSR dump -> Dump New

Reset Master Timer

Set Spacecraft Clock

Reset FDC Totals

CAR # 1037 ATS upload -> IBEX_2019_143_o0448a_v001 93 Cmds

The Inertial maneuver was successful

Q1 0.05970120 ActNor.EstInrToBdy[0]
Q2 0.58539600 ActNor.EstInrToBdy[1]
Q3 0.64953000 ActNor.EstInrToBdy[2]
Q4 0.48151600 ActNor.EstInrToBdy[3]
GPS sec 1241809809.000 ActNor.EstTime
UTC time 05/13/2019 19:09:55 output
MPS Cmd Vector X 0.637243000
MPS Cmd Vector Y 0.710643000
MPS Cmd Vector Z 0.298175000
MPS Diff 0.729
CSS Angle TLM 0.862981
CSS Sun-Pointing Angle 1.725962
  09 May 19 @ 13:00
CSS Angle TLM 0.609093
CSS Sun-Pointing Angle 1.218186
  13 May 19 @ 19:00
Pre-Burn
Thruster 1 10736 09 May 19 @ 13:00
Thruster 2 10480
Thruster 3 12992
Thruster 4 13248
Post-Burn
Thruster 1 11008 13 May 19 @ 19:00
Thruster 2 10752
Thruster 3 13296
Thruster 4 13552
Number of Pulses
Thruster 1 272
Thruster 2 272
Thruster 3 304
Thruster 4 304
Thruster Pairs
Thruster 1 & 2 544
Thruster 3 & 4 608

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

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