[Isocops] [non-nasa source] Re: Goat Herder for Sept 15 2018

Sat Sep 15 11:36:41 EDT 2018

We’ll go ahead and take tonight’s contact to double-check on this. One question I have is how many bits of change in the raw counts was this change?

Nigel

Sent from my iPhone

On Sep 15, 2018, at 7:03 AM, Angold, Nigel G. (GSFC-444.0)[Johns Hopkins University Applied Physics Lab] <nigel.angold at nasa.gov<mailto:nigel.angold at nasa.gov>> wrote:

This yellow limit violation was predicted back in the 2016 fuel study (see attached). The recommendation then was to change limits to 102 and 104 psi in 2 or 3 years i.e. around now.

Excellent strategy to add a pass tonight but we can probably wait until perigee to change the limits.

Ryan, do you agree?

Thanks,
Nigel

All,
    The support was nominal for CMD and TLM. The Inertial maneuver was successful. We did have a yellow low limit violation. The Minus X Tank pressure (ACT ActSoh.TankPressureMX) is 105.7 PSI. The current yellow low limit is set at 106.3. Razor #I100-647 “Minus X Tank Pressure is Low Yellow” has been written. Ryan Tyler has been contacted and a follow on contact has been scheduled for tonight @ 02:30gmt on Haw02.

Q1 -0.52422300 ActNor.EstInrToBdy[0]
Q2 -0.43584200 ActNor.EstInrToBdy[1]
Q3 0.47773800 ActNor.EstInrToBdy[2]
Q4 0.55407400 ActNor.EstInrToBdy[3]
GPS sec 1221040882.000 ActNor.EstTime
MPS Diff 0.567
MPS Cmd Vector X -0.984344000
MPS Cmd Vector Y 0.165517000
MPS Cmd Vector Z 0.060596000
CSS Angle TLM 0.773037
CSS Sun-Pointing Angle 1.546074
  10 Sept 18 @1600
CSS Angle TLM 0.395648
CSS Sun-Pointing Angle 0.791296
  15 Sept 18 @1000
Pre-Burn
Thruster 1 5264 10 Sept 18 @1600
Thruster 2 5136
Thruster 3 5680
Thruster 4 5808
Post-Burn
Thruster 1 5536 15 Sept 18 @1000
Thruster 2 5408
Thruster 3 5968
Thruster 4 6096
Number of Pulses
Thruster 1 272
Thruster 2 272
Thruster 3 288
Thruster 4 288
Thruster Pairs
Thruster 1 & 2 544
Thruster 3 & 4 576

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

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