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Particles and Fields Package (PFP) Instrument Preliminary Design Review Operations

Particles and Fields Package (PFP) Instrument Preliminary Design Review Operations. David L. Mitchell. The Particles and Fields Package. LPW- EUV. SWIA. LPW. SWEA. MAG. SEP (sunward FOV not shown). MAG. STATIC. S olar W ind I on A nalyzer (SWIA) - SSL

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Particles and Fields Package (PFP) Instrument Preliminary Design Review Operations

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  1. Particles and Fields Package (PFP) Instrument Preliminary Design Review Operations David L. Mitchell

  2. The Particles and Fields Package LPW- EUV SWIA LPW SWEA MAG SEP (sunward FOV not shown) MAG STATIC Solar Wind Ion Analyzer (SWIA) - SSL Solar Wind Electron Analyzer (SWEA) – CESR / SSL Langmuir Probe and Waves (LPW) – LASP / SSL Plus Extreme Ultra-Violet (LPW-EUV) - LASP Solar Energetic Particle Detector (SEP) - SSL Magnetometer (MAG) – GSFC Supra-Thermal and Thermal Ion Composition (STATIC) - SSL

  3. APP Instruments Inner Gimbal SC +y Outer Gimbal i k • Inner gimbal rotates about spacecraft body y axis • Outer gimbal rotates about APP j axis STATIC j +i is in the NGIMS Boresight Direction +j is in the main IUVS Boresight Direction +k defined to be a right-handed coordinate system

  4. Day in the Life LPW-EUV occultations

  5. Coverage of the Mars Environment Periapsis Pass 1000 sheath 600 pileup ionosphere 300 exobase deep dip homopause 100 120 130 140 150 Minutes S/C Slew

  6. PF Instrument Operations S/C Attitude Inertial Point Sun/Nadir Point Sun/Nadir Point Inertial Point RAM slew slew slew slew APP Mode Nadir Track (STATIC priority) Nadir Track (STATIC priority) RAM Track Fixed Fixed M M H L L LPW EUV Solar Monitor M M H L SEP L MAG H L L SWIA Solar Wind and Magnetosheath Modes (internally triggered) Iono Mode SWEA Solar Wind Mode Solar Wind Mode STATIC C C Pickup Ions & Magnetosheath RAM Pickup Ions & Magnetosheath 5600 6200 500 500 5600 Spacecraft Altitude (km) 0 45 90 135 180 225 270 Time Since Apoapsis (min) Key: H/M/L = high/medium/low data rates; C = ion conics and outflow Standard Orbit

  7. PF Instrument Operations Deep Dip Orbit S/C Attitude Inertial Point Sun/Nadir Point Sun/Nadir Point Inertial Point RAM slew slew slew slew APP Mode Nadir Track (STATIC priority) Nadir Track (STATIC priority) RAM Track Fixed Fixed M M H L L LPW EUV Solar Monitor M M H L SEP L MAG H L L SWIA HV Off Solar Wind / Magnetosheath Modes Solar Wind / Magnetosheath Modes SWEA HV Off Solar Wind Mode Solar Wind Mode STATIC Pickup Ions & Magnetosheath HV Off C Pickup Ions & Magnetosheath C 5600 6200 500 500 5600 Spacecraft Altitude (km) 0 45 90 135 180 225 270 Time Since Apoapsis (min) Key: H/M/L = high/medium/low data rates; C = ion conics and outflow, HV Off at pressure > 10-5 torr

  8. PF Instrument Operations

  9. Ground Data System SSL IDL Package decommutation calibration data products analysis

  10. PF Commanding The SOC will generate routine command scripts to run the PF instruments based on parameterized inputs from the PF team orbit phased mode changes altitude based rules eclipse based rules spacecraft orientation based rules instrument safing commands high voltage off during deep dips close SEP attenuator when Sun in FOV close EUV shutter when viewing the RAM direction at periapsis The PF team will generate occasional non-interactive parameter change commands to adjust the instrument and send to the SOC for upload

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