Saturday, July 18, 2009

Coriolis

 2003-001A


The Coriolis mission is an STP flight P98-2 carrying Windsat and SMEI. Coriolis will use a Spectrum Astro SA-200HP bus and launch by Titan II. Windsat operates as a USN/ONR satellite managed by NRL under the STP, as part of the Coriolis mission. Windsat uses a polarimetric microwave radiometer to measure wind speed and direction; earlier missions did not have all the Stokes parameters and so could not determine direction. It has a 1.8m microwave reflector and horns operating at 10.7, 18.7 and 37 GHz. Horns at 6.8 and 23.8 GHz will measure only 2 of 6 polarization components.

Assembly by Det 12 STP/Kirtland, oprations at Kirtland for first year and then by NSOC Pt Mugu. Mass 377 kg bus, 827 kg total. 4.7h 1.3dia + panel. Cylinder + truss + panel. 82 kg propellant. First use of large 7.6m fairing on the Titan 2 SLV.

It was inserted into a 281 x 845 km transfer orbit on 2003 Jan 6 and used onboard propulsion to reach its operational 822 x 841 km x 98.7 deg orbit by Jan 18.


Coriolis 
 

DateTimeEventOrbit  

2003 Jan 6  1419 Launch by Titan II  V SLC4W 
  T+2:34 St 1 MECO 
  T+2:35 Stage 1 sep 
  T+2:35 Stage 2 TIG 
  T+3:33 Fairing sep
 1424  T+5:32 Stage 2 MECO  219 x 824 x 98.7 
 1514 T+55:48 Titan stage 2 RCS burn, 110s burn  278 x 827 x 98.7 
 1517 T+58:38 Titan 2 sep  273 x 830 x 98.7  
2003 Jan 9    95.93 281 x 845 x 98.7 
2003 Jan 10    97.08 391 x 846 x 98.7 
2003 Jan 11    98.14 489 x 849 x 98.7 
2003 Jan 12    99.12 579 x 853 x 98.7 
   99.57 621 x 855 x 98.7 
2003 Jan 13    100.03 663 x 855 x 98.7 
2003 Jan 14    100.46 703 x 857 x 98.7 
2003 Jan 15    101.31 781 x 860 x 98.7 
2003 Jan 16    101.38 814 x 833 x 98.7 
2003 Jan 17    101.17 804 x 823 x 98.7 
2003 Jan 18    101.55 822 x 841 x 98.7 
2003 Feb 8    101.55 822 x 841 x 98.7 
2005 Feb 13   Windsat BAPTA lube failure? 
2005 Jul   Windsat operations resume 

Payload:

  • Windsat Passive ocean surface wind vector polarimetric radiometry, NRL; 6.8, 10.7, 18.7, 23.8 and 37 GHz; 1.83m reflector, 1025 km swath.

  • SMEI Solar Mass Ejection Imager, USAFRL, camera with 0.1 percent photometry. GL-802

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