Saturday, September 5, 2020

MAVEN

 2013-063A


Mars Atmosphere and Volatile Evolution is Mars Scout 2. Managed by GSFC, PI is Jakosky/Colorado, with science ops at LASP. Built by LMA/Denver. Box + dish + 2 panel, derived from MRO. 2.0m dia HGA. Span 11.3m across solar panels, about 12 m across LPW antennae

Mass 2550 kg wet, 903 kg post MOI, 1640 kg prop capacity (1645 kg actually filled; 2459 kg launch). AOCS has 3 thrusters

Launch 2013 Nov-Dec with B-plane miss of 83000 km (Jesick et al 2016) MOI 2014

Into 145 x 6230 x 75 deg, 4.5hr orbit. Will 'deep dip' to 125 km altitude for 5-day campaigns; primary mission is 1 year in orbit.


MAVEN 
 

DateTimeEventOrbit  

2013 Nov 18  1828:00 Launch by Atlas V 401  CC SLC41 
  Azimuth 94.0 deg
  T+4:02 Atlas BECO 
 1832 T+4:08 Atlas sep 
 1832 T+4:18 Centaur MES1 9:30 
 1832 T+4:26 PLF sep 
 1841 T+13:48 MECO1 241 km 167 x 315 x 26.66 
 1901  157 x 324 x 26.68 
 1906:33  T+38:33 160 km, RA 167.715 AOP 216.64 157 x 320 x 26.658 
 1909 T+41:24 MES2 5:29 163 km 
 1914 T+46:53 MECO2 
 1920 T+52:42 Centaur sep 192 x -78300 x 28.6 
   195 x -78202 x 27.71 (Nov 17 plan)  
2013 Nov 19  0347 Pass EL1:4 
2013 Nov 23  0924? Pass L1 radius, in solar orbit 
   485.90d 0.9667AU x 1.452AU x 2.02 
  Type II trajectory 
2013 Dec 3   TCM1 4.8m/s 
2014 Feb 26   TCM2 19s 0.69m/s 
2014 Sep 18  1147  Enter Mars gravisphere 
2014 Sep 22  0130   537 x -15778 x 74.2 
2014 Sep 22  0138:25 MOI 0:34:22 1.233km/s, over N pole 
 0212:47 MOI CO 372 x 44351 x 74.2  
2014 Sep 24 0632 Period Lowering Mvr-1 at apo, reduce peri 110s 8.0m/s  194 x 44506 x 74.2  
2014 Sep 26  1015? Orbit adjust?  194 x 44290 x 74.2 
2014 Sep 27  2100   193 x 44239 x 74.2 
 2130   196 x 43519 x 74.2 
 2130? Period Reduction Mvr-1 at peri, 455 m/s   
 2200   191 x 7954 x 74.2 
 2220   185 x 7944 x 74.2 
2014 Sep 28  0000   186 x 7965 x 74.2 
2014 Oct 2  2100   185 x 7944 x 74.2 
 2120? PRM-2   
 2200   182 x 6400 x 74.2 
2014 Oct 5  2110  PLM-2  184 x 6421 x 74.2 
 2115? PLM-2 CO  168 x 6421 x 74.2 
  Deploy booms 
2014 Oct   Science phase  150 x 6200 x 75 
2014 Oct 9  1025   169 x 6357 x 74.2 
2014 Oct 9  1030? PRM-3, OTM for C/2013A1 flyby prep  174 x 6423 x 74.2 
  Deploy Langmuir probe/Waves antennas 
 2200   168 x 6420 x 74.2 
2014 Oct 10?   NGIMS breakoff cap ejected  166 x 6416 x 74.2  
2014 Oct 19   C/2013A1 Siding Spring flyby of Mars at 132000 km 
2014 Oct 23  2310   171 x 6413 x 74.2 
 2315  PLM-3  154 x 6413 x 74.2 
2014 Nov 19  0130   157 x 6399 x 74.3 
 0140  PLM-4  140 x 6398 x 74.3  
2014 Dec 3  2250?  140 x 6386 x 74.3 
2014 Dec 6  0630   139 x 6390 x 74.2 
 0650? PLM-5?  129 x 6390 x 74.2 
2015 Jan 15  0920   131 x 6375 x 74.2 
 1000  
138 x 6381 x 74.3 
2015 Jan 18  0000   134 x 6376 x 74.3 
2015 Jan 29  1100   130 x 6376 x 74.3 
 1300  Raise period147 x 6368 x 74.2 
2015 Feb 10

 

2110   138 x 6374 x 74.2 
2015 Feb 11  0130  Deep dip 1, antisolar, 155 to 134 km, 3.3m/s 
   118 x 6374 x 74.2 
2015 Feb 18   End DD1 
2015 Feb 19    142 x 6129 x 74.2 
2015 Apr 18   Deep Dip 2 
2015 Apr 23   End DD2 
2015 Jul 2  0440  143 x 6111 x 74.2 
 0450  Orbit trim  127 x 6111 x 74.2  
2015 Jul 8  0250? Deep Dip 3 
2015 Jul 15  0150? End DD3, 3.9m/s 
2015 Sep 2  0150? Deep Dip 4 
2015 Sep 3    99 x 6466 x 74.2 
2015 Sep 9   Walk-out 1 3.3m/s 
2015 Sep 10   Walk-out 2 0.6m/s 
2015 Nov   Begin extended mission 
2016 Mar 1  0000   136 x 6227 x 74.2 
2016 Jun 7   Begin deep dip 5, terminator 35N 
2016 Jun 8   Burn 2 and 3, dV 4.6m/s total 
2016 Jun 30?  End DD5 
2016 Jul 26   Deep Dip 6 DV1 
2016 Jul 27   Deep Dip 6 DV2, 4 m/s 
2016 Aug 4   Complete DD6 
2017 Feb 28   0.4m/s burn, avoid Mar 6 Phobos impact 
2017 Aug 14  Deep Dip 7  
2018?  Raise period for relay phase 

Payload:

  • Particles and fields package (UCB-SSL)

    • SWEA Solar Wind Electron Analyser (solar wind particles, Mars ionospheric e) (UCB-SSL/CESR/), 1.7m boom

    • SWIA Solar Wind Ion Analyser (UCB-SSL/)

    • STATIC Suprathermal and Thermal Ion Composition (UCB-SSL/)

    • SEP Solar energetic particles (UCB-SSL/)

    • LPW Langmuir probe and Waves, ionospheric properties and EUV energy input (LASP/) 7 m booms

    • MAG Magnetometer (GSFC/)

  • Remote Sensing Package, on 2.3m boom

    • IUVS Imaging UV spectrometer, for upper atm. (CU-LASP/)

  • NGIMS Neutral Gas and Ion Mass Spectrometer, composition of thermal particles (GSFC/)

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