Thursday, February 8, 2018

Galileo 5/6

 2014-050A


The first two Galileo FOC (Full Operational Capability) satellites, FM01 and FM02, were launched from the Centre Spatial Guyanais on Aug 22. The satellites separated from the Fregat-MT No. 1039 upper stage at 1615 UTC. The orbit reached was more elliptical than planned, at 13700 x 25900 km x 49.7 deg. The Fregat hydrazine lines froze during its long first burn and the stage was pointing in the wrong direction during the second.

The FOC satellites have a mass of 733 kg full 660 kg dry and are built by OHB (Bremen) with navigation payloads by SSTL (Guildford) and a propulsion system from Moog ISP (Niagara Falls) with eight 1N MONARC-1 hydrazine thrusters. (Moog ISP is the former Bell Aerospace, which built the Agena engine). The earlier IOV test satellites were partly owned by ESA, but the FOC satellites are owned by the European Union's GSA (Global Navigation Satellite Systems Agency), based in Prague. The FOC satellites carry two rubidium and two hydrogen maser atomic clocks and broadcast on L-band; they also carry the MEOSAR search and rescue transponder payload.

Satellite FM01 is also called GalileoSat-5, GSAT-0201, and Doresa; it was to be in plane C2.

Size 2.5 x 1.2 x 1.2m with 14.67m span. Launch vehicle Soyuz SZ14, Fregat-MT 1039, fairing E15000-015, VS09.


GS-5 
 

DateTimeEventOrbit  

2014 Aug 22  1227:11  Launch by Soyuz ST-B  CSG ELS 
  T+1:58 BVGD strapons sep 
  T+3:29 Fairing sep
 1231:59 T+4:48 Blok A sep 
 1236:34 T+9:23 Blok I sep 
 1237:35 T+10:24 Fregat MES-1 
 1250:43 T+23:32 Fregat MECO-1  200? x 23500 x 55.0  
  Fregat attitude error 
 1605:11 T+3:39:00 MES-2 
 1611:08 T+3:43:57 MECO-2  13721 x 25920 x 49.7  
 1615:08 T+3:47:57 Payloads sep 
 1922s T+6:55 Fregat depletion 
2014 Nov 5    703.52 13723 x 25925 x 49.7 
2014 Nov 6   Orbit raise  706.01 13842 x 25930 x 49.7 
2014 Nov 24    776.25 17230 x 25970 x 49.8 
2014 Dec 15    776.19 17234 x 25963 x 49.8 

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