Monday, August 11, 1980

San Marco 4

 1974-009A


The San Marco C2 satellite repeated the San Marco C program. The 0.71m dia 176 kg spherical satellite had four 0.49m antennae on the top for a total height of around 1.0m. It was named San Marco 4 after launch in Feb 1974. The orbit was slightly higher than planned, with an apogee of 930 km instead of 850. However, the drag balance experiment did not work correctly after launch.

The Italian Space Commission (Commisione per le Richerche Spaziali, CRS) signed a memorandum of understanding with NASA for the launch; CRA (Centro Ricerche Aerospaziali) managed the project. Command was from MITS, the Mobile Italian Telemetry Station in Kenya.


San Marco 4 
 

DateTimeEventOrbit  

1974 Feb 18  1005:28  Launch by Scout D-1  SMLC 
 1006:48 Algol burnout T+1:20 
 1006:54  Castor burn T+1:26 
 1007:34  Castor burnout T+2:06 
  T+3:04 Fairing sep
 1007 Antares burn T+3:06 
 1008  Antares burnout T+3:43 
 1010:53 T+5:25 Stage 3 sep  
 1010  T+5:30 Stage 4 burn 31s 
 1011  T+6:01 Stage 4 burnout 
  T+6:35 Despin 
 1015  T+10:25 Stage 4 sep  95.9 231 x 910 x 2.9 
1974 Feb 19   Omegatron cover ejected 
  NACE cover ejected 
1974 Feb 22   NACE activated 
1976 May 4   Reentered

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November 20,2006

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