Friday, December 22, 2006

TDRS-3

 1988-091B


The TDRS C payload was named TDRS 3 on reaching orbit. TDRS 3 was carried into space on the first `return to flight' mission, STS-26R. Discovery was launched on 1988 Sep 29 and the TDRS/IUS was deployed at The first IUS burn, at 2250 on Sep 29, left TDRS in a 632.98 min, 287 x 35797 km x 26.71 deg orbit. The second burn, at 0406 on Sep 30, put it in a 1433.48 min, 35673 x 35798 km x 2.3 deg circular orbit. By Oct 5 it had reached the TDRS WEST position at 171 W. In around 1992 it was moved to 62W as TDRS SPARE, but in 1994 it was reassigned to move back to the TDRS WEST position.


TDRS 3 
 

DateTimeEventOrbit  

1988 Sep 29  1537:00  Launch from LC39B 
 1539:05  SRB sep, 46.3 km 
 1545:33  MECO, 110.0 km  88.03 65 x 289 x 28.5 (PK) 
 1545:50  ET sep, 111.9 km  88.21 69 x 302 x 28.5 (OMS dV) 
 1616:56  OMS-2 (2:21) 68m/s 90.55 299 x 304 x 28.5 
 1619:18  OMS-2 CO 
 2100?   90.55 300 x 303 x 28.5 
 2150:04  TDRS deploy 
1988 Sep 29  2250:04  IUS-7 SRM-1 
 2252:33  SRM-1 burnout 
 2257:33  RCS-1 
 2257:53  RCS-1 end 
1988 Sep 29   632.98 287 x 35797 x 26.7  
1988 Sep 30  0356:49s SRM-2 exit cone deploy  
1988 Sep 30  0402:29s SRM-1 sep 
1988 Sep 30  0406:48  IUS SRM-2 1:49 

0408:37  IUS SRM-2 burnout 
 0412:18? RCS-2 burn 1:37 
 0413:55? RCS-2 burn end 
 0421? TDRS solar array deploy 
 0444:50s SRM-2 sep 
 0450? IUS SRM-2 CAM burn 
 0451? IUS SRM-2 RCS depletion burn 
1988 Sep 30    1433.48 35673 x 35798 x 2.3  
1988 Sep 30    1434.75 35718 x 35803 x 0.1  
1988 Oct 1    1435.07 35722 x 35811 x 0.1 GEO 178.1W+0.25E/d 
1988 Oct 4    1424.40 35554 x 35561 x 0.1 GEO 172.3W+3E/d 
1988 Oct 18   mv in  1436.50 35785 x 35803 x 0.0 GEO 149.5W 
1988 Nov 29    1436.11 35772 x 35801 x 0.0 GEO 151.1W 
1988 Dec 13    1436.01 35769 x 35801 x 0.1 GEO 151.0W 
1988 Dec 21   mv out 
1989 Jan 16   mv in  1436.23 35776 x 35801 x 0.2 GEO 171.1W 
1989 Jan   TDRS W 171W 
1990 Apr 16    1436.02 35777 x 37593 x 0.1 GEO 171.0W 
1990 May 2   Drift to 174W 
1990 May 16    1436.16 35774 x 35801 x 0.0 GEO 174.1W 
1991 Jan 27    1436.07 35777 x 35794 x 0.7 GEO 174.4W 
1991 Oct 7    1436.02 35565 x 36005 x 0.0 GEO 173.9W 
1991 Oct 8   mv out 
1991 Nov 3    1424.64 35555 x 35568 x 0.1 GEO 99.7W+2.9E 
1991 Dec 10   mv in  1436.01 35771 x 35798 x 0.1 GEO 62.2W 
1992 Jan   TDRS SPARE 62W 
1992 May 10    1436.13 35776 x 35797 x 0.5 GEO 61.9W 
1993 Aug 4    1436.21 35774 x 35803 x 0.3 GEO 61.9W 
1994 May 16    1436.00 35777 x 35792 x 1.0 GEO 61.8W 
1994 May 22   mv out 
1994 Jul 13    1442.44 35899 x 35921 x 1.1 GEO 153.7W+1.5W 
1994 Jul 30   mv in TDRS W 1436.18 35779 x 35797 x 1.1 GEO 171.3W 
1995 Mar 29    1435.95 35772 x 35795 x 1.6 GEO 171.0W 
1995 Apr 22   mv out  
1995 May 29   mv in  1436.21 35768 x 35809 x 1.7 GEO 85.2E 
1998 Mar 8    1436.01 35770 x 35799 x 3.7 GEO 85.0E 
1999 Jun 13    1436.11 35771 x 35802 x 4.6 GEO 85.4E 
2003 Sep 5    1436.23 35779 x 35799 x 7.6 GEO 84.5E 
2006 Jul 23    1436.12 35710 x 35863 x 9.7 GEO 85.1E

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