Monday, December 21, 1998

STS-51 (Discovery)

 1993-058A


STS-51 suffered an RSLS abort on Aug 12, but successfully took off a month later on a mission to deploy the ACTS communications satellite and fly the ORFEUS-SPAS experiment. After a one-orbit delay due to comm problems ACTS/TOS was ejected from its cradle. Because of a command error, the explosive separation tube was more powerful than intended and left sharp edges and debris on the support cradle and in the payload bay to the rear of bay 10.


STS-51 
 

DateTimeEventOrbit  

1993 Jun 19   Tow to VAB/1 
1993 Jun 20   ET mate 
1993 Jun 28   Rollout  LC39B 
1993 Aug 12  1312:28  SSME ignition 
 1312:32  SSME shutdown, RSLS 
1993 Sep 12  1145:00  Launch from LC39 
 1147:05  SRB sep 
 1153:31  MECO 
 1153:49  ET sep  88.18 67 x 302 x 28.5 
 1208:31  ET doors closed 
 1224:54  OMS-2 2:25 68m/s 
 1227:20  OMS-2 CO 
 1327  PLBD open  90.52 296 x 302 x 28.47 
 1700?  RMS checkout 
 1856  ASE unlatch 
 1902  Clamshell open 
 1908  Tilt table raised 
 2113:28  ACTS/TOS deploy 
 2113:55  RCS sep 1m/s 
 2130:28  OMS-3R sep (0:28) 7m/s  90.77 297 x 327 x 28.46  
 2130:57  OMS-3 CO 
 2152  RMS unstow to observe TOS burn 
 2158:35  TOS burn (1:40) 
 2230?  RMS restow 
1993 Sep 13   RMS unstow 
 0923:29 OMS-4L 46s 12m/s 
 0923:47  OMS-4 CO 
 0954:18  RMS grapple SPAS 
 1000   90.33 273 x 308 x 28.5 
 1244:07  RMS unberth SPAS 
 1342  SPAS door tests 
 1505:59  Deploy SPAS  90.32 271 x 307 x 28.46 
1993 Sep 15  0600   90.30 274 x 304 x 28.5 
1993 Sep 16  0818:20  Begin AL depress 
 0829:45  Airlock depress (STSMR) 

 

0829  HO  
1993 Sep 16  0832  EVA Walz, Newman 
 0839  Egress 
 0905  PLB setup 
 0927  Walz gathering ratchet tools in airlock 
  Translation adaptation 
  High torque ratchet test at mini-ws. 
 1026  Newman working on HST PFR install 
  HST tool testing
 1230  Walz starting HST PFR eval 
 1320  Cleanup work area 
 1350  PLB cleaned up, PSA stowed 
 1407  EV crew sightseeing 
 1515  Ingress 
 1523  Prep for HC 
 1525  HC, prep for repress 
 1537  Repress (7:05:28) (STSMR) 90.30 271 x 307 x 28.46 
  RCS skeep SPAS 
1993 Sep 17  0632:44  OMS-5L 7s 2m/s 
 0632:51  OMS-5 CO 
 0710   90.35 277 x 306 x 28.46 
 1106:56  OMS-6R SPAS approach 7s 2m/s 
 1107:03  OMS-6 CO 
 1328   90.28 270 x 305 x 28.46 
1993 Sep 18  1454   90.26 268 x 306 x 28.46 
1993 Sep 19  0530?  RCS approach 
 0938:35  TI burn  
 1000  MC1 (1s) 
 1029  MC2 (6s), 10 km 
 1040  MC3 (2s)  
 1043  Tally Ho 
 1050  MC4 (1s), on manual  90.26 269 x 305 x 28.46 
 1118  V-bar, 100m 
 1149:33  RMS grapple SPAS 
 1330  RMS WSF free drift test 
 1405:44  RMS berth SPAS 
 1420  RMS ungrapple SPAS 
 1430?  RMS reberthed 
 1544   90.25 267 x 305 x 28.5  
1993 Sep 20  0445  RMS used for PLB survey 
 0525  RMS reberthed 
1993 Sep 21  0558  PLBD closed 
 0946  PLBD open, waveoff 
1993 Sep 22  0423  PLBD closed  90.25 266 x 306 x 28.5 
 0655:30  OMS DO (2:17) 77m/s  19 x 270 x 28.5 
 0657:48  OMS DO CO 
 0724:40  Entry 
 0730  80 km 
 0756:06  Landed RW15 KSC 
 0756:17  Chute 
 0756:22  NGTD 
 0756:45  Chute out 
 0756:55  Wheels stop 
 1030Tow to OPF/3 

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