Wednesday, March 22, 1995

STS-51-A (Discovery)

 1984-113A


Mission 51-A deployed two satellites and carried out the spectacular salvage of the HS-376 satellites deployed on the 41-B mission.


STS 51-A mission events 
 

DateTimeEventOrbit  

1984 Oct 18   Tow to VAB  VAB/3 
1984 Oct 19   ET Mate 
1984 Oct 23   Rollout  LC39A 
1984 Nov 8  1215:00  Launch from LC39A 
 1217:06  SRB sep. 47.6 km 
 1223:33  MECO, 110.2 km 
 1223:51  ET sep, 111.7 km  86.06 7 x 149 x 28.48 (dV) 
 1225:33  OMS-1 (2:31) 72m/s  88.42 96 x 297 x 28.5 (PK) 
   88.47 101 x 296 x 28.5 (dV) 
 1228:04  OMS-1 CO 
 1238?  ET apogee 
 1259:43  OMS-2 (1:55) 54m/s   
 1301:38  OMS-2 CO 
 1302  ET breakup 
 1344  PLBD open  90.32 284 x 296 x 28.5  
 2201  NC-1 (OMS LH 11s) 3m/s 90.44 293 x 298 x 28.47 
1984 Nov 9  0431   90.44 293 x 297 x 28.47 
 1202  Trim?  90.39 288 x 298 x 28.47 
 1247?  CIRC-1 (OMS RH 16s) 4m/s 

2104:32  Anik D2 deploy  90.60 300 x 307 x 28.47 
 2120?  A-SEP (OMS LH 13s) 3m/s 90.72 306 x 313 x 28.47 
1984 Nov 10  1256:07  Syncom deploy 
 1310? S-SEP (OMS LH 13s) 5m/s 90.87 312 x 322 x 28.47 

1984 Nov 11  

0439   90.87 311 x 322 x 28.48  
 1156:18  Phasing 2m/s 
 1214   90.92 312 x 327 x 28.48 
 1410? NSR (OMS 18s) 10m/s   
 1429   91.25 326 x 344 x 28.48  
 1952:54 RCS Phasing 0.8m/s  91.28 328 x 346 x 28.47  
  NH-1 (OMS 13s) 7m/s 
  NC3-1 (OMS RH 13s) 3.7m/s 
1984 Nov 12  1019   91.65 344 x 366 x 28.47  
 1152?  TI-1 (OMS RH 11s) 2.9m/s 
 1203   91.75 351 x 369 x 28.47 
 1256  MC3, range 2 km 
 1258  Closed inner hatch 
 1302  Rendezvous Palapa B2, 1.7 km, rate 3m/s 
 1304  EVA-1 Allen, Gardner  91.78 352 x 371 x 28.48  
 1304  Go to depress 
 1307  5 psi 
 1313  Depress, Al at vac  
 1317  HO  
 1321  Closing at 0.2m/s 
 1330?  Egress 
 1336 0.1m/s, range 70m on Vbar; Joe at MMU 
 1340? Flying MMU 
 1341  OV range to Palapa 42m 
 1341  MMU launch bolts release 
 1339? Step 1: Allen/EMU1051 dock with MMU 3/Port FSS 
 1346  Step 2: EMU1052? remove ACD from PLT and attach to EMU1051/MMU3 
 1356  Step 3: ACD/Allen/EMU1051/MMU 3 undock Port FSS 
 1356  Allen flying MMU with stinger, test flight 
 1418  MMU free flight 
  MMU/ACD recovery of Palapa B2 
 1440  Step 4: MMU/EMU/ACD dock Palapa  
 1443   Hard dock  
 1453  Step 5: RMS grapple MMU/EMU/ACD/Palapa at ACD  
 1456? Step 6: EMU 1052 remove ABS from PLT 
 1509  Step 7: EMU 1052 attempt to install ABS on Palapa, fails 
 1518  Step 8: Omni antenna removed 
 1550  ABS work completed
 1601  EMU 1052 restow ABS on PLT? 
 1605  Step 9: MMU-3/EMU1051 undock ACD/Palapa/RMS 
 1607  MMU3 into FSS? 
 1613  Step 10: MMU-3 parked on FSS 
 1618  MMU-3 secured on Port FSS and power off 
 1618  Step 11: EMU 1051/Allen off MMU-3 
 1625  Allen in RMS foot restraint 
 1636? Step 12: EMU1051/Allen manual hold of ACD/Palapa/RMS  
 1638  Step 13: RMS ungrapple ACD/Palapa/EMU1051, ALlen now holding 
 1642  Step 14: Gardner/EMU1052 removes ACD (stinger) from Palapa/EMU 
 1652  Step 15: ACD stowed on PLT 
 1704? Step 16: 'Shower cap' cover placed on nozzle 
 1728  Step 17: SAS adapter ring removed from pallet 
 1738  Step 18: SAS installed on Palapa/EMU1051 
 1744Step 19: EMU1051/Allen lower Palapa/SAS to PLT 
 1753  Grounding strap added 
 1759?  Allen release Palapa after 77 min [79min?]  
 1812:42  Palapa B2/SAS berthed and latched on PLT 
 1820  A-frame and MMU closeout 
 1903?  Ingress 
 1910?  HC? 
 1925  EVA-1 HC (SCU?) 91.77 352 x 371 x 28.48  
 1927:38 Repress 

1984 Nov 13  

0905?  NC-1-2 (OMS 9s) 4.7m/s 
 1030   91.62 345 x 363 x 28.46 
 1534?  NC2 burn 
 1659   91.63 344 x 364 x 28.46 
1984 Nov 14  0417   91.62 344 x 363 x 28.47 
 0759   91.62 343 x 363 x 28.47 
 0810?  NC3 burn 

0940  TI-2 (OMS LH 12s) 3.2m/s 
 1005  MC burn 
 1043  Close internal hatch 
 1057  Airlock at vac  
 1058  HO  
 1100?  Rendezvous with Westar 6 
 1108  Set PT timer zero 
 1108  EVA-2 start (STSMR) 
 1115  Egress 
 1116  EVA-2, Allen, Gardner  91.77 353 x 369 x 28.47 
 1120? MMU checkout 
 1127? Step 1 : EMU 1052 (Gardner) attached to MMU 2/Stbd FSS 
 1130?  Step 2: EMU1052/MMU2 undock Stbd FSS 
 1130  Range 10m 
 1130  Step 3: Unstow A-frame and ACD stinger from PLT 
 1130? MMU flying 
 1135?  Step 4 - Attach ACD to MMU2/EMU1052 
 1153  MMU2/EMU/ACD Gardner flying in bay 
 1204  Stinger flight check 
 1217  Westar on V-bar 
 1225  MMU leave bay 
 1230  Begin Westar contact 
 1232  Step 5: MMU2/EMU1052/ACD/Gardner hard dock Westar  
 1244  Joe getting on RMS? 
 1253  EMU1051/Allen and MFR on RMS 
 1300? Step 6: RMS/EMU1051/Allen hold Westar/ACD/EMU1052/MMU2 for 88 min 
 1304  Step 7: MMU2/EMU1052 undock ACD/Westar 
  (ACD/Westar still held by Allen/RMS) 
 1308? Step 8: MMU2/EMU1052 dock Stbd FSS 
 1310? Step 9: EMU1052/Gardner leave MMU2/FSS 
 1327? Step 10: EMU1052/Gardner remove ACD from Westar 
 1335? Step 11: Stow ACD on PLT 
 1355?  Nozzle cover? 
 1357  Step 12: EMU 1052 remove SAS base adapter from PLT  
 1412  Step 13: EMU 1052 soft dock SAS on Westar/EMU1051/RMS 
 1428?  Allen release Westar after 88 min ? 
 1442  SAS Base adapter on 
 1459  Step 14: RMS/EMU1051 berth Westar/SAS on PLT 
 1515  Omni removed from Westar  
 1534  Omni stowed 
 1545? Allen off RMS? 
 1550? Stowing MFR 
 1608  End of MMU closeout 
 1643  Ingress 
 1646  Thermal cover closed 
 1651  EVA-2 end (STSMR) 
 1658  Hatch closed 
 1659  Repressed to 5 psi 
 1709  Repressurized  
 1723  RMS stowed 
 1933   91.77 353 x 369 x 28.46 
1984 Nov 16  0735PLBD closed  91.77 352 x 370 x 28.46 
 1055:00  OMS DO (184s) 101m/s 
 1058:04  OMS DO CO 
 1128:59  Entry 
 1159:56  Landed RW15 KSC 
 1200:09  NGTD 
 1200:54  Wheels stop 
 1425Tow to OPF/2 

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