Sunday, August 27, 1995

STS-51-I (Discovery)

 1985-076A


During EVA-1, Van Hoften captured Leasat 3. The satellite was safed by stowing the sep lever, installing two shorting plugs, and installing two safe-and-arm pins. The theta=135 and theta=90 closeout plates and connector flight caps were removed. SBU (Spun Bypass Units) harness connectors were mated and SBU plates and flight caps were installed. The RPU (Remote Power Unit) and RPU harness connections were attached, and the RDU (remote decoder unit) relays were enabled. The omni-antenna squibs were fired and the omni antenna was deployed. The despun caps and closeout plates were reattached.

On EVA-2, the PKM nozzle cover was removed and a new one installed. The safe-and-arm pins were removed, the SBU and timers were powered up, the grapple and handling bar was removed, and the spin-up bar was installed. Van Hoften then spun up the satellite to 2.7 rpm and released it. The spin rate was later increased to 24 rpm by ground command.


STS 51-I 
 

DateTimeEventOrbit  

1985 Jul 30   Tow to VAB 
1985 Aug 6   Rollout  LC39A 
1985 Aug 27  1058:01  Launch from LC39A 
 1100:02  SRB sep at 47.1 km 
 1106:29  MECO at 110.2 km 
 1106:47  ET sep at 112.4 km  88.64 63 x 351 x 28.5 
   88.65 56 x 359 x 28.5 
 1138:22  OMS-2 (3:03) 85m/s  91.61 347 x 359 x 28.50 
 1141:25  OMS-2 CO 
 1232  PLBD open 
 1300  Aussat sunshade partial open 
 1438   91.64 351 x 357 x 28.59 
 1515  RMS to push sunshield open 
 1548  RMS opened sunshield 
 1616  RMS cradle 
 1733:15  Aussat-1 deploy 
 1748  OMS-3 (LH 13s) 3m/s  91.75 351 x 368 x 28.55 
 2207:34  ASC-1 deploy  91.72 350 x 367 x 28.55  
 2216OMS-4 (RH 13s) 3m/s sep   
1985 Aug 28  0025   91.86 351 x 380 x 28.55 
1985 Aug 29  1048:55  Leasat 4 deploy 
 1058OMS-5 (10s) sep 4m/s  
 1200   92.02 351 x 395 x 28.55 
 1630OMS-6 (RH 40s) 11m/s rv burn 
 1745OMS-7 (RH 10s) 3m/s rv burn 
 1757   91.67 314 x 398 x 28.54 
 1922OMS-8 NSR (26s) 15m/s 
1985 Aug 30  0118   91.67 314 x 398 x 28.54 
 0616   91.66 314 x 398 x 28.5 
   91.85 313 x 417? x 28.5 
  OMS-9 (RH 19s) 5m/s  91.85 313 x 417? x 28.5 
 1030 92.03 313 x 434? x 28.5 
 1048OMS-10 (LH 15s) 4m/s TI92.18 313 x 449 x 28.5 
 1210Perigee burn
 1750?  NC2 burn  
1985 Aug 31  
 0718Coelliptic burn  
 0835NC5 burn  
 1014TI  
 1130Range 5.4 km 
 1145  Airlock depress begins

1211EVA-1 Van Hoften, Fisher 
 1220  Leasat 3 rendezvous  92.18 313 x 449 x 28.53 
 1235  In foot restraint 
 1250? Unstow capture and handling bars 
 1257  Unstow grapple bar 
 1305  MS2 on RMS, to Leasat 
 1400  MS2 captures Leasat, installing capture bar? 
 1414  Handling bar in right hand 
 1415  Install handling bar 
  Remove capture bar 
 1428  Install grapple bar 
 1502  RMS grapple Leasat (transcript) 
 1518  RMS grapple Leasat  
  Leasat repairs 
 1610  Removing screws 
  Install safe and arm pins 
 1626? Install SBU 
 1800? Despun test access panel removed 
 1805? RPU harness mated 
 1808 Omni antenna deployed 
  RPU cover plate installed 
 1854  PLB cleanup complete 
 1900? Ingress 
 1912  HC  
 1920  EVA repress 
1985 Sep 1  1123   92.18 313 x 448 x 28.5 

1200  EVA-2 depress (04:26) 
 1214  Crew outside 
  Leasat repairs 
 1230?  Spinup bar unstowed from BSA 
 1320?  Old PKM cover removed 
 1327? New PKM cover installed 
 1338 SBU timers set 
 1406? Ox holding LEASAT 
 1408?  RMS ungrapple LEASAT  
 1414  RMS grapple foot restraint 
 1430? Grapple bar removed 
 1436  Spinup bar installed 
 1501  Handling bar removed 
 1509  MS2 deploy Leasat  92.17 313 x 448 x 28.53 
 1515?  RCS 1m/s sep burn at peri? 
 1627  Ox at airlock 
 1628  Cradle RMS 
 1634? Closing hatch? 
 1641  Repress (offl. 04:26) 
 1643  Water off 
 1656  Airlock at 10psi 
 1819   92.22 313 x 453 x 28.5 
1985 Sep 2  0900?  OMS-11 (RH 16s) 4m/s burn at apogee? 

1937   92.40 329 x 454 x 28.5 
1985 Sep 3  0800 92.40 328 x 455 x 28.5 

1025PLBD closed 
 1211:01 OMS DO (251s) 145m/s 
 1215:10 OMS DO CO 
 1245:20  Entry 
 1315:43 Landed RW23 EAFB 
 1315:51 NGTD 
 1316:30  Wheels stop 
1985 Sep 7  1330  SCA takeoff  EAFB 
 1825SCA landing  Kelly AFB TX 
1985 Sep 8  1145SCA takeoff  Kelly  
 1530  SCA landing  KSC SLF 
 1900OPF/1 

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