Saturday, December 19, 2009

STS-103 (Discovery)

 1999-069A


Launch mass is 113881.9 (112563 in retrospective data). Sep mass of ET is 109965.3 kg. 3 EMUs carried. TCS. One HST-PFR in 13P and one on the FSS.

EVAs were carried out through the axial (longitudinal) hatch on the EAL. On the first EVA, the astronauts replaced HST's 6 gyros, the crucial mission task. Next, they fought with the valve covers on the NICMOS vents; they had planned to open the valves by hand and with a power ratchet tool, but in the end they had to go and get a pistol grip tool to remove the covers. The vents open, any remaining N2 will be vented by the time the new neon cooling system is installed on SM-3B. One of the old gyros wouldn't fit properly in the COPE at first, but eventually the crew managed to shove it in. The third task on EVA 1 was installation of Voltage Improvement Kits intended to prolong the life of the spacecraft's batteries. The walk was extended to allow the crew to install all six kits.

EVA-2 saw the installation of an Intel-486 based computer in the spacecraft.

During prep for EVA-3, Grunsfeld's suit had a problem, so he wore Foale's suit instead. On EVA-3, two bays were covered with the new outer blanket layers. There wasn't time to cover four more bays, so that was left for SM-3B.

 


STS-103 
 

DateTimeEventOrbit  

1999 Nov 4  1500  Roll from OPF/1 to VAB/1 
1999 Nov 5   Mate to ET in VAB/1 
1999 Nov 13  1227  Roll to LC39B 
1999 Dec 16   Scrub at T-11h 
1999 Dec 17   Scrub 
1999 Dec 20  0050:00  Launch  KSC LC39B 
 0052:04  SRB sep 
 0058:26  MECO  90.89 56 x 587 x 28.5 
 0058:45  ET-101 sep 
 0134:08  T+44:00 OMS-2 2:33 75.2m/s  313 x 579 x 28.5 
 0136:41  OMS 2 CO 
 0149   93.63 320 x 583 x 28.5 
 0230 PLBD open 
 0615:30 OMS-3 NC-1 91s 46m/s 
 0617:02 OMS-3 CO 
 1400   95.32 484 x 583 x 28.5 
 1930s RMS tests 
1999 Dec 21  0431:20 OMS-4 NSR 47s 24m/s 
 0432:08  OMS-4 CO 
 0432:23  RCS NC-1 trim  0.4s 
 0526:49 RCS NC-2 31s 2m/s 
 0527   96.28 570 x 589 x 28.5 
 1826:22  OMS-5 R NC-3 20s 5m/s 
 1826:42  OMS-5 CO 
 1826:55 NSR trim 0.2s 
 1914:34 OMS-6 L NH 17s 4m/s 
 1914:51  OMS-6 CO 
 2128:00 RCS NCC 1s 
 2228:06 TI 9s, 1.3m/s, mass 104144 kg 
 2248:06  MC-1 2s 
 2322:58 MC-2 5s 
 2339:58 MC-3 2s 
 2349:58 MC-4 7s 
1999 Dec 22  0002  On -Rbar at 207m 

0034:01  Grapple 591 x 610 x 28.5 
 0133  Berth on FSS 
 0142:00 Latched 
 0203  On external power 
 0208  RMS ungrapple 
 0600   96.71 591 x 610 x 28.5 
 1838  Depress at 1psi 
 1841:37  EVA depress end 
 1852? HO (TC closed), axial hatch 

1854  EVA-1 on battery (Smith, Grunsfeld) 
 1901  Thermal cover open 
 1902  Egress EV1 
  Grunsfeld on RMS 
 2018  Prep to change RSU2 
 2050? RSU-2R out of ORUC 
 2119  RSU-2 removed 
 2130? RSU-2R installed 
 2135? RSU-2 in ORUC 
 2135  RSU-3R out of ORUC 
 2156  RSU-3 removed 
 2210? RSU-3R installed 
 2215?  RSU-3 in ORUC 
 2215?  RSU-1R out of ORUC 
 2235  RSU-1 removed 
 2243  RSU-1R installed 
 2250? RSU-1 in ORUC 
  Difficulty closing RSU-1 in box 
 2250  Attempt to open NICMOS valves 
 2333  Second attempt 
1999 Dec 23    
 0006  NICMOS cooling valves opened 
 0108  Begin Voltage Improvement Kit work 
 0129  VIK 1-3 into Bay 3 
 0150  Begin VIK 4-6 into Bay 2  
 0208  VIK install complete 

0252  Ingress 
 0258  Thermal cover closed 
 0302  Hatch closed 
 0306  Repress begins  
 0309:28 Begin repress (STS MR) 

0310  EVA-1 off battery, 8:15 
 0310  Repress, NASA dur 8:15:10, JCM dur 8:32 
  EVA-2 Foale, Nicollier  
 1828  Depress begins 
 1845  Airlock at 2psi : DEPRESS? 
 1852:33 Depress complete (MR) 
 1855  Depressurized at 0.2psi 
 1900  Hatch open 
 1905:56 EVA-2 on battery 
 1913  Thermal cover open, egress 
 1938 Foale on RMS 
 2015  DF-224 computer removed 
 2045?  DF-224 stowed 
 2050? HST-486 out of ORUC 
 2120 HST-486 computer installed 
 2200?  Foale off RMS, Nicollier on RMS 
 2341  FGS-2R removed from HST 
 2357  FGS-2 out of ORUC 
1999 Dec 24  0043 FGS-2 installed in HST 
 0140?  FGS-2R stowed in ORUC 
 0303  Ingress; dur 7:50  
 0307  HC; dur 8:07 
 0311  Begin repress, on orbiter power 
 0316:19  Repress : NASA dur 8:10 JCM depress dur 8:31  
  EVA-3 Grunsfeld, Smith 
 1848  Go for depress 
 1909:51 Depressurized (MR) 
 1915? Inner hatch open  
 1917  Depress complete 
 1917  On battery EVA-3 
 1926  Thermal cover open 
 1927  Egress 
  Grunsfeld on RMS 
 2200   96.71 590 x 610 x 28.5 
  NOBL layers added 
1999 Dec 25  0202  Off RMS 
  Rotate telescope 
 0255  Ingress 
 0301 Thermal cover closed 
 0307 Hatch closed 
 0318 Grunsfeld EMU failed to switch to OV power 
 0325:48 Repress 8:08 NASA; JCM 8:15 

 
 2000:30  RMS grapple HST 
 2118:41  HST unberth 
 2303:01 Release T+6:21:28 
 2303:45 Sep-1 RCS 5s 0.4m/s 
 2338:54 Sep-2 RCS 5s 0.4m/s 
1999 Dec 26  2108:30  RCS adjust 95s 7m/s lower peri 28km 
1999 Dec 27  0600   96.40 562 x 609 x 28.5 

1827  PLBD closed 
 2248:26 Deorbit 4:49 157m/s  50 x 616 x 28.4 
 2253:15  OMS DO CO 
 2329:41  Entry Interface 
1999 Dec 28 0000:47 MGTD KSC RW33 7:23:10:47 
 0000:58 NGTD 
 0001:34 WS 

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