1995-048A
The discovery of heat erosion on O-rings in the SRB nozzle joints for STS-71 and STS-70 delayed the STS-69 launch while repairs were made to the joints on the pad by the addition of new RTV sealant putty. After further delays the launch took place on Sep 7 despite a poor weather forecast, with high seas due to Hurricane Luis further east.
The payload bay carried the Wake Shield Facility and three MPESS class payloads, Spartan 201, IEH-1 and CAPL/GBA. Launch finally came on 1995 Sep 7. Spartan was deployed on Sep 8; OV-105 maneuvered away and then executed a re-rendezvous on Sep 10. The NCC burn used more prop than expected due to a rendezvous software bug, and the TI burn was off by almost 2 km, but the remainder of the rendezvous proceeded successfully. On arriving at Spartan, it was found in an unexpected orientation; it had entered safemode prior to recovery. Walker and Cockrell executed a slow flyaround to align the RMS with the grapple fixture on Spartan and Gernhardt activated the arm for a successful retrieval almost an hour later than planned. The 370 km orbit was then raised to 400 km for WSF operations. The RMS was moved to grapple WSF late on Sep 10, and left there overnight. The following morning WSF was unberthed and placed over the ram side of the Orbiter to be scrubbed clean. Next, it was moved to the wake side and deployed.
WSF also was safed with systems problems at around 1200 Sep 12 after a day of operations but was restarted at 0800 Sep 13. On Sep 14 Endeavour approached WSF again; at a distance of 80m it began an hour-long series of 14 firings of the RCS jets so that Wake Shield could measure the effect of the jet plumes. WSF was grappled at 1359 UT. Endeavour's orbit was lowered that evening and the next day WSF was unberthed again for CHAWS charging studies. On Sep 16, Voss and Gernhardt entered the payload bay for a spacewalk, EDFT-2, to test out Space Station assembly techniques. On the previous test spacewalk, thermal modifications for low temperature work had proved inadequate, but this time Gernhardt hung in shadow on the end of the RMS arm for almost an hour and felt no significant discomfort; the cooling system on his spacesuit could be disabled and glove heaters were added. Voss used the APFR restraint in bay 2 to work at connectors and cabling in the task board on bay 3.
| STS-69 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1995 spring | OPF/1 | ||
| 1995 Jun 26? | Roll to VAB | VAB | |
| 1995 Jun 29 | Mate with ET | VAB/1 | |
| 1995 Jul 6 | Roll to LC39A | LC39A | |
| 1995 Aug 1 | 1645 | Rollback (Hurricane Erin) | VAB/1 |
| 1995 Aug 8 | Rollout to LC39A | ||
| 1995 Aug 31 | 0730 | Scrub, electrical problem, T-8h | |
| 1995 Sep 7 | 1509:00 | Launch by Shuttle | LC39A |
| 1511:02 | RSRM-48 sep T+2:02.4 | ||
| 1517:30 | MECO T+8:30.12 | ||
| 1517 | ET sep | 65 x 365 x 28.5 | |
| 1550:54 | OMS-2 3:07 90 m/s | 368 x 377 x 28.5 | |
| 1652 | PLBD open | ||
| 1932 | RMS uncradle | ||
| 2235 | RMS recradle | ||
| 1995 Sep 8 | 1439 | RMS uncradle | |
| 1500? | RMS grapple Spartan | 92.02 369 x 377 x 28.5 | |
| 1512:46 | RMS unberth Spartan | ||
| 1542:58 | RMS deploy Spartan | ||
| 1548:55 | RCS SEP1 | ||
| 1620s | RCS SEP2 | ||
| 1924s | NC1 burn | 92.01 369 x 377 x 28.5 | |
| 1995 Sep 9 | 1021 | NC2 burn | |
| 1101 | NH burn had been scheduled | ||
| 1750 | NC3 burn | 91.99 367 x 376 x 28.5 | |
| 1995 Sep 10 | 0915 | NC4 burn | |
| 1125 | NCC burn | ||
| 1219 | TI burn | ||
| 1420 | Rendezvous Spartan | 91.99 368 x 376 x 28.5 | |
| 1502:22 | RMS grapple Spartan | ||
| 1521:17 | RMS berth Spartan | ||
| 1524 | RMS ungrapple Spartan | ||
| 1835:43 | OMS-3L 34s 11m/s | 92.00 368 x 376 x 28.5 | |
| 1921:35 | OMS-4R 29s 7m/s | 92.57 396 x 404 x 28.5 | |
| 2013 | RMS grapple WSF | ||
| 1995 Sep 11 | 0550:53 | RMS unberth WSF | |
| 1125:06 | RMS release WSF | 92.57 396 x 403 x 28.5 | |
| 1995 Sep 13 | 2335 | 92.57 395 x 405 x 28.5 | |
| 1995 Sep 14 | 92.66 402 x 407 x 28.5 | ||
| 0709:18 | NC-11 OMS 5L 10s 3m/s 105661 kg | ||
| 0925 | NCC RCS | ||
| 1016:55 | TI OMS 6R 13s 3m/s 105566 kg | ||
| 1040 | MC1 | ||
| 1107 | MC2 | ||
| 1117 | MC3 | ||
| 1127 | MC4 | ||
| 1230? | Rendezvous with WSF | 92.54 393 x 404 x 28.5 | |
| 14 thruster firings, 90 to 60m range | |||
| 1315? | Begin WSF approach | ||
| 1359:11 | RMS grapple WSF | ||
| 1516:28 | RMS berth WSF | ||
| 1520 | RMS ungrapple WSF | 92.58 396 x 404 x 28.5 | |
| 1647:10 | OMS-7L 63s 16m/s burn lower orbit | 340 x 400 x 28.5 | |
| 1732:21 | OMS-8R 68s 17m/s burn circ orbit | 91.36 337 x 345 x 28.5 | |
| 1995 Sep 15 | 0717 | WSF unberth | |
| 1226 | WSF reberth | ||
| 1995 Sep 16 | 0800 | Begin airlock depress | 91.38 338 x 346 x 28.5 |
| 0805? | Depress (Green book dur) | ||
| 0820 | EVA-1 begin (Voss, Gernhardt) | ||
| 0832 | Hatch open | ||
| 1451 | Ingress | ||
| 1502 | Airlock repress (Off. time 6:46) | ||
| 1522 | AL repress complete | ||
| 1995 Sep 18 | 0759 | Close payload bay doors | 91.37 338 x 345 x 28.5 |
| 1035:13 | OMS deorbit 10/19:26:13.0, 3:36 114m/s | 30 x 341 x 28.5 | |
| 1106:23 | Entry interface | ||
| 1137:56 | Touchdown RW33 KSC (260:28:56) | ||
| 1138:52 | Wheels stop | ||
| 1522 | Tow to OPF/3 | ||
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