1990-090A
STS-41 deployed the Ulysses probe. After a last-minute hold at T-31s launch took place at 1147 UTC on 1990 Oct 6. On Oct 7 the crew executed the OMS-4 burn to phase the orbit for improved landing conditions.
DTO 827, a test of the digital autopilot's ability to operate at high pitch rates, ran into cross-coupling problems and was terminated after 40s after using up 137 kg of RCS fuel.
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| STS-41 |
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| Date | Time | Event | Orbit |
|---|
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| 1990 Aug 27 | | Tow to VAB |
| 1990 Aug 28 | | ET mate |
| 1990 Sep 5 | | Rollout | LC39B |
| 1990 Oct 6 | 1147:15 | Launch from LC39B |
| | 1149:19 | SRB sep |
| | 1155:46 | MECO | 65 x 291 x 28.5 (PK) |
| | 1156:03 | ET sep | 88.17 72 x 294 x 28.5 (OMS dV) |
| | 1227:08 | OMS-2 (2:25) 68.1m/s |
| | 1229:32 | OMS-2 CO |
| | 1300 | | 90.51 295 x 302 x 28.5 |
| | 1311 | PLBD open |
| | 1707 | Tilt table deploy |
| | 1748:15 | ULS/IUS/PAM-S deploy |
| | 1749:13 | RCS sep 1 |
| | 1803 | OMS-3 sep burn 23s |
| | 2030 | | 90.83 300 x 329 x 28.5 |
| 1990 Oct 7 | 1043:53 | OMS 4 phasing, 44s 12m/s |
| | 1100 | | 90.39 285 x 301 x 28.5 |
| | 1407 | RMS uncradle |
| | 1522 | RMS parked for ISAC |
| 1990 Oct 9 | 0600 | | 90.38 283 x 303 x 28.5 |
| | 1502 | RMS cradle |
| 1990 Oct 10 | 1020 | PLBD closed |
| | 1300:05 | OMS DO (2:38) 90.4m/s | 90.37 281 x 303 x 28.5 |
| | 1302:33 | OMS DO CO | -3? x 285 x 28.5 |
| | 1326 | Entry |
| | 1357:18 | Landing RW22 EAFB |
| | 1357:32 | NGTD |
| | 1358:10 | Wheels stop |
| 1990 Oct 15 | 1230
| SCA takeoff | EAFB |
| | 1715 | SCA landing | Sheppard AFB TX |
| | 1900 | SCA takeoff |
| | 2140 | SCA landing | Eglin AFB FL |
| 1990 Oct 16 | 1055 | SCA takeoff |
| | 1140 | SCA landing | KSC SLF |
| 1500 | Tow to OPF/1 |