1996-032A
The STS-77 launch was the first with three Block I SSMEs, and the first with control from the new Houston MCC during the launch phase. The mission carried a materials processing furnace in the Spacehab module, the Spartan 207 inflatable antenna experiment, a GAS Bridge, and the TEAMS technology experiment bridge.
On May 20 the Spartan was deployed, and two hours later IAE was inflated. Doors on the Spartan bus opened to release the antenna, allowing the dish to move out. A spring loaded platform had been intended to push out the antenna, but the struts pushed it out early and inflation began 50 sec later. The inflation was successful, although some minutes later the IAE/Spartan began to tumble in pitch.
The PAMS STU satellite was deployed on May 22. Four hours later, OV-105 came back for a first rendezvous to observe it, 600m behind PAMS to avoid disturbing it with the Orbiter's wake.
By the third rendezvous on May 27, STU had stabilized itself successfully, confirming theoretical expectations. The laser measurement devices on the TEAMS bridge successfully acquired STU for the first time. Also on May 27, Endeavour passed close to Mir and Casper exchanged pleasantries with EO-21 Flight-Engineer-2 Shannon Lucid.
| STS-77 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1996 Apr 8 | Roll from OPF3 to VAB | ||
| 1996 Apr 9 | ET mate | ||
| 1996 Apr 16 | Roll to LC39B | ||
| 1996 May 19 | 1030:00 | Launch by STS | KSC LC39B |
| 1032:04 | RSRM-47 sep | ||
| 1038:29 | MECO | ||
| 1038:47 | ET-78 sep | 82 x 283 x 39.0 (OMS dV) | |
| 1111:47 | OMS 2 2:06 60.5 m/s | ||
| 1113:53 | OMS 2 CO | ||
| 1200 | 90.22 280 x 290 x 39.01 | ||
| 1212:28 | PLBD open | 280 x 290 x 39.0 | |
| 1519 | RMS checkout complete | ||
| 1535 | RMS payload bay survey | ||
| 1996 May 20 | 0600 | 90.21 279 x 290 x 39.02 | |
| 1030? | Spartan 207 unberth | ||
| 1129:12 | Spartan 207 deploy | ||
| 1131:16 | SEP S-1 OV-105 back off to 120m | ||
| 1404 | OV-105 back off | ||
| 1415 | OV-105 stationkeep at 230 m | ||
| 1452 | OV-105 back off | ||
| 1500? | OV-105 stationkeep at 900 m | ||
| 1559 | RMS cradle | ||
| 1996 May 21 | 0600 | 90.20 278 x 289 x 39.02 | |
| 0948 | Ku-band acquires Spartan at 36km | ||
| 1202 | 90.19 278 x 288 x 39.0 | ||
| 1440 | Rendezvous with Spartan | ||
| 1452:47 | RMS grapple Spartan | ||
| 1555:41 | RMS berth Spartan | ||
| 1996 May 22 | 0919 | PAMS STU deploy | |
| 0943 | Sep burn | ||
| 1140 | Rendezvous burns | ||
| 1200 | 90.17 278 x 287 x 39.01 | ||
| 1354:05 | Rendezvous 1 with STU, 600m trailing | ||
| 1600 | End rendezvous 1 | ||
| 1996 May 23 | Rendezvous burns | ||
| 1200 | 90.19 280 x 286 x 39.01 | ||
| 1500 | 90.17 276 x 288 x 39.01 | ||
| 1800 | 90.19 280 x 287 x 39.01 | ||
| 1996 May 24 | 0600 | 90.16 276 x 288 x 39.01 | |
| 1996 May 25 | 0500 | 90.16 277 x 287 x 39.01 | |
| 0512:00 | RCS 0.6m/s Rendezvous circ burn | ||
| 0544 | NCC Rendezvous burn | ||
| 0640 | TI burn | ||
| 0725 | MC1 | ||
| 0735 | MC2 | ||
| 0800 | Rendezvous 2 at VBN (V-bar Null), 600m | ||
| 1430s | End rendezvous 2 | ||
| 1996 May 27 | 0518 | RV-3 NC burn 0.6m/s | |
| 0802:33 | Rendezvous 3 with STU, 730 m | ||
| 1502 | End rendezvous 3 | ||
| 1545 | Sep burn 1.8 m/s | 90.15 277 x 286 x 39.0 | |
| 1996 May 29 | 0730:09 | PLBD closed | 90.10 274 x 284 x 39.0 |
| 1009:30 | Deorbit 3:28 107.8m/s | ||
| 1012:58 | OMS DO CO | -75 x 276 x 39.0 | |
| 1037:39 | Entry interface 122 km | ||
| 1109:24 | MGTD KSC RW33 (10d 0h 39m 24s or 18s) | ||
| 1109:26 | Chute out | ||
| 1109:33 | NGTD | ||
| 1109:56 | Chute sep | ||
| 1110:11 | Wheels stop | ||
| 1550 | Tow to OPF/3 | ||
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