1997-004A
Discovery was launched in Feb 1997 on the second HST Servicing Mission. Reaching almost 600 km in altitude, OV-103 closed in on Hubble over a couple of days. Steve Hawley, who had released the observatory using RMS 301 on Discovery in 1990, captured the satellite with the same RMS arm on Feb 13. Hawley quickly installed HST on its mounting point on the Flight Support System in the aft cargo bay.
On Feb 14 Mark Lee and Steven Smith entered the external airlock for the first EVA. This was the first time an ODS airlock had been carried at the front of the cargo bay and the first time a spacewalk was made from the ODS hatch. The ODS has two hatches, one on top used to go through the docking system, and one at the rear which on Mir missions leads to the Spacehab module. The rear hatch was used on this mission.
As the ODS was depressurized from 10 psi to 5, the +V2 solar array on HST was observed to suddenly slew 40 degrees. It was later realized that escaping air from the airlock had hit the panel; a density spike on the FOS instrument was recorded at the same time. The airlock was held at 5 psi while the situation was discussed. One orbit later the depress was resumed; the astronauts had been ahead of schedule so the delay was not serious.
Once in the payload bay, Lee and Smith spent some time setting up equipment, and then removed the GHRS instrument from Hubble's aft compartment, replacing it with the new STIS imaging spectrograph. GHRS was stowed in STIS's container on the ORUC Spacelab pallet. Next, the NICMOS infrared camera/spectrograph, carried up in the SAC carrier, replaced the old FOS ultraviolet spectrograph, giving HST an infrared capability for the first time.
The second EVA, on Feb 15, featured installation of the replacement Fine Guidance Sensor used to guide HST accurately. A tape recorder, ESTR-2, was also replaced in equipment bay 8. EV crew member Tanner used Smith's spacesuit, the first time such sharing had been done (leg and arm components had to be switched).
The third EVA was on Feb 16. After depress, hatch opening was delayed briefly while problems with Lee's suit were resolved. The astronauts entered the bay; this time Lee went on the RMS. He removed a DIU interface box and replaced it. Then Smith came onto the RMS and installed a new solid state data recorder in equipment bay 5. Finally, a reaction wheel gyro assembly was replaced. The astronauts inspected damaged multi-layer insulation (MLI) and found that it could not be easily repaired with Kapton tape. The orbit was again raised.
The fourth EVA saw replacement of solar array drive electronics, add protective covers over the magnetometers near Hubble's aperture, and install MLI blankets on damaged areas at the aperture end. The spacewalkers were Harbaugh and Tanner.
The fifth and final EVA was devoted to further repairs on the insulation. Lee and Smith completed the job in two and a half hours, but then HST engineers noticed a possible problem in a reaction wheel assembly which could have required the astronauts to replace it. The spacewalkers were told to return to the airlock and remain there while the problem was analysed. Eventually it was decided not to decide that day, retaining the option for a spacewalk the following day (an option which was not used). Lee and Smith returned to the payload bay briefly to stow the Manipulator Foot Restraint which had spent the week attached to the remote manipulator system, and complete their payload bay cleanup; they then went back to the airlock and repressurized, completing the repair activities for the mission. A final orbital reboost soon followed.
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| STS-82 |
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| Date | Time | Event | Orbit |
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| 1997 Feb 11 | 0855:17 | Launch STS-82 | KSC LC39A |
| | 0857:20 | SRB sep |
| | 0903:46 | MECO |
| | 0903:56 | ET sep | 57 x 572 x 28.5 |
| | 0939:50 | OMS-2 2:52 83.9m/s | 350 x 579 x 28.5 |
| | 0942:43 | OMS-2 CO |
| | 1015? | PLBD checkout partial open/close |
| | 1037 | PLBD open |
| | 1422:34 | OMS-3 1:14 36 m/s | 480 x 579 x 28.5 |
| | 1423:48 | OMS 3 CO |
| 1997 Feb 12 | | RMS checkout |
| | 1231:38 | OMS-4 NSR 56s 29m/s | 576 x 584 x 28.5 |
| | 1232:35 | OMS 4 CO |
| | 1357:17 | NC2 RCS 13s 1m/s |
| 1997 Feb 13 | 0201:21 | OMS-5 NH burn 8s 4m/s |
| | 0201:03 | OMS-5 CO |
| | 0248:17 | NC3 burn RCS 1m/s 14s | 96.51 589 x 593 x 28.5 |
| | 0355:41 | NPC-2 RCS 0.2m/s 2s |
| | 0503:03 | NCC RCS 0.4m/s 1s |
| | 0524 | RMS power up |
| | 0528 | Range to HST 20 km |
| | 0531 | RMS uncradle |
| | 0603:09 | TI burn, 1m/s 12s mass = 105917 kg | 96.57 589 x 598 x 28.5 |
| | 0629 | MCC 1 |
| | 0658 | MCC 2 6s, 6 km range |
| | 0707 | MCC 3, 3s |
| | 0717 | MCC 4, 1.2 km range |
| | 0722 | On HST -R-bar | 589 x 598 x 28.5 |
| | 0833:53 | RMS grapple HST |
| | 0904 | Berthed and latched on FSS |
| | 0912:13 | Berthing complete |
| | 0914 | RMS ungrapple |
| | 0920 | RMS survey of HST | 96.57 589 x 598 x 28.5 |
| | | RMS extended park position |
| 1997 Feb 14 | | EVA-1 |
| | 0244 | Airlock in depress to 5 psi |
| | 0245 | HST Solar array moves due to depress air; EVA postponed. |
| | 0415 | Resume depress |
| | 0429 | Depressurized, EVA begins (JCM) | 96.56 590 x 597 x 28.5 |
| | 0429:53 | AL depress complete (NASA) |
| | 0434 | EVA begins (NASA) |
| | 0435 | Slew +V2 array back to horizontal |
| | 0440? | Hatch open; Lee egress |
| | 0445 | Smith egress to bay |
| | 0454 | RMS grapple MFR |
| | 0507 | Smith on RMS |
| | 0548 | Open HST compartment |
| | 0619 | GHRS removed from HST |
| | 0633 | GHRS parked on ORUC |
| | 0640 | STIS removed from ORUC SIPE |
| | 0724 | STIS installed in HST |
| | 0750 | GHRS placed in ORUC SIPE |
| | 0810? | FOS removed from HST |
| | 0826 | FOS parked on ORUC |
| | 0830 | NICMOS removed from SAC SIPE |
| | 0900 | NICMOS installed in HST |
| | | Install cryo vent line on NICMOS |
| | 0940 | HST aft shroud closed |
| | 1016 | HST aft shroud latched |
| | 1050 | FOS placed in SAC SIPE |
| | 1116 | Hatch closed |
| | 1116:32 | Repress |
| 1997 Feb 15 | | EVA-2 Harbaugh, Tanner |
| | 0250 | Begin depress |
| | 0321 | EVA depress (JCM) |
| | 0323:11 | AL depress complete (MR) |
| | 0325 | EVA begins (NASA) |
| | 0332 | Egress |
| | 0400 | Tanner on RMS |
| | 0500 | FGS-1 removed |
| | 0510 | FGS-1 on ORUC fixture |
| | 0522 | FGS-1R removed from FSIPE |
| | 0541 | FGS-1R installed |
| | 0650 | FGS-1 in FSIPE |
| | | ESTR-2 removed |
| | 0740 | ESTR-2R removed from contained |
| | 0800 | ESTR-2R installed |
| | | Survey of solar array damage |
| | 0850 | Harbaugh on RMS |
| | 0900 | OCE-EK installation, Bay C |
| | | Orbit raise 22 min |
| | 1044 | Hatch closed |
| | 1051 | End of EVA (NASA) 7:26 |
| | 1053:01 | Repress, end of EVA 7:30 |
| | 1502:19 | VRCS reboost, avoid 94-029 debris. 10 min |
| 1997 Feb 16 | | EVA-3 Lee, Smith |
| | 0250:56 | AL depress complete |
| | 0251? | Depress |
| | 0253 | EVA begins (NASA) | 96.56 589 x 597 x 28.5 |
| | | Lee on RMS |
| | 0430 | DIU removed |
| | 0550 | new DIU installed |
| | 0640? | SSR work |
| | 0745? | SSR installed |
| | 0800? | RWA installed |
| | 0850? | RWA complete |
| | | MLI damage inspection |
| | | Hatch closed |
| | 1003:37 | Repress 7:13 |
| | 1010:16 | VRCS reboost 2 | |
| | 1030:03 | RCS complete |
| | 1200 | | 86.76 597 x 608 x 28.5 |
| 1997 Feb 17 | 0340 | EVA-4 Harbaugh, Tanner |
| | 0343:24 | Depress complete |
| | 0345 | EVA start, NASA |
| | 0351 | Hatch open |
| | 0410 | Harbaugh on RMS |
| | 0420 | begin SADE repair |
| | 0645 | Done SADE repair |
| | 0757 | MSS cover repair complete |
| | 0805 | Begin insulation repairs at top of HST |
| | 0920 | Insulation repairs complete |
| | 0937 | Harbaugh off RMS |
| | 1014 | Hatch closed | 96.75 597 x 608 x 28.5 |
| | 1019:32 | Repress, end of EVA |
| 1997 Feb 18 | | EVA-5 Lee, Smith |
| | 0305 | Depress | 96.75 597 x 608 x 28.5 |
| | 0312:42 | Depress complete (MR) |
| | 0315 | NASA EVA start |
| | 0320 | Hatch open |
| | 0330 | Lee on RMS |
| | 0336 | MLI insulation repairs |
| | 0545 | Repairs complete |
| | 0627 | Ingress, hatch closed |
| | 0733 | Hatch open, egress |
| | 0749 | Remove MFR from RMS |
| | 0823 | Ingress, Thermal cover closed |
| | 0827 | Hatch closed |
| | 0829 | O2 to press |
| | 0831:28 | Repress |
| | 1028 | Reboost VRCS 32 min |
| | 1100 | Reboost-3 complete |
| | 1245 | | 96.88 598 x 619 x 28.5 |
| 1997 Feb 19 | 0321:09 | RMS grapple HST | |
| | 0502:56 | RMS unberth HST |
| | 0557 | Open HST aperture door |
| | 0641:21 | Release HST |
| | 0642:06 | SEP1 0.4m/s 5s |
| | 0717 | SEP2, 0.4m/s 5s 300m range |
| | 0758 | SEP-2A 0.4m/s 5s |
| | 1059 | | 96.86 598 x 618 x 28.5 |
| | 2200 | | 96.86 598 x 617 x 28.5 |
| 1997 Feb 20 | 0841 | RCS perigee lower, 4m/s 52s | 96.70 583 x 617 x 28.5 |
| 1997 Feb 21 | 0308 | Close PLBD | |
| | 0721:54 | OMS DO 4:59 153.8m/s | 52 x 611 x 28.5 |
| | 0726:53 | OMS cutoff | 57 x 616 x 28.5 (TLE) |
| | 0801 | Entry interface 122 km |
| | 0832:26 | Landed RW15 KSC |
| | 0832:37 | NGTD |
| | 0833:24 | Wheels stop |
