Spacewalks
There were four spacewalks (EVAs) completed by three astronauts during the flight. The total time spent outside was 28 hours and 44 minutes. The EVAs are expected to be the final EVAs conducted by a shuttle crew.
| EVA | Spacewalkers | Start (UTC) | End (UTC) | Duration |
|---|---|---|---|---|
| EVA 1 | Drew Feustel Greg Chamitoff |
20 May 2011 07:10 |
20 May 2011 13:29 |
6 hours 19 minutes |
| Feustel and Chamitoff retrieved the two MISSE 7 experiments and installed a new package of MISSE 8 experiments on ELC-2, which was already on the station. They installed jumpers between segments on the left-side truss, or backbone, of the station, for ammonia refills, and vented nitrogen from an ammonia servicer. They also began to install an external wireless communication antenna on the Destiny laboratory to provide wireless communication to the Express Logistics Carriers mounted on the station's truss, but the installation was cut short due to a bad CO2 sensor in Chamitoff's suit. | ||||
| EVA 2 | Feustel Mike Fincke |
22 May 2011 06:05 |
22 May 2011 14:12 |
8 hours 07 minutes |
| Feustel and Fincke refilled the Port 6 (P5) radiators with ammonia. They completed venting the early ammonia system, and lubricated the port solar alpha rotary joint and parts of Dextre, a two-armed space station robot capable of handling delicate assembly tasks currently performed by spacewalkers. Fincke also installed grapple bars on the port radiators. | ||||
| EVA 3 | Feustel Fincke |
25 May 2011 05:43 |
25 May 2011 12:37 |
6 hours 54 minutes |
| Feustel and Fincke installed a grapple fixture (a handle for the station's Canadarm2 to grab on to) on the Zarya module, to support robotic operations based from the Russian segment. They also installed additional cables to provide backup power to the Russian portion of the space station. The pair finished installing the wireless video system that was left unfinished during EVA 1. | ||||
| EVA 4 | Fincke Chamitoff |
27 May 2011 04:15 |
27 May 2011 11:39 |
7 hours 24 minutes |
| Fincke and Chamitoff stowed the shuttle's 50-foot Orbiter Boom Sensor System (OBSS) on the right-side truss on a permanent stowage fixture. The pair then retrieved a grapple from the station's left-side truss and used it as a replacement for the grapple previously on the boom. They then released restraints from one of the spare arms for Dextre and replaced thermal insulation on one of the spare gas tanks for the Quest airlock. The spacewalk marked the completion of the US Orbital Segment of the ISS. | ||||
Read more about this topic: STS-134