The STS-114 crew performed three spacewalks while at the International Space Station. The crew tested techniques for repairing elements of the Space Shuttle's thermal protection system, replaced a Control Moment Gyroscope, or CMG, on the Station and installed an External Stowage Platform.
Image to right: Anchored to a foot restraint on the International Space Station's robotic arm, STS-114 Mission Specialist Steve Robinson participates in the mission's third spacewalk.
EVA Astronauts and Suit ID
Soichi Noguchi, EV1 (red stripes on suit)
Stephen Robinson, EV2 (solid white suit)
Flight Day 5
Start Time: 5:46 a.m. EDT, July 30, 2005
End Time: 12:36 p.m. EDT, July 30, 2005
Duration: 6 hours, 50 minutes
During the first extravehicular activity, the spacewalkers tested some new techniques for replacing or repairing damaged tiles on the Space Shuttle. For the repair demonstration, they worked with tiles and reinforced carbon-carbon intentionally damaged on the ground and brought into space in Discovery's cargo bay. They tested an Emittance Wash Applicator for tile repair and Non-Oxide Adhesive eXperimental (NOAX) for the reinforced carbon-carbon samples.
Flight Day 7
Start Time: 4:42 a.m. EDT, Aug. 1, 2005
End Time: 11:56 p.m. EDT, Aug. 1, 2005
Duration: 7 hours, 14 minutes
The spacewalkers replaced a 600-pound gyroscope on the International Space Station, leaving the orbiting laboratory with a complete functional set of four. Called control moment gyros, or CMGs, the 600-pound devices maintain the Station's orientation in space, the way it is pointed and which part faces the Earth as it orbits the planet.
Flight Day 9
Start Time: 4:48 a.m. EDT, Aug. 3, 2005
End Time: 10:49 a.m. EDT, Aug. 3, 2005
Duration: 6 hours, 1 minute
During the third spacewalk, Noguchi and Robinson installed and activated an External Stowage Platform on the Station's Quest Airlock. The platform is designed to hold Orbital Replacement Units, or ORUs, that will be delivered to the Station in the future. Noguchi also installed another Materials International Space Station Experiment (MISSE). Finally, Robinson rode the end of the Station's Canadarm2 to the underside of Discovery to remove gap fillers from between the orbiter's heat shielding tiles.