Astronauts Tim Kopra and Tim Peake ended their spacewalk at 12:31 p.m. EST with the repressurization of the U.S. Quest airlock following an early termination of the spacewalk after Kopra reported a small water bubble had formed inside his helmet.
Commander Scott Kelly will assist the crew members with an expedited removal of their spacesuits and helmets. Once they have removed the spacesuits and helmets, the astronauts will use a syringe to take a water sample and retrieve the helmet absorption pad to determine what may have prompted the water to form inside Kopra’s helmet.
The crew was never in any danger and returned to the airlock in an orderly fashion. The astronauts replaced a failed voltage regulator that caused a loss of power to one of the station’s eight power channels last November, accomplishing the major objective for this spacewalk.
The 4 hour and 43 minutes spacewalk was the third for Kopra and the first for Peake, who both arrived to the station Dec. 15. It was the 192 in support of assembly and maintenance of the orbiting laboratory.
Approximately 2 hours into today’s spacewalk, astronauts Tim Kopra and Tim Peake have completed the replacement of a failed voltage regulator that caused a loss of power to one of the station’s eight power channels last November.
The astronauts will now continue with additional tasks, including the routing of cables in advance of International Docking Adapter installment work to support U.S. commercial crew vehicles.
The solar arrays that convert energy to electricity on the space station are made of thousands of solar cells. Altogether, the arrays can generate 84 to 120 kilowatts of electricity — enough to provide power to more than 40 homes, and the space station’s electrical power system is connected by eight miles (12.9 kilometers) of wire.
Astronauts Tim Kopra and Tim Peake switched their spacesuits to battery power at 7:48 a.m. EST, signifying the start of today’s spacewalk, planned for about six and a half hours.
Kopra is wearing a spacesuit with red stripes and is designated EV1. His helmet camera displays the number 17. Peake is wearing a spacesuit with no stripes and is designated EV2. His helmet camera displays the number 20.
The astronauts are embarking on the 192nd spacewalk in support of space station assembly and maintenance to replace a failed voltage regulator that caused a loss of power to one of the station’s eight power channels last November.
The Electrical Power System consists of an acre of solar panels that take in sunlight to generate, store, and distribute power.
Commander Scott Kelly and one-year crewmate Mikhail Kornienko continue their contribution to the fluid shifts study with the aid of Russian cosmonaut Sergey Volkov. Data from this long-term study hopes to reveal correlations between the distribution of fluid in the body and changes in vision during prolonged stays in microgravity.
Final preparations are underway for tomorrow’s spacewalk by Tim Kopra and Tim Peake to replace the failed Sequential Shunt Unit and regain the use of power channel 1B that went down on November 13. The 6 ½ hour spacewalk will also involve the spacewalkers deploying cables for the future installation of International Docking Adapters on Pressurized Mating Adapters that will accommodate the arrival of U.S. commercial crew vehicles.
Make sure to tune in to NASA TV tomorrow morning for a live look at U.S. EVA #35. Coverage begins at 6:30 a.m. EST: www.nasa.gov/nasatv
Preparation continues for Tim Peake and Tim Kopra for Friday’s 7:55 a.m. EST spacewalk. Today, they will be re-familiarizing themselves with the tools needed to perform the Sequential Shunt Unit (SSU) change out.
Aside from spacewalk preparation, Commander Scott Kelly and Tim Peake will also be setting up the JAXA Electrostatic Levitation Furnace (ELF) equipment. It will be installed into the Multi-purpose Small Payload Rack 2 (MSPR2) work volume inside of the Japanese Experiment Module (JEM).
Commander Scott Kelly and Mikhail Kornienko continue their fluid shift activities with help from Russian cosmonaut Sergey Volkov. Today’s activities are the third part of this experiment in which the Russian Chibis (Lower Body Negative Pressure – LBNP) is worn and ultrasound measurements of their eyes are taken.
Astronauts Tim Peake and Tim Kopra continue to prepare for their 6.5 hour spacewalk on Friday of this week. During the spacewalk they will be replacing a failed voltage regulator which will return power to one of the eight power channels.
Meanwhile, Commander Scott Kelly is gathering hardware for the fluid shifts experiment. Tomorrow, he and his one-year mission crewmate Mikhail Kornienko will be putting on the Russian Chibis suit, a lower body suit which redistributes fluids back to their legs. During this part of the experiment, they will be taking ultrasounds of their eyes to explore the correlation between body fluid distribution and potential changes in vision.
Russian cosmonaut Sergey Volkov has been taking readings for the Vibrolab experiment. Monitoring micro vibrations can help to understand how tiny movements affect science experiments on station.
Two astronauts were back at work today preparing the spacesuits and tools they will use next week during a maintenance spacewalk. The crew also wrapped up some plumbing work while continuing a wide variety of space science.
Flight Engineers Tim Kopra and Tim Peake checked out their U.S. spacesuits ensuring a good fit and readied their spacewalk tools. The duo from the United States and Britain will exit the International Space Station Jan. 15 to replace a failed voltage regulator and work on other maintenance tasks.
The station’s restroom, the Waste and Hygiene Compartment, is back in operation after some parts and cables were replaced. That work was completed after a leak was discovered.
Commander Scott Kelly joined his fellow One-Year crewmate Mikhail Kornienko for the ongoing Fluid Shifts study. That experiment explores how microgravity increases brain pressure pushing back on a crew member’s eye possibly affecting their vision.
Kelly observed a moment of silence this morning to mark the 5th anniversary of the shootings in Tucson, AZ. Rep. Gabrielle Giffords, married to Kelly’s twin brother and ex-astronaut Mark Kelly, was gravely wounded that day. Kelly, who was in space that day as commander of Expedition 26, was joined by his crewmates today for the silent moment.
Two astronauts are counting down to a spacewalk planned for next Friday to replace a failed voltage regulator. While those preparations are under way, the crew is also exploring human research, life science and advanced physics.
Next week’s spacewalkers are NASA astronaut Tim Kopra and European Space Agency astronaut Tim Peake. They will replace a voltage regulator to restore power to one of eight power channels and take care of other maintenance tasks. The duo worked on their spacesuit batteries then joined Commander Scott Kelly to review procedures for their Jan. 15 spacewalk.
Cosmonaut Yuri Malenchenko explored magnetic fields and coulomb crystals and transferred cargo from the newest Progress 62 cargo craft. His fellow flight engineers Mikhail Kornienko and Sergey Volkov reported on the station’s scientific achievements for a Russian educational research program.
Two astronauts are preparing a pair of U.S. spacesuits to get ready for next week’s spacewalk to continue the maintenance of the International Space Station. In the midst of those preparations, the six-member Expedition 46 crew is proceeding with ongoing space science to improve life on Earth and benefit future astronauts.
Tim Kopra from NASA and Tim Peake from the European Space Agency will be the spacewalkers on Jan. 15. They will work outside for about six-hours and 30-minutes to replace a failed voltage regulator, rig cables for future International Docking Adapters and perform other maintenance tasks.
The station residents also worked throughout the day on a variety of experiments exploring human research, physics and other advanced subjects.
Commander Scott Kelly joined cosmonaut Mikhail Kornienko for the Fluid Shifts study. That experiment observes how microgravity increases brain pressure which may push back on a crew member’s eyes, resulting in changes to their vision. Peake and Kopra also participated in life science experiments exploring heart function during long-term space missions and the efficacy of medications in space.