During a spacewalk on Jan. 23, 2018, Expedition 54 flight engineers Mark Vande Hei and Scott Tingle replaced a Latching End Effector (LEE-B) on the Canadarm2 robotic arm. An issue preventing the LEE from transitioning to an operational state on one of two redundant sets of communications strings was detected. The spacewalking crew demated and remated the connectors and ground teams were able to power up the arm to an operational state on its secondary communications string leaving the arm operational but without a redundant communications string.
After extensive troubleshooting by teams from NASA and the Canadian Space Agency (CSA), the decision was made by space station managers to use the scheduled Jan. 29 spacewalk to reinstall the LEE removed on the Jan. 23 spacewalk to restore fully redundant capability to the robotic arm. CSA and its robotics specialists are continuing diagnostics over the weekend to gain additional insight. If data is obtained that could be used to solve the issue, Monday’s spacewalk could be postponed.
Two Expedition 54 astronauts continue preparing for Monday’s upcoming spacewalk to wrap up robotics repair work. The crew is also working on a variety of science gear to ensure the orbital laboratory is in tip-top shape.
Flight Engineer Mark Vande Hei is going outside the International Space Station again for this year’s second spacewalk. This time he’ll work with Japanese astronaut Norishige Kanai to finish maintenance on a Latching End Effector, or the robotic hand of the Canadarm2 robotic arm. That work was started Tuesday when Vande Hei partnered with NASA astronaut Scott Tingle during a seven-hour and 24-minute spacewalk. Monday’s spacewalk begins at 7:10 a.m. EST with live NASA TV coverage beginning at 5:30 a.m.
As usual, advanced microgravity research is ongoing inside and outside the space station. This morning, veteran station astronaut Joe Acaba tended to a pair of science freezers ensuring they maintain proper temperatures for the stowage of biological samples. Kanai checked out a 3D printed satellite deployer that will spring-launch four tiny satellites known as FemtoSats from the station.
One spacewalk down, two more to go before next weekend. A U.S. and a Japanese astronaut will go on the next spacewalk Jan. 29 followed by two cosmonauts on Feb. 2.
Flight Engineers Mark Vande Hei and Norishige Kanai will put on their U.S. spacesuits early next week and exit the Quest airlock to wrap up maintenance on the Canadarm2. The duo will spend about six and a half hours wrapping up work from Tuesday’s spacewalk on swapping a degraded Latching End Effector from the Canadarm2. The spacewalkers will start their excursion Monday at 7:10 a.m. EST and NASA TV coverage will begin at 5:30 a.m.
Cosmonauts Anton Shkaplerov and Alexander Misurkin are also preparing for their next spacewalk set for next Friday when they open the Pirs docking compartment hatch at 10:34 a.m. The veteran station residents will don their Russian Orlan spacesuits for a near six-and-a-half-hour spacewalk outside the International Space Station’s Russian segment. The duo will retrieve science samples exposed to outer space and install a high gain antenna on the rear of the Zvezda service module. NASA TV coverage starts 9:45 a.m.
Both excursions come in the wake of Tuesday’s spacewalk with astronauts Vande Hei and Scott Tingle lasting seven hours and 24 minutes. The two astronauts replaced a Latching End Effector (LEE) on the station’s robotic arm, Canadarm2.
In the midst of the busy spacewalk work, the Expedition 54 crew has been conducting science to understand how living in space affects the human body. Vande Hei is exploring how station lighting affects crew sleep while astronaut Scott Tingle looked at microgravity’s impacts on the brain. Flight Engineer Joe Acaba explored using a special strain of bacteria to support long-term life support systems on future spacecraft.
Expedition 54 Flight Engineers Mark Vande Hei and Scott Tingle of NASA completed the first spacewalk this year at 2:13 p.m. EST, lasting 7 hours, 24 minutes. The two astronauts replaced a Latching End Effector (LEE) on the station’s robotic arm, Canadarm2.
There are two redundant end effectors on each end of the arm used to grapple visiting vehicles and components during a variety of operational activities. The spacewalk was the 206th in support of space station assembly and maintenance, the third in Vande Hei’s career and the first for Tingle. Vande Hei will venture outside the station again Jan. 29 with Flight Engineer Norishige Kanai of the Japan Aerospace Exploration Agency (JAXA) to stow a spare latching end effector removed from the robotic arm last October on to the station’s mobile base system rail car for future use.
Spacewalkers have now spent a total of 53 days, 13 hours, and 49 minutes working outside the station in support of assembly and maintenance of the orbiting laboratory.
The International Space Station has been orbiting Earth for 7,000 days as of today Friday, Jan. 19, 2018. The first module, the Russian Zarya cargo module, launched to space in November of 1998. The first crew arrived at the young three-module orbital laboratory in November of 2000.
54 crews and 205 spacewalks later, the current six-member Expedition 54 crew is gearing up for a pair of spacewalks on Jan. 23 and 29. NASA astronaut Mark Vande Hei will lead both spacewalks with Flight Engineer Scott Tingle joining him on the first spacewalk. Japanese astronaut Norishige Kanai will join Vande Hei for the second spacewalk.
All three astronauts were joined today by Flight Engineer Acaba for a spacewalk procedures review with specialists on the ground. The spacewalking trio will be swapping and stowing robotics parts to maintain the upkeep of the Canadarm2 robotic arm. Both spacewalks will start each day at 7:10 a.m. EST with live NASA Television coverage beginning at 5:30 a.m.
The two cosmonauts aboard the space station, Commander Alexander Misurkin and Flight Engineer Anton Shkaplerov, conducted regularly scheduled eye checks today. The veteran orbital residents worked with doctors on the ground using a fundoscope to view the interior of the eye. Crew members aboard the station participate in regular eye exams to understand how living in space affects vision.
A pair of spacewalks are planned for Jan. 23 and 29 to swap and stow external robotics gear. NASA astronaut Mark Vande Hei will lead both spacewalks. Flight Engineer Scott Tingle will join him on the first spacewalk with Japanese astronaut Norishige Kanai joining Vande Hei on the second.
Vande Hei, Tingle and Kanai checked the spacesuits today they will wear outside the International Space Station for the two robotics maintenance spacewalks. Flight Engineer Joe Acaba assisted the spacewalkers with their spacesuit fit checks and helped collect spacewalk tools.
Vande Hei and Tingle will exit the U.S. Quest airlock Tuesday at 7:10 a.m. EST for six-and-a-half hours of work on the Canadarm2 robotic arm. NASA TV will cover the spacewalk live beginning at 5:30 a.m. The duo will swap a Latching End Effector (LEE) with a spare one. The LEE is the part of the Canadarm2 that grapples and releases spaceships and station hardware.
Ground controllers released the SpaceX Dragon cargo spacecraft from the International Space Station’s robotic arm at 4:58 a.m. EST. The capsule will begin a series of departure burns and maneuvers to move beyond the “keep out sphere” around the station for its return trip to Earth.
Dragon’s thrusters will be fired to move the spacecraft a safe distance from the station before SpaceX flight controllers in Hawthorne, California, command its deorbit burn about 9:43 a.m. The capsule will splashdown about 10:36 a.m. in the Pacific Ocean, where recovery forces will retrieve the capsule and its nearly 4,100 pounds of cargo. This cargo will include science samples from human and animal research, external payloads, biology and biotechnology studies, physical science investigations and education activities.
The deorbit burn and splashdown will not be broadcast on NASA TV.
NASA and the Center for the Advancement of Science in Space (CASIS), the non-profit organization that manages research aboard the U.S. national laboratory portion of the space station, will receive time-sensitive samples and begin working with researchers to process and distribute them within 48 hours of splashdown.
Dragon, the only space station resupply spacecraft currently able to return to Earth intact, launched Dec. 15 on a SpaceX Falcon 9 rocket from Space Launch Complex 40 at Cape Canaveral Air Force Station, and arrived at the station Dec. 17 for the company’s 13th NASA-contracted commercial resupply mission.
Keep up with the International Space Station, and its research and crew members, at www.nasa.gov/station.
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NASA Television coverage of the departure of the SpaceX Dragon spacecraft from the International Space Station will begin on Saturday, Jan. 13 at 4:30 a.m. EST. The spacecraft is targeted for release at 5 a.m. Watch live on NASA TV or the agency’s website.
Dragon was robotically detached from the Earth-facing side of the station’s Harmony module today at 5:47 p.m. The resupply ship launched to the space station Dec. 15 from Space Launch Complex 40 at Cape Canaveral Air Force Station in Florida carrying more than 4,800 pounds of supplies and cargo on SpaceX’s 13th commercial resupply mission to the station for NASA.
The capsule is currently scheduled to splash down in the Pacific Ocean at about 10:36 a.m., just to the west of Baja California. It will return about 4,100 pounds of cargo, including research samples.
Keep up with the International Space Station, and its research and crew members, at www.nasa.gov/station.
NASA astronauts Joe Acaba, Scott Tingle and Mark Vande Hei have wrapped up cargo operations inside the SpaceX Dragon disconnecting power cables and depressurizing the vehicle. Robotics controllers will detach Dragon resupply ship from the International Space Station’s Harmony module tonight. Dragon will then be remotely released from the grip of the Canadarm2 into Earth orbit at 5 a.m. EST Saturday for a Pacific Ocean splashdown at 10:36 a.m.
Acaba and Tingle will monitor Dragon’s departure Saturday morning from inside the cupola as controllers on Earth release a cargo craft remotely from the space station for the first time. NASA TV will broadcast live the resupply ship’s departure starting Saturday at 4:30 a.m. Splashdown will not be televised.
Japanese astronaut Norishige Kanai worked a variety of life science experiments today exploring what happens to humans living in space. He started the morning drawing his blood samples and storing them in a science freezer for later analysis. He also stowed frozen science samples inside Dragon for return to Earth. At the end of the day, Kanai removed petri plates from a specialized microscope containing plant samples being observed for molecular and genetic changes caused by microgravity.
Students on Earth are remotely testing algorithms on a pair of internal satellites as part of a competition aboard the International Space Station today. Meanwhile, the Expedition 54 crew is packing up the SpaceX Dragon cargo craft for its Saturday departure and conducting biomedical operations.
Commander Alexander Misurkin and Flight Engineer Joe Acaba are monitoring tiny satellites known as SPHERES flying inside the Japanese Kibo laboratory module. Students on Earth have uploaded algorithms maneuvering the SPHERES to compete for creating the best designs relevant to future space missions.
NASA astronauts Mark Vande Hei and Scott Tingle are transferring rodents from the station’s animal habitat to a transporter aboard the Dragon resupply ship for return and analysis on Earth. The rodents were treated with a compound that fights muscle loss in microgravity and will be compared to a group of mice on Earth.
Japanese astronaut Norishige Kanai concluded a session of the Airways Monitoring experiment stowing the research gear in the U.S. Quest airlock. The study is analyzing exhaled air to maintain astronaut health on long-term space missions. Kanai also collected his biological samples for the Probiotics study looking at the immune system and intestinal microbes living inside space station crew members.