Archivos de la categoría ISS News

Crew Spending Another Day in Russian Segment

The three Expedition 63 crew members will spend another day inside the Russian segment of the International Space Station. Mission controllers are continuing their leak detection work today to collect more data.

All of the orbiting lab’s hatches will remain closed until Tuesday morning to give ground specialists additional time to collect data and monitor pressure readings in each module. The rate is still well within segment specifications and presents no danger to the crew or the space station.

The station’s atmosphere is maintained at pressure comfortable for the crew members, and a tiny bit of that air leaks over time, requiring routine repressurization from nitrogen tanks delivered on cargo resupply missions. In September 2019, NASA and its international partners first saw indications of a slight increase above the standard cabin air leak rate. Because of routine station operations like spacewalks and spacecraft arrivals and departures, it took time to gather enough data to characterize those measurements. That rate has slightly increased, so the teams are working a plan to isolate, identify and potentially repair the source.

Meanwhile, the station trio is staying comfortable in the Zvezda service module with access to the Poisk mini-research module,  the Progress 76 cargo craft and their Soyuz MS-16 crew ship. Commander Chris Cassidy of NASA and Roscosmos Flight Engineers Anatoly Ivanishin and Ivan Vagner mainly focused on Earth photography Monday. The station’s Russian segment has a variety of windows the crew can look out with advanced camera gear for their Earth observation activities.

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Mark Garcia

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Crew Spending Weekend in Station’s Russian Segment

The three Expedition 63 crew members living aboard the International Space Station will spend the weekend inside the orbiting lab’s Russian segment. Commander Chris Cassidy and his crewmates Ivan Vagner and Anatoly Ivanishin will stay in the Zvezda service module from Friday night into Sunday morning.

The station’s atmosphere is maintained at pressure comfortable for the crew members, and a tiny bit of that air leaks over time, requiring routine repressurization from nitrogen tanks delivered on cargo resupply missions. In September 2019, NASA and its international partners first saw indications of a slight increase above the standard cabin air leak rate. Because of routine station operations like spacewalks and spacecraft arrivals and departures, it took time to gather enough data to characterize those measurements. That rate has slightly increased, so the teams are working a plan to isolate, identify, and potentially repair the source. The leak is still within segment specifications and presents no immediate danger to the crew or the space station.

All the space station hatches will be closed this weekend so mission controllers can carefully monitor the air pressure in each module. The test presents no safety concern for the crew. The test should determine which module is experiencing a higher-than-normal leak rate. The U.S. and Russian specialists expect preliminary results should be available for review by the end of next week.

The three station residents will have plenty of room in Zvezda this weekend. The module provides the living quarters that enabled permanent human habitation to begin nearly 20 years ago when the Expedition 1 crew arrived at the station Nov. 2, 2000. Cassidy, Vagner, and Ivanishin also will have access to the Poisk mini-research module and their Soyuz MS-16 crew ship for the duration of their stay.

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Mark Garcia

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Space Traffic Clear at Station Until October

The Expedition 63 crew has turned its attention toward space science and lab maintenance after releasing a Japanese cargo craft from the International Space Station on Tuesday. More cargo and crew missions to replenish the orbiting lab are planned for October.

Commander Chris Cassidy switched off communications gear today used to send commands to Japan’s H-II Transfer Vehicle-9 (HTV-9) after its departure on Tuesday. The HTV-9 will orbit Earth until Thursday morning when it descends into the atmosphere for a fiery, but safe demise over the South Pacific.

The NASA commander spent the rest of the day working on orbital plumbing and life support gear. Cassidy removed and replaced the Waste and Hygiene Compartment’s recycle tank located in the Tranquility module. He also inspected out gear that analyzes organic compounds in the station’s air.

Veteran station cosmonaut Anatoly Ivanishin focused on battery work as he installed current converters throughout the lab’s Russian segment. First-time cosmonaut Ivan Vagner spent Wednesday morning working on more orbital plumbing before exploring ways to improve Earth photography techniques and determine how mission events impact the orbiting lab.

Space traffic will be clear at the space station for the rest of August and into September. The mission pace will pick back up in October with a U.S. Cygnus cargo ship from Northrop Grumman, the Expedition 64 crew and the SpaceX Crew-1 mission all to set to arrive within a period of three weeks.

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Mark Garcia

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Japanese Cargo Craft Completes Station Mission

Eleven years after the launch of the first H-II Transfer cargo vehicle (HTV) to the International Space Station, the Japan Aerospace Exploration Agency’s (JAXA’s) HTV-9 departed the orbital laboratory today at 1:36 p.m. EDT.

Earlier today, flight controllers operating from NASA’s Mission Control Center at the agency’s Johnson Space Center in Houston used the space station’s Canadarm2 robotic arm to detach the cargo spacecraft from the station’s Harmony module, then moved the spacecraft into its release position. Expedition 63 Commander Chris Cassidy of NASA used the Canadarm2 robotic arm to release the spacecraft from the station at 1:35 p.m., ending its three-month stay.

This was the final station departure of JAXA’s first-generation Kounotori, or “white stork,” cargo craft, nine of which have delivered more than 40 tons of supplies to space station crews.  JAXA is developing a new fleet of HTV cargo craft, the HTV-X, which is targeted for its first launch in 2022.

The spacecraft launched from the Tanegashima Space Center in Japan on May 20, arriving May 25 to deliver about four tons of supplies and experiments to the orbital complex, including new lithium-ion batteries that were used to upgrade the station’s power systems. The new-technology batteries were installed through a series of spacewalks along the far port truss “backbone” of the station.

HTV-9 will be commanded by JAXA flight controllers at its HTV control center in Tsukuba, Japan, to move away from the station and, on Aug. 20, to fire its deorbit engine in a burn that will send it back into Earth’s atmosphere. Loaded with trash from the space station, the spacecraft will burn up harmlessly over the Pacific Ocean.

For nearly 20 years, astronauts have continuously lived and work on the space station, testing technologies, performing science and developing the skills needed to explore farther from Earth. As a global endeavor, 240 people from 19 countries have visited the unique microgravity laboratory that has hosted more than 3,000 research and educational investigations from researchers in 108 countries and areas.

Learn more about space station activities by following @space_station and @ISS_Research on Twitter as well as the ISS Facebook and ISS Instagram accounts.

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Mark Garcia

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International, Commercial Partners Gear Up for Cargo and Crew Missions

Canada’s robotic arm is poised to remove Japan’s ninth and final H-II Transfer Vehicle (HTV-9) from the International Space Station on Tuesday. Meanwhile, the U.S. and Russia are preparing for the launch of their respective crew ships to the orbiting lab in October.

Commander Chris Cassidy of NASA will be at the robotics workstation on Tuesday and direct the 57.7-foot-long Canadarm2 to release the HTV-9 from its grip at 1:35 p.m. EDT. Roscosmos Flight Engineer Ivan Vagner will back up Cassidy and monitor the release of the HTV-9 as it completes its 85-day cargo mission. NASA TV will cover the activities live starting at 1:15 p.m.

The HTV-9 will spend two more days orbiting Earth before a fiery, atmospheric demise over the South Pacific. JAXA (Japan Aerospace Exploration Agency) is developing an upgraded fleet of HTV-X space station suppliers, replacing the HTV series of spaceships, targeted for their first launch in 2022.

The Expedition 63 and 64 crews are due to trade places at the orbiting lab beginning in mid-October. The Soyuz MS-17 crew ship is slated to blast off from the Baikonur Cosmodrome in Kazakhstan on Oct. 14 and dock to the station’s Rassvet module. NASA astronaut Kate Rubins with Roscosmos cosmonauts Sergey Ryzhikov and Sergey Kud-Sverchkov will then begin a six-month space research mission.

One week later on Oct. 21, Cassidy will wrap up his mission with crewmates Vagner and Russian Flight Engineer Anatoly Ivanishin. The trio will enter the Soyuz MS-16 crew ship, undock from the Poisk module and parachute to a landing in Kazakhstan ending a 195-day expedition in space.

NASA and SpaceX have announced the launch of the SpaceX Crew-1 mission to the station for no earlier than Oct. 23. Mike Hopkins of NASA will command the first operational flight of the Crew Dragon spacecraft piloted by first-time NASA astronaut Victor Glover. They will be joined by Mission Specialists Shannon Walker of NASA and Soichi Noguchi of JAXA, both previous station residents.

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Mark Garcia

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