Новости МКС

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http://spaceflight101.com/iss/us-eva-46-successfully-completed-outside-iss/

ISS Astronauts go 3-for-3 in Successful Spacewalks, Robotic Arm Restored to Full Functionality
October 20, 2017

A series of three Extravehicular Activities concluded on Friday with another very successful spacewalk outside the International Space Station that finished repairing the Station's robotic arm for upcoming visiting vehicle captures and external maintenance operations.

Expedition 53 Commander Randy Bresnik and Flight Engineer Joe Acaba spent six hours and 49 minutes working outside the complex, replacing a partially failed camera on one of the robot arm's grappling hands, changing a fuse on the Dextre robot, installing a high-definition video camera and preparing various external spares for future robotic operations should they be needed in case of failures.

Спойлер

Astronaut Joe Acaba working on the Robotic Arm – Photo: NASA TV

Like the two previous EVAs this month, Friday's excursion saw all its primary task list items completed by the spacewalkers as well as a number of bonus tasks – despite minor problems related to safety equipment that held the spacewalkers up at two points during the excursion.


Photo: NASA TV

Friday's spacewalk was the 205th in support of Space Station Assembly and Maintenance, now totaling 1,278 hours of external work. It was the tenth and final planned spacewalk of 2017 – nine have been U.S. EVAs and one was conducted by Russian Cosmonauts for a total of 60 hours and 51 minutes spent spacewalking this year. Randy Bresnik now has five EVAs under his belt for a total of 32 hours; for Joe Acaba, it was his third career EVA and he now has a total of 19 hours and 46 minutes spent working in space.

This year has been a busy one for USOS spacewalkers, kicking off in January with a pair of EVAs to finalize the installation of new Li-Ion batteries of the starboard truss of ISS that had been put in place robotically. Next were two planned EVAs in March to deal with the relocation of Pressurized Mating Adapter 3 and replace a pair of external computer boxes with upgraded units needed for Commercial Crew Vehicle Communications.


Acaba (assisting) in the Airlock with Bresnik & Vande Hei before the Oct. 10 EVA – Photo: NASA

In May, a scheduled EVA accomplished the replacement of a payload controller on one of the Station's Express Logistics Carriers. Also in May, one of the two MDM boxes installed on the March EVAs failed, necessitating an unplanned spacewalk to replace it with a functioning unit.

Friday's was the third outing in just 15 days, coming after successful EVAs on October 5 and 10 by Randy Bresnik and Mark Vande Hei. The three October spacewalks primarily revolved around the replacement of one of two Latching End Effectors (LEEs) on the 18-meter long Canadarm2 which had failed back in August when its latches encountered a motor stall. The replacement of the LEE-A was successfully accomplished on October 5 and the second EVA saw Vande Hei lubricate the newly installed LEE to ensure its moving parts can operate smoothly for years to come.

The two EVAs by Bresnik and Vande Hei also accomplished the replacement of a failed camera group on the Port Truss and the preparation of numerous external spare parts for future robotic and spacewalk efforts should they be needed in case of equipment failures.


Canadarm2 LEE-A Replacement – Photo: NASA TV

The third in the series of EVAs was originally planned to put in place an external HD camera on the Starboard Truss, continue lubrication of the arm, replace a faulty camera group on the Destiny lab, and prepare external spares for future robotic handling.

However, the plan for the spacewalk had to be changed when the camera on the newly installed LEE-A was found to be out of focus – a potential problem for future robotic operations such as visiting vehicle captures and external maintenance. Therefore, the replacement of the LEE-A Camera & Light Assembly (CLA) was made the priority of EVA-3 in favor over the Destiny camera.


CLA on the SSRMS Latching End Effector – Photo: NASA

The current LEE-A (S/N 203) started its tenure on ISS 15 years ago when being delivered as part of the Mobile Base System where it acted as the LEE of the Payload/Orbital Replacement Unit Accommodations, a temporary holding platform for large, powered payloads that essentially gives Canadarm2 a third hand to stow items when going through a base change or other operations.

As part of its POA career, the LEE was only operated 14 times – compared to over 400 cycles on the former LEE-A (S/N 202). Therefore, the LEE was considered an excellent spare fr om a mechanical standpoint, though 15 years in the challenging space environment likely caused the degradation observed on its camera and necessitated its replacement.

Bresnik and Acaba enjoyed a very smooth EVA preparation process on Friday with the official start of the spacewalk marked at 11:47 UTC when the two crew members switched their suits to battery power and climbed out of the airlock. With the completion of the usual checks of suits and tethers, the spacewalkers pressed into a somewhat light task list for a six-hour EVA, hoping to move through their objectives with time to spare to deal with some additional get-ahead tasks.


EOTP Fuses – Photo: NASA TV


Joe Acaba riding the arm – Photo: NASA TV

Randy Bresnik started his EVA with a quick task over at the Dextre Robot where he switched out a broken fuse on the Enhanced Orbital Replacement Unit Temporary Platform (EOTP) that provides a redundant power supply to the payload held on the EOTP. After replacement of the fuse, Mission Control powered up the Dextre robot and Bresnik visually confirmed the fuse was operating, restoring redundancy to the payload power supply.

Joe Acaba, venturing into the void for the first time in eight and a half years, started his EVA by fetching an Articulating Portable Foot Restraint and installing it on LEE-A of Canadarm2 to take a ride over to a camera on the lower face of the S1 truss segment.

Just before Acaba ingressed the arm, Mission Controllers noticed that one of his safety tethers did not quite look right and closer inspection revealed loose stitching. Per the established procedure, Acaba was told to remain in place while Bresnik retrieved a spare fr om the airlock and connected it to Acaba before moving on with the EVA timeline.

The two spacewalkers made up time by working together to position Acaba on the arm before Bresnik departed for External Stowage Platform 2 and robotic operators Paolo Nespoli and Mark Vande Hei began maneuvering EV-2 toward Camera Port 3 for the installation of an External HD Camera Assembly (EHDCA).

These external HD cameras have been developed as add-ons to the existing standard definition camera architecture outside the Station to finally move ISS into the current century where HD cameras have become commonplace, on Earth and in Space. To avoid tapping into the existing system, the EHDCA was designed to draw 120V power fr om the camera lighting circuit and transmit its imagery wirelessly to the interior of ISS.


EHDCA Architecture, Enclosed View & Internal View – Images: NASA


External TV Camera Group Architecture – Image: NASA


CP3 Camera Installation – Photo: NASA TV

Each EHDCA houses a commercial Nikon D4 DSLR in a pressurized, thermally controlled housing with an electric motor responsible for setting the zoom level on a 28-300 lens which will allow for close-up inspections of external components. The cameras can be operated to deliver 720p, 60fps video or 16.2-megapixel still images (ISO 100-12800), making them an extremely useful tool for external inspections carried out remotely from the ground as well as Earth imaging without the need for crew time.

Each 12.8-Kilogram EHDCA comprises a pressurized enclosure, holding the commercial off the shelf camera, the lens assembly, a power supply, heaters and a data system consisting of an h.264 video encoder, an Ethernet switch and a pair of wireless radio antennas.

The installation of the EHDCA required Acaba to first unplug the camera light power supply, slide the camera assembly into a bracket on the standard definition camera and connect the former light power supply to the EHDCA while patching a second connector from the HD camera to the light. These steps went without issue, but after powering up Camera Port 3 after the installation, Mission Control noted an unusually high current draw from the camera light – prompting some troubleshooting steps from the ground.

While Joe Acaba was on the arm, Randy Bresnik moved over to External Stowage Platform 2 wh ere he removed a Multilayer Insulation blanket from a spare Main Bus Switching Unit and tied down insulation tabs around its base to make the spare accessible to the Dextre robot.


Removal of MBSU Insulation – Photo: NASA TV


Radiator Grapple Bar – Image: NASA

The removal of MLI from various external spares is the result of Canadarm2 and Dextre demonstrating their ability to handle most standard ORU replacements by themselves without a spacewalking crew, provided the replacement units are not covered by MLI which the robots are not equipped to handle.

Bresnik also tied down insulation around a Direct Current Switching Unit before pressing into get-ahead tasks which continued the overall effort of readying external spares for future installation. Venturing out port to Express Logistics Carrier 1, Bresnik got to work on a spare Ammonia Pump Module – removing unneeded MLI blankets as well as Velcro straps and tape used as launch locks on the fluid and electrical lines on the pump. He then went on to break torque on the four bolts holding the PM in place and re-torqueing them at a lower value to eliminate any surprises if/when the unit will be removed during a potential repair EVA in the future.

As a second get-ahead task, Randy Bresnik installed a pair of T-Handles on the Port Radiator Grapple Bar to allow for future handling of ISS radiators should their replacement be required. These grapple bars were delivered as the first pieces of external hardware riding on a SpaceX Dragon spacecraft, back on the CRS-2 mission, and would be used to help the ISS robots and crew handle the large radiator elements should they need replacement.


CLA Replacement – Photo: NASA TV

Egressing the robotic arm, Acaba switched the foot restraint over to the S1 truss and guided the robotic arm into a position from wh ere he could access the degraded Camera & Light Assembly on LEE-A. He made easy work removing the CLA by releasing Velcro covers and a pair of bolts – one for the electrical/data connectors between the CLA and LEE, and the other for the mechanical interface.
 
With the degraded CLA removed, Acaba put the spare unit into a magnetic soft dock before driving the mechanical and electrical bolts to fully secure the spare followed by tying down the thermal covers and providing a GO for the arm to be re-powered to allow the new CLA to be checked out. Mission Control was able to report a good CLA to the crew, giving Canadarm2 sharp vision for future operations including the upcoming Cygnus spacecraft capture set for November 13.


LEE Lubrication Work – Photo: NASA TV


Linear Bearing Track Lubrication Locations – Image: NASA

Moving into his get-ahead task list, Joe Acaba went back into the foot restraint, armed with a grease gun to finish the LEE-A lubrication task started on the Oct. 10 EVA by Mark Vande Hei who managed to lubricate the central rigidizing ballscrew within the LEE as well as the four latch ball screws, leaving only the linear bearing tracks to be greased. These parts are directly accessible with the grease gun and Acaba deposited vacuum grease to the inside and outside of the eight linear bearing tracks to make sure the LEE's latches move smoothly over several years of operation.

Just as Acaba was dealing with the final of the four LEE latches, Mission Controllers noted that the controller of his SAFER unit (Simplified Aid for EVA Rescue) had popped out of its slot on the #16 SAFER. Randy Bresnik – on his way to the Starboard Radiator Grapple Bar at the time – stopped at Acaba's location and reported the controller had inadvertently been turned on and indicated a nitrogen quantity of zero, suggesting the SAFER had depleted its 1.4kg nitrogen load due to unintentional contact of the controller with hardware.

Acaba was allowed to finish work at Canadarm2 since he was securely tethered to the foot restraint with his waist tether and also had a good safety tether to the airlock. Making his way back to the airlock, Acaba picked up tool bags and was mindful of his tether protocol before securing himself to the airlock D-ring.

Per the changed situation, Randy Bresnik was instructed to forego the T-handle installation on the starboard side and instead move to External Stowage Platform 2, closer to the airlock, wh ere he prepared another Pump Module by cutting MLI flaps and removing Velcro – the breaking of torque had to be deferred to a future EVA due to time running out on Friday.


Photo: NASA TV

Having checked off their primary tasks plus three get-aheads, the spacewalkers began closing out the EVA in methodical fashion with Randy Bresnik making a tool inventory and reconfiguring safety tethers before calling it a day and venturing back into the Quest airlock to mark the end point of the excursion at 18:36 UTC when repressurization was initiated.

Friday's EVA closed out the planned ISS spacewalks for 2017, but the suits and airlock will be kept in the standard state of readiness since unplanned spacewalks are always in the cards. The next planned spacewalk activity will be another three-EVA series in January to deal with the replacement of Latching End Effector B that has also shown degradation over the past year or two. In January, there is also a planned Russian EVA on the schedule, to be performed by Aleksandr Misurkin and Anton Shkaplerov.

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[Старый]

Картинки с выходами самые интересные.

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Space to Ground: Teacher On Board: 10/20/2017

NASA Johnson

Опубликовано: 20 окт. 2017 г.

https://www.youtube.com/watch?v=05saig9k_qchttps://www.youtube.com/watch?v=05saig9k_qc (2:04)

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Podcast Live from Space: Astronaut Photography

NASA Johnson

Опубликовано: 20 окт. 2017 г.

"Houston We Have a Podcast" streamed live on NASA TV and Facebook Live on October 13, 2017. Hosts Gary Jordan and Megan Sumner talk about astronaut photography with Expedition 53 crewmembers Randy "Komrade" Bresnik, Paolo Nespoli, Joe Acaba, and Mark "Sabot" Vande Hei. The crewmembers answer questions submitted on Facebook Live.

https://www.youtube.com/watch?v=aLmvj6r5f7khttps://www.youtube.com/watch?v=aLmvj6r5f7k (35:20)

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Space Station Crew Completes a Trio of October Spacewalks

NASA

Опубликовано: 20 окт. 2017 г.

Outside the International Space Station, Expedition 53 Commander Randy Bresnik and Flight Engineer Joe Acaba of NASA conducted a spacewalk Oct. 20 to continue upgrades to and maintenance of station hardware. It was the third spacewalk in two weeks for Expedition 53 crewmembers outside the Quest airlock. During the excursion, Bresnik and Acaba replaced a failed camera light on the new Latching End Effector "hand" on the Canadarm2 robotic arm, installed a new high definition camera on the starboard truss of the complex, replaced a fuse on the Dextre Special Dexterous Manipulator attachment for the arm and removed thermal blankets from two spare electrical routing units for future robotic replacement work, if required. It was the fifth spacewalk in Bresnik's career and the third for Acaba.

https://www.youtube.com/watch?v=0BUxR5ZNaJghttps://www.youtube.com/watch?v=0BUxR5ZNaJg (5:26)

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Гравитация в невесомости

Телестудия Роскосмоса

Опубликовано: 20 окт. 2017 г.

В Институте медико - биологических проблем разработали уникальную центрифугу для создания силы тяжести в невесомости. Она способна создать гравитацию необходимую для длительных космических полетов.

https://www.youtube.com/watch?v=9pfg7pfAGKwhttps://www.youtube.com/watch?v=9pfg7pfAGKw (7:54)

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LIVE: US Spacewalk #46 Outside Space Station

Space Videos

US Astronauts Randy Bresnik and Joseph M. Acaba are set to venture outside the International Space Station for a 6.5 hour spacewalk to maintain the Station's Robotic Arm as well as replace several cameras that are showing poor image quality.

https://www.youtube.com/watch?v=yRrqXKMoQY4https://www.youtube.com/watch?v=yRrqXKMoQY4 (8:35:29)

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https://spaceflightnow.com/2017/10/20/eva-46/

Astronauts wrap up spacewalk, accomplishing all primary tasks
October 20, 2017 William Harwood

EDITOR'S NOTE: Updated at 3 p.m. EDT (1900 GMT) after spacewalk's conclusion.

STORY WRITTEN FOR CBS NEWS & USED WITH PERMISSION


Astronaut Joe Acaba works outside the International Space Station during a spacewalk Friday. Credit: NASA TV/Spaceflight Now

Staging NASA's third spacewalk in 15 days, two astronauts floated outside the International Space Station Friday and installed a new high definition camera, replaced a degraded camera on a recently attached robot arm grapple fixture, finished lubricating the mechanism and carried out a variety of other "get-ahead" tasks.

Спойлер

The only items the crew missed were two low priority get aheads, the attachment of a handling fixture on a spare radiator assembly to make it easier to move later and bolt adjustments on another piece of backup gear.

But all of their primary tasks were accomplished, including replacement of a fuse in a payload carrier used by an appendage of the robot arm and work to rig several spare components for quick access if they are ever needed.

Floating in the Quest airlock, station commander Randy Bresnik and Joe Acaba switched their spacesuits to battery power at 7:47 a.m. EDT to officially kick off the year's tenth spacewalk, the third in the past two weeks.

The spacewalk originally was planned for Wednesday, but it was delayed two days after engineers discovered a camera-light assembly on the robot arm grapple fixture that was installed during an Oct. 5 spacewalk was not focusing properly. The camera provides the bird's eye view needed for the arm to capture visiting cargo ships and other components.

Acaba, anchored to the end of the robot arm, first installed a new high definition camera on the lower right side of the station's long power truss.

While Acaba was setting up the arm for the camera installation, Bresnik replaced the fuse in the robot arm payoad carrier and then brought out a replacement safety tether after loose stitching was seen on one of the redundant tethers securing Acaba to the station.

With the tether replaced, Bresnik removed insulation from a spare electrical distribution box known as a main bus switching unit, or MBSU, and tied back insulation on another component known as a direct current switching unit, or DCSU.

Getting the insulation out of the way will enable the robot arm to grapple either unit down the road if failures occur and the spares are needed as replacements.

After installing the new HD camera, Acaba got off the arm, anchored himself to a foot restraint on the truss and removed the camera assembly on the robot arm grapple fixture, known as a latching end effector, or LEE.

After removing the degraded camera, Acaba installed a replacement that he carried outside earlier. Engineers powered up the arm and the camera worked as expected.

Acabs then used a grease gun to lubricate the grapple mechanism, work that was started during the Oct. 5 spacewalk. Toward the end of the work, flight controllers noticed a handle on Acaba's emergency jetpack had popped open.

The nitrogen-powered jetpacks worn by all NASA spacewalkers are designed to allow an astronaut to "fly" back to station if he or she somehow got disconnected from safety tethers. Acaba was firmly tethered throughout, and he was told to complete the lubrication work before heading back to the airlock.

Repressurization began at 2:36 p.m., closing out a six-hour 49-minute spacewalk.

This was the 205th EVA devoted to station assembly and maintenance since construction began in 1998, the fifth overall for Bresnik and the third for Acaba. One hundred and 24 astronauts and cosmonauts representing 10 nations have now logged 1,278 hours and 25 minutes of station EVA time, or 53.3 days.

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Randy Bresnik‏Подлинная учетная запись @AstroKomrade 8 ч. назад

.@AstroAcaba bringing new life to @Space_Station. 5 types of Lettuces!

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https://www.nasa.gov/press-release/international-space-station-crew-invites-public-along-for-photographic-trip-around

Oct. 20, 2017
MEDIA ADVISORY M17-125

International Space Station Crew Invites Public Along for Photographic Trip Around World

NASA astronaut and Expedition 53 Commander Randy Bresnik will spend one full orbit photographing Earth fr om the International Space Station on Monday, Oct. 23, and he is inviting people around the globe to share images from their Earth-side vantage point on social media.

Bresnik, with help from fellow astronaut Joe Acaba, will begin the "photo frenzy" from the station's 360-degree Earth-facing cupola window beginning at 8:25 a.m. EDT. Traveling at about five miles per second, the station completes one orbit around Earth approximately every 90 minutes.

Спойлер

As part of NASA's Year of Education on Station, an initiative to inspire more students and teachers than ever before during the 2017-18 school year, students located in areas Bresnik will photograph are especially invited to join him on the journey and share their photos, including their locations and names of their schools.

"You can't look at the Earth and not be changed," Bresnik said. "You realize every experience you've ever had and every person you've ever known is down on that little blue marble."

The station's orbit will begin with a sweep from the United Kingdom across central Europe to Oman, a pass near the Maldives, sunset west of Australia and sunrise over the south Pacific Ocean before concluding with a pass over North America from Puerto Vallarta, Mexico, to Montreal, Canada. Bresnik will be posting updates of his views on his social media accounts throughout, as satellite communications coverage allows.


Larger Version

Regardless of wh ere you'll be on Earth during their photo session, the astronauts are asking for your help to capture this moment in time, specifically from 8:25-9:55 a.m. EDT (12:25-13:55 GMT). They're encouraging educators, students, and the public to post a picture to social media of their surroundings from their unique vantage point using the hashtag #1World1Orbit.

Astronaut photography documents how the planet changes over time, from human-caused changes like urban growth and reservoir construction, to natural dynamic events such as hurricanes, floods and volcanic eruptions. In addition to research applications, photography is a favorite pastime of the crew, and many astronauts feel compelled to share their cosmic perspective with humanity with humanity on social media.

There are opportunities for humanity to stay in touch with our representatives off the planet every day. You can track the station and sighting opportunities in your area anytime with NASA's Spot the Station tool.

Another Earth observation from station opportunity is Sally Ride EarthKAM, which begins its next mission on Nov. 1, and allows student groups to track and analyze sections of the planet over time.

Follow Bresnik on social media at:

https://www.facebook.com/AstroKomrade/

https://twitter.com/AstroKomrade

https://www.instagram.com/astrokomrade

-end-

Stephanie Schierholz
 Headquarters, Washington
 202-358-1100
stephanie.schierholz@nasa.gov

Brandi Dean
 Johnson Space Center, Houston
 281-483-5111
brandi.k.dean@nasa.gov

Last Updated: Oct. 21, 2017
Editor: Allard Beutel

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Сергей Рязанский‏Подлинная учетная запись @SergeyISS 21 мин. назад

#Казань славится на весь мир своими уникальными шедеврами архитектуры и отлично смотрится с борта МКС // #Kazan looks great from the ISS

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https://www.thalesgroup.com/en/worldwide/space/news/ten-years-perfect-harmony

Ten years in perfect "Harmony"!
| 23.10.2017 |

Today marks the 10th anniversary of the Node 2's launch to the International Space Station (ISS). For those whose memories have grown dim, here are some highlights from Harmony's story.

On October 23, 2007, Space Shuttle Discovery lifted off from NASA's Kennedy Space Center in Cape Canaveral, Florida. Discovery carried a crew of seven on this mission, dubbed STS-120, including ESA astronaut Paolo Nespoli, from Italy, and the Node 2 module, paving the way for the station's expanded research capabilities.

Спойлер

The module was officially named on March 15, 2007, following a competition involving more than 2,200 students from 32 American states. Six different schools submitted the name "Harmony." A panel of NASA educators, engineers, scientists, and senior agency management selected the name because it symbolizes the spirit of international cooperation embodied by the station, as well as the module's specific role in connecting the international partner modules.

A multitasking connecting module



The inter-connecting Node 2 – based on the structural design of the Multi-Purpose Logistics Modules (MPLM) and Europe's Columbus laboratory – plays a critical role in the station's task of hosting Columbus and Japan's Kibo module.

Node 2 was not the first European-built module attached to the ISS, but it was the first designed to remain attached for the rest of the station's life.


European Space Agency astronaut Luca Parmitano playing the guitar in the Harmony node of the International Space Station - Oct. 26th 2013

This module was built for NASA by Thales Alenia Space in Italy, under contract to ESA and the Italian space agency ASI. It also provided a docking port for the discontinued Space Shuttle and the Japanese HII transfer vehicle, while serving as an attachment point for the Multi-Purpose Logistics Modules. In addition, Node 2 provides a base for the Space Station's robotic arm, Canadarm 2.

Thales Alenia Space provides half of the Space Station's pressurized volume!



The ISS holds a special place in the hearts of Thales Alenia Space's engineers. The company has provided fully half of the pressurized volume on the ISS, including Nodes 2 and 3, the Leonardo Permanent Multipurpose Module (PMM), the Multipurpose Logistics Modules (MPLM) and the Cupola, the Columbus lab structure, and the cargo modules for the ATV resupply vessels. Thales Alenia Space also builds, on behalf of Orbital ATK, the pressurized cargo modules (PCM) for the Cygnus resupply vessels. Another Cygnus will be launched in the coming weeks. Stay tuned for the latest info.

Copyrights:
Photos: ©NASA
Last artistic view: ©Thales Alenia Space/Master Image Programmes

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https://blogs.nasa.gov/stationreport/2017/10/20/iss-daily-summary-report-10202017/

ISS Daily Summary Report – 10/20/2017
Posted on October 20, 2017 at 4:00 pm by HQ.

USOS Extra Vehicular Activity (EVA) #46:

Спойлер

Randy Bresnik (as EV1) and Joe Acaba (as EV2) successfully performed US EVA #46 with a Phased Elapsed Time (PET) of 6 hrs 49 min. The primary goals of the EVA were to Remove and Replace (R&R) a fuse in the Special Purpose Dexterous Manipulator (SPDM) Enhanced ORU Temporary Platform (EOTP), install an External High Definition Camera (EHDC) at the Camera Port 3 (CP3) location, and install a new Camera/Light Assembly (CLA) on the Space Station Remote Manipulator System (SSRMS) Latching End Effector A (LEE A). The crew also removed Multi-Layer Insulation (MLI) from an Main Bus Switching Unit (MBSU) and tied down an MLI Skirt on a spare Direct Current Switching Unit (DCSU). The crew also performed the following get ahead tasks: Lubrication of the LEE A Linear Bearings, Prep of two Pump Modules (PMs) by removing the MLI straps and tape used for launch loads, and T-Handle installation on the Port Radiator Grapple Bar (RGB).

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Circadian Rhythms:

Спойлер

The 51S crewmember removed and stowed the Double Sensors and Thermolab Unit equipment that was used to complete a 36 hour Circadian Rhythms session that began on Wednesday. Circadian Rhythms investigates the role of synchronized circadian rhythms, or the "biological clock," and how it changes during long-duration spaceflight. Researchers hypothesize that a non-24-hour cycle of light and dark affects crewmembers' circadian clocks. The investigation also addresses the effects of reduced physical activity, microgravity and an artificially controlled environment. Changes in body composition and body temperature, which also occur in microgravity, can affect crewmembers' circadian rhythms as well. Understanding how these phenomena affect the biological clock will improve performance and health for future crewmembers.

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Space Headaches:

Спойлер

Today a 51S crewmember completed a weekly questionnaire for the ESA Space Headaches investigation. The Space Headaches investigation collects information that may help in the development of methods to alleviate associated symptoms and improvement in the well-being and performance of crewmembers in space. Headaches during space flight can negatively affect mental and physical capacities of crewmembers that can influence performance during a space mission.

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АНОНС

NASA Education‏Подлинная учетная запись @NASAedu 8 мин. назад

TODAY at 10:50am ET: Watch Georgia students chat live w/ @AstroAcaba, @Astro_Sabot, & @AstroKomrade! http://www.nasa.gov/ntv  #STEMonStation

17:50 ДМВ

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https://www.nasa.gov/mission_pages/station/research/news/lungtissue

Oct. 20, 2017

Space Station Crew Takes a Breather with Lung Tissue Investigation

The microgravity environment of the International Space Station impacts nearly every system within the human body. Researchers are studying the effects to the eyes, heart, muscles, and bones, but an area that hasn't received as much focus is one that is vital to human survival: the lungs.

Спойлер

Like a set of lungs, the Effect of Microgravity on Stem Cell Mediated Recellularization (Lung Tissue) investigation aboard the International Space Station is two-fold. First, researchers are studying the long-term effects microgravity may have on the lungs to gain insight into what countermeasures will need to be taken to protect crew members' lungs during long-duration missions. The investigation also will test strategies of lung recellurization, or the ability to grow cells into usable tissue on a natural lung scaffold, to be used for lung transplants on Earth.


NASA astronaut Randy Bresnik works with the bioreactor bags containing lung tissue samples within the Microgravity Science Glovebox aboard the space station. The culture fluid will need to be frozen and returned to Earth for analysis.
Credits: NASA

Human lungs are sturdy and durable organs, but there isn't much definitive information regarding how they'll react during extended spaceflight. Every breath a person takes causes minor damage to their lungs. To battle this and maintain healthy function, lungs are constantly repairing and healing themselves. In microgravity, however, that process could change. The Microphysiological Human Organ Culture Model (MHOC), developed under a National Institute of Health grant, will tell researchers if our lungs stay just as strong and durable in space, or if they'll need extra help along the way.

"We need to understand how lungs heal over long-term spaceflight," said Joan Nichols, principal investigator for the investigation and professor of internal medicine, microbiology and immunology at the University of Texas Medical Branch. "If they don't heal properly, we might be able to come up with a microparticle therapeutic treatment that you breathe through an inhaler that would limit the damage that we're seeing or enhance the cells to do what you need them to do."


Human lung scaffold pieces (0.5 mm3) can be made, for use as a scaffold to support growth of bioengineered lung for research studies like Lung Tissue. Image courtesy of Joan Nichols.
Credits: Image courtesy of Joan Nichols.

Part two of the investigation studies how microgravity may help to provide a more conducive environment for growing stems cells into lung tissue for transplants on Earth.

On Earth, stem cells attach to one another, divide a few times and mature into advanced tissue almost immediately afterward. In space, these stem cells have been known to stay pure and immature longer, a phenomenon Nichols calls "staying stemmy."

"It's hard, on Earth, for me to grow enough of these cells and expand them out because they start maturing immediately," said Nichols. "If I can grow more in space, then I might be able to take a sample, isolate those cells that I work with, grow them to high numbers and then come back and make a lung for replacement either using a whole natural lung scaffold or develop a bio printing technique to print one that fits perfectly."

Once the team grows enough of the stem cells, they are loaded on to a natural lung scaffold, a damaged, non-viable lung that has been drained of blood and cells, leaving only the structure of the organ. If research teams could grow enough cells on Earth, the stem cells use the scaffold to grow into a whole lung. Being able to grow these pure stem cells in microgravity and then bring them back to Earth for maturation on a scaffold could mean easier, more accessible lung transplants for patients who need them.

Tissue samples fr om the investigation were returned to Earth aboard the SpaceX Dragon spacecraft Sept. 17 and then to UTMB wh ere they are undergoing analysis.

This National Lab investigation is sponsored by the Center for the Advancement of Science in Space (CASIS). For more information about other science happening aboard the orbiting laboratory, follow @ISS_Research. 

https://www.youtube.com/watch?v=wiWJbUl47O8
The University of Texas Medical Branch sent human lung tissue to the ISS National Lab to better understand how lung tissue functions in microgravity in preparation for long-term spaceflight.

Jenny Howard
International Space Station Program Science Office
Johnson Space Center

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Last Updated: Oct. 23, 2017
Editor: Erling Holm

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https://blogs.nasa.gov/spacestation/2017/10/23/culmination-of-spacewalks-leads-into-studies-on-crew-health-and-performance/

Culmination of Spacewalks Leads into Studies on Crew Health and Performance
Posted on October 23, 2017 at 3:03 pm by Catherine Williams.


A spectacular aurora borealis, or "northern lights," over Canada is sighted from the International Space Station near the highest point of its orbital path. Image Credit: NASA

After a trio of spacewalks this month, including the final one conducted last Friday by Commander Randy Bresnik and Flight Engineer Joe Acaba of NASA, the Expedition 53 crew returned to a schedule of full-time science this week.

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Today, the crew explored how lighting aboard the International Space Station affects their performance and health. One such investigation is called Lighting Effects, which studies the impact of the change from fluorescent light bulbs to LEDs. By adjusting intensity and color, investigators on the ground will use crew feedback to determine if new lights can improve crew circadian rhythms, sleep and cognitive performance.

Blood and urine samples were also collected and stowed in the Minus Eighty Degree Celsius Laboratory Freezer for ISS, or MELFI, marking Flight Day 30 for the Biochemical Profile and Repository experiments. Specific proteins and chemicals in the samples are used as biomarkers, or indicators of health. Armed with a database of test results, scientists can learn more about how spaceflight changes the human body and protect future astronauts on a journey to Mars based on their findings.

Expedition 53 is also preparing a microsatellite carrying an optical imaging system payload for deployment. Its operation in low-Earth orbit will attempt to solidify the concept that these small satellites are viable investigative platforms that can support critical operations and host advanced payloads.

This entry was posted in Uncategorized on October 23, 2017 by Catherine Williams.

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Space Station Crew Discusses Life in Space with Georgia Students

NASA

Опубликовано: 23 окт. 2017 г.

Aboard the International Space Station, Expedition 53 Commander Randy Bresnik and Flight Engineers Joe Acaba and Mark Vande Hei of NASA discussed life and research aboard the orbital outpost during an in-flight educational event Oct. 23 with students at the New Prospect Elementary School in Alpharetta, Georgia. The crew members are in various stages of their five and a half month missions on the orbital complex.

https://www.youtube.com/watch?v=55XVfwkmepYhttps://www.youtube.com/watch?v=55XVfwkmepY (21:02)

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NanoRacks‏Подлинная учетная запись @NanoRacks 1 ч. назад

We have a good deploy! Our first-ever customer #MicroSat released from #ISS with our #Kaber deployer at 09:45:01 GMT. Congrats #KE2M!

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Gunter Krebs‏ @Skyrocket71  2m

The US Army's 50 kg Kestrel Eye 2M imaging satellite was deployed from the ISS via NanoRacks Kaber deployer. http://fb.me/1KqyVL4yZ 

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NanoRacks‏Подлинная учетная запись @NanoRacks 3 ч. назад

First look at this morning's #Kaber deployment from the NanoRacks #BRIDGE Operations Center. High-res imagery coming later this week #ISS