Новости МКС

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Термочехол закрыт

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William Harwood‏ @cbs_spacenews 4 мин. назад

US EVA-54: McClain and Saint-Jacques are back inside the Quest airlock; thermal cover closed; airlock repressurization will begin shortly

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Наружный люк закрыт.

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https://blogs.nasa.gov/spacestation/2019/04/08/u-s-and-canadian-astronauts-wrap-up-power-upgrades-spacewalk/

U.S. and Canadian Astronauts Wrap Up Power Upgrades Spacewalk

Mark Garcia
Posted Apr 8, 2019 at 2:03 pm


Astronauts Anne McClain (left) and David Saint-Jacques work outside the International Space Station during their spacewalk on April 8, 2019.

Expedition 59 Flight Engineers Anne McClain of NASA and David Saint-Jacques of the Canadian Space Agency concluded their spacewalk at 2:00 p.m. EDT. During the six hour and 29-minute spacewalk, the two astronauts successfully established a redundant path of power to the Canadian-built robotic arm, known as Canadarm2, and install cables to provide for more expansive wireless communications coverage outside the orbital complex, as well as for enhanced hardwired computer network capability.

This is the third spacewalk in just under a month on the space station. The first two spacewalks installed powerful lithium-ion batteries for one pair of the station's solar arrays. On March 22, the first spacewalk was completed by McClain and fellow NASA astronaut Nick Hague. On March 28, the second spacewalk was completed by Hague and NASA astronaut Christina Koch.

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• March 22 was the first spacewalk for NASA astronauts Hague and McClain. McClain became the 13th female spacewalker in history.
• March 29 also was the first spacewalk for NASA astronaut Christina Koch, who became the 14th female to complete a spacewalk.
• Space station crew members have conducted 216 spacewalks in support of assembly and maintenance of the orbiting laboratory. Spacewalkers have now spent a total of 55 days XX hours and XX minutes working outside the station.
• Saint-Jacques became the first Canadian Expedition astronaut to walk in space and the fourth Canadian astronaut to spacewalk overall.
  

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William Harwood‏ @cbs_spacenews 9 мин. назад

US EVA-54: Airlock repress underway, ending today's spacewalk at 2pm EDT; duration was 6 hours and 29 minutes; total ISS EVA time through 216 spacewalks now stands at 1,354 hours and 53 minutes, or 56.5 days

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Статистика выхода

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https://ria.ru/20190408/1552495126.html

Астронавты НАСА вернулись на МКС после шести часов в открытом космосе
21:21

ВАШИНГТОН, 8 апр – РИА Новости. Астронавты Энн Макклейн и Давид Сен-Жак вернулись в шлюзовый отсек, завершив плановые работы по техническому обслуживанию Международной космической станции (МКС) в открытом космосе, НАСА ведет прямую трансляцию.

Отсчет времени выхода в открытый космос Макклейн и Сен-Жака велся с момента перевода их скафандров в режим автономного питания. Дуэт вышел в открытый космос около 14:50 мск и вернулся на МКС приблизительно в 20:50 мск. После задраивания люка шлюзового отсека началась процедура выравнивания давления в нем, после его завершения астронавты войдут на станцию. Снимать скафандры им помогут астронавты НАСА Ник Хейг и Кристина Кок.

Для астронавта НАСА Энн Макклейн это был второй выход в открытый космос, для канадца Сен-Жака – первый в карьере.

Ранее астронавты НАСА Макклейн, Ник Хейг и Кристина Кок провели два плановых выхода в открытый космос, в ходе которых осуществили замену аккумуляторов на одной из ферм станции. В ходе сегодняшнего выхода в открытый космос Макклейн повела работы по прокладке кабеля для резервного блока питания механического манипулятора Canadarm2. Сен-Жак работал над различными заданиями, часть которых стала подготовкой станции к будущим выходам в открытый космос.

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Наддув завершён. Люк на станцию открыт.

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EV2

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EV1

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НАСА завершила  трансляцию ВКД-54 (США)

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Chris B - NSF‏ @NASASpaceflight 52 мин. назад

EVA-54 complete!
That's a trio of spacewalks over the last few weeks!

ARTICLE:

https://www.nasaspaceflight.com/2019/04/astronauts-begin-spacewalk-replace-stations-batteries/ ...

- by Pete Harding (@Space_Pete)

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https://tass.ru/kosmos/6309425

8 АПР, 21:41
Астронавты завершили выход в космос для модернизации систем МКС

Они установили адаптер на секции аккумуляторов, где одна из новых литий-ионных батарей вышла из строя, а также осуществили подключение устройства для подзарядки аккумуляторов

НЬЮ-ЙОРК, 8 апреля. /ТАСС/. Астронавты NASA Энн Макклейн и Канадского космического агентства Давид Сен-Жак завершили в понедельник выход в открытый космос, в ходе которого провели работы по модернизации энергосистемы и системы связи на МКС. Трансляция операций за бортом МКС шла на сайте NASA.

Для Сен-Жака это был первый выход в космос, а для Макклейн - второй. Термоизоляционное покрытие люка шлюза было закрыто в 13:47 по времени Восточного побережья США (20:47 мск), через шесть часов 15 минут после начала выхода в космос.

В NASA продолжительность выхода в открытый космос отсчитывается с момента включения электропитания в скафандрах и до момента, когда после возвращения астронавтов в шлюз туда начинает подаваться кислород. Самый продолжительный выход в открытый космос - восемь часов 52 минуты - совершили астронавты NASA Джим Восс и Сьюзен Хелмс в марте 2001 года.

Установка адаптера и прокладка кабелей

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Они установили адаптер на секции аккумуляторов, где одна из новых литий-ионных батарей вышла из строя, а также осуществили подключение устройства для подзарядки аккумуляторов. Кроме того, они проложили резервный кабель питания для 17-метрового дистанционного манипулятора Canadarm-2 и установили на корпусе американского модуля аппаратуру для расширения возможности беспроводной связи.

Сен-Жак также провел фотографирование участков корпуса европейского модуля Columbus, где будут установлены фиксаторы для крепления технической платформы.

В ходе работ по прокладке кабеля астронавты столкнулись с проблемой при демонтаже панели микрометеоритной защиты: одно из креплений долго не поддавалось, астронавтам пришлось импровизировать, использую комбинацию универсального инструмента и рычага. При повторной установке этой секции им пришлось демонтировать один из поручней, который используется при перемещении по внешней поверхности станции.

Несколько раз центр управления запрашивал у астронавтов информацию о состоянии перчаток скафандров и об уровне содержания влаги в шлемах. Как пояснила сотрудница центра управления, комментировавшая работы на поверхности МКС, такая проверка проводится регулярно, по завершении каждого этапа операций.

Нынешний выход стал уже третьим за последние три недели, предыдущие - с целью замены аккумуляторов - были осуществлены 22 и 29 марта.

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Модернизация энергосистемы

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Работы по модернизации энергосистемы МКС начались в январе 2017 года. По оценкам экспертов NASA, процесс замены 48 никель-водородных аккумуляторов на 24 литий-ионные батареи продлится до весны 2020 года и потребует еще не менее трех выходов в космос. Это связано с тем, что часть аккумуляторов расположена на корпусе станции таким образом, что к ним трудно подвести Canadarm-2, который используется для демонтажа отработавших блоков. Девять демонтированных никель-водородных батарей планируется в дальнейшем перенести с помощью дистанционного манипулятора на грузовой корабль, который после отстыковки сгорит в плотных слоях атмосферы, а три батареи останутся на внешней поверхности МКС.

В состав экипажа станции, помимо Энн Макклейн, Кристины Кох, Ника Хейга и Давида Сен-Жака, сейчас входят россияне Олег Кононенко и Алексей Овчинин.

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https://blogs.nasa.gov/stationreport/2019/03/26/iss-daily-summary-report-3262019/

ISS Daily Summary Report – 3/26/2019

Radiation Dosimetry Inside ISS-Neutrons (RADI-N2):

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The crew retrieved a donned sensor and handed over to the Russian crew for data retrieval. Another unit was also relocated to the crew quarters sleeping area. The objective of this Canadian Space Agency investigation is to better characterize the ISS neutron environment, define the risk posed to the crew members' health, and provide the data necessary to develop advanced protective measures for future spaceflight.  It has been recognized that neutrons make up a significant fraction (10-30%) of the biologically effective radiation exposure in low-Earth orbit. The bubble detectors used in the investigation are designed to detect neutrons and ignore all other radiation.

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Muscle Tone in Space (Myotones):

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A crewmember performed the first session of Myotones measurements. Myotones investigation observes the biochemical properties of muscles during long-term exposure to the spaceflight environment. Results fr om this investigation are expected to provide insight into principles of human resting muscle tone, which could lead to the development of new strategies for alternative treatments for rehabilitation both on Earth and for future space missions.

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Cerebral Autoregulation:

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Today a crewmember took measurements for the 1st session of the Cerebral Autoregulation experiment. As the body's most important organ, the brain needs a strong and reliable blood supply so the brain is capable of self-regulating blood flow even when the heart and blood vessels cannot maintain an ideal blood pressure. The Cerebral Autoregulation investigation tests whether this self-regulation improves in the microgravity environment of space.

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CIR (Combustion Integrated Rack):

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The crew swapped out the CIR Manifold 02/N2 bottles to support upcoming CIR Burning Rate Emulator runs. The CIR includes an optics bench, combustion chamber, fuel and oxidizer control, and five different cameras for performing combustion experiments in microgravity.

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Zero-Gravity Stowage Rack (ZSR) Swap:

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The crew relocated the ZSR in the Permanent Multipurpose Module (PMM) to wh ere the Resupply Stowage Rack (RSR) was located in the PMM. The ZSR will be disposed of on HTV-8. These activities are in preparation for rack reconfiguration plans for HTV-8.

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USOS Extravehicular Activity #53 Preparations:

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In preparation for Friday's planned EVA, the crew completed the following:

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• Procedures review
• Procedures conference
• Tool config
• EMU swap/water ops
• Cuff checklist print
• Dynamic Onboard Ubiquitous Graphics (DOUG) review
  

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Advanced Resistive Exercise Device (ARED) Quarterly Maintenance:

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The crew performed this scheduled maintenance to inspect the X-rotation dashpots, cycle the main arm through full range of motion and grease the Vibration Isolation and Stabilization (VIS) rails and rollers. The crew also greased upper stop catch plates and rack indicator catch mechanisms.

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https://blogs.nasa.gov/stationreport/2019/03/27/iss-daily-summary-report-3272019/

ISS Daily Summary Report – 3/27/2019

Cerebral Autoregulation:

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The crew performed data measurements for the Cerebral Autoregulation experiment and closed out the hardware. As the body's most important organ, the brain needs a strong and reliable blood supply, so the brain is capable of self-regulating blood flow even when the heart and blood vessels cannot maintain an ideal blood pressure. The Cerebral Autoregulation investigation tests whether this self-regulation improves in the microgravity environment of space.

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General Laboratory Active Cryogenic ISS Experiment Refrigerator (GLACIER):

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The crew installed the tray and left vertical support into the Glacier 1 unit. GLACIER provides a double middeck-locker-size freezer/refrigerator for a variety of experiments that require temperatures ranging from +4 °C (39 °F) and -160 °C (-301 °F). The GLACIER is compatible with the EXpedite the PRocessing of Experiments to Space Station (EXPRESS) rack.

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Extravehicular Activity (EVA) #53 Preparations:

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In preparation for this Friday's planned EVA #53, the crew performed the following:

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• Cooling Loop scrub on EMUs 3003 and 3006
• Leak check and Secondary Oxygen Pack (SOP) checkout on EMU 3006
• Tool config/audit
• Photo/TV ops
  

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Mobile Servicing System (MSS) Operations:

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Overnight and today, robotics operations continued to replace the 2A Nickel Hydrogen (NiH2) batteries with Lithium Ion (Li-Ion) units. Each Li-Ion will replace a pair of NiH2 batteries. The first Li-Ion battery was removed from the External Pallet (EP) Slot D and installed into the Integrated Equipment Assembly (IEA) Slot 1. Ground teams then extracted the NiH2 battery from IEA Slot 5 and installed the second Li-Ion Battery at that location. Finally, the third Li-Ion battery was removed from EP Slot F and installed in IEA Slot 3. Robotics operations will continue overnight to remove two additional NiH2 batteries. These activities are in preparation for EVA #53 to complete the 2A battery upgrade.

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Battery Charge Discharge Unit (BCDU) 4A3 Trip Troubleshooting:

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Following last Friday's EVA, Li-Ion Battery 4A3, with its associated Battery Charge Discharge Unit (BCDU), showed anomalous behavior during activation. A review of the 2A Battery discharge data found nothing anomalous to preclude continuing the 2A Battery replacements. On-orbit troubleshooting was performed to close the 4A3 BCDU Control Power (CP) Remote Bus Isolator (RBI) to provide backup power to the BCDU 2A3. Upon CP RBI closure, current flow coming out of 4A3 battery could be verified. Additionally, further ground laboratory testing duplicated the on-orbit signature. The team determined that there is no return path continuity to the 4A3 Battery, which indicates either the 4A3 Battery fuse is failed open and/or there is an electrical fault in the BCDU. The team is continuing to discuss the forward plan.

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Correction to yesterday's report: Zero-Gravity Stowage Rack (ZSR) Swap:

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The crew relocated a ZSR in the Permanent Multipurpose Module (PMM) in preparation for the disposal of a Resupply Stowage Rack (RSR) on H-II Transfer Vehicle (HTV) 8. This move is part of a series of activities that will reconfigure and optimize PMM stowage by the end of the HTV-8 mission.

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https://blogs.nasa.gov/stationreport/2019/03/28/iss-daily-summary-report-3282019/

ISS Daily Summary Report – 3/28/2019

Team Task Switching (TTS):

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Today the crew completed a TTS survey. The objective of the TTS investigation is to gain knowledge about whether or not crewmembers have difficulty in switching tasks, and apply the results to both the reduction of any negative consequences and improvement of individual and team motivation and effectiveness.

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Mobile Servicing System (MSS) Operations:

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Overnight, robotics specialists commanded the Space Station Remote Manipulator System (SSRMS) with the Special Purpose Dexterous Manipulator (SPDM) to complete battery R&R operations preceding tomorrow's US Extra Vehicle Activity (EVA) 53. After retrieving the NiH2 battery at the 2A Slot 6, and successfully installing it on the Exposed Pallet (EP), they retrieved the NiH2 battery at the 2A Slot 4. This battery will remain on SPDM Arm2 until after tomorrow's EVA.

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Extravehicular Activity (EVA) Preparations:

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In preparation for tomorrow's EVA #53, the crew performed the following activities:

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• Equipment Lock prep for suit donning
• Procedures review and conference
  

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Multiplexer/Demultiplexer (MDM) On-Orbit Tester (MOOT) Checkout:

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The crew checked out the spare Node 1 (N1) MDM to verify that the new, thermally tested EPIC cards installed last year are performing as expected. The crew stood down on the EXT-1 MDM checkout due to issues encountered when the software requested the MDM to dump data for review. The new EPIC cards were launched on OA-9 based on the results of the Test, Teardown and Evaluation (TT&E) study completed on the EXT-1 MDM that failed in 2017. Because MDMs route commands between vital station systems, knowing the status of these spares is critical to ensure ground specialists are properly postured to respond to any future MDM failures.

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https://blogs.nasa.gov/stationreport/2019/03/29/iss-daily-summary-report-3292019/

ISS Daily Summary Report – 3/29/2019

Extravehicular Activity (EVA) #53:

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Today, Nick Hague, as EVA Crewmember (EV)-1, and Christina Koch, as EV-2, performed US EVA #53 (Lithium Ion Battery R&R EVA #2) with a Phased Elapsed Time (PET) of 6 hours 45 minutes. The second of two planned battery replacement EVAs, today's EVA completed the installation of the new batteries brought to ISS during the H-II Transfer Vehicle (HTV)-7 mission. In summary, the crew completed the following tasks:

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• Install AGB on ESP-2 FHRC
• Retrieve Adapter Plate E and F from EP
• Install Adapter Plate F in Slot 6
• Install Adapter Plate E in Slot 4
• Relocate Battery 2 to Adapter Plate E
• Retrieve Adapter Plate D from EP and Install in Slot 2
• 4A3 BCDU and Battery Reconfiguration
• P6 Battery Preparation
  

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https://blogs.nasa.gov/stationreport/2019/04/02/iss-daily-summary-report-4022019/

ISS Daily Summary Report – 4/02/2019

Behavioral Core Measures (BCM):

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Over the weekend, the crew completed BCM cognition test sessions. Behavioral Core Measures for Detecting Behavioral Health Risks during Exploration Missions examines an integrated, standardized suite of measurements for its ability to rapidly and reliably assess the risk of adverse cognitive or behavioral conditions and psychiatric disorders during long-duration spaceflight.

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Meteor:

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Over the weekend, the crew deinstalled the Meteor camera hardware from the Window Observational Research Facility (WORF) in preparation for return. The Meteor payload is a visible spectroscopy instrument used to observe meteors in Earth orbit. Meteor uses image analysis to provide information on the physical and chemical properties of the meteoroid dust, such as size, density, and chemical composition. The study of the meteoroid dust on orbit provides information about the parent comets and asteroids.

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Moon Imagery (Optical Nav):

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Over the weekend, the crew performed two Optical navigation (Moon Imagery) sessions. If a spacecraft loses communication with the ground or with NASA's Deep Space Network, its crew must navigate just as ancient mariners did, using the moon and stars. The Moon Imagery investigation collects pictures of the moon from the ISS, which are used to calibrate navigation software to guide the Orion Multi-Purpose Crew Vehicle in case its transponder-based navigation capability is lost. Crewmembers photograph the moon's phases during one 29-day cycle, providing images of varying brightness to calibrate Orion's camera software.

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At Home in Space (AHIS):

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The crew completed the At home in Space questionnaire. This Canadian Space Agency investigation assesses culture, values, and psychosocial adaptation of astronauts to a space environment shared by multinational crews on long-duration missions. It is hypothesized that astronauts develop a shared space culture that is an adaptive strategy for handling cultural differences and they deal with the isolated confined environment of the spacecraft by creating a home in space. At Home in Space also uses questionnaires to investigate individual and culturally related differences, family functioning, values, coping with stress, and post-experience growth.

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Materials Science Laboratory (MSL):

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The crew performed the Vacuum Sensor Combination R&R and performed a water loop check after the Core Facility extraction. The MSL is used for basic materials research in the microgravity environment of the ISS. The MSL can accommodate and support diverse Experiment Modules. In this way many material types, such as metals, alloys, polymers, semiconductors, ceramics, crystals, and glasses, can be studied to discover new applications for existing materials and new or improved materials.

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Glovebox Freezer:

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The crew installed the Glovebox Freezer hardware setup in the Life Science Glovebox facility. The Glovebox Freezer integrates into the Life Science Glovebox (LSG) and Microgravity Science Glovebox (MSG) to provide rapid freeze capability in support of biological sciences.

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The ISS Experience:

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Crewmembers recorded an ISS crew conference. The ISS Experience creates a virtual reality film documenting daily life aboard the ISS. The 8 to 10 minute videos created from footage taken during the six-month investigation cover different aspects of crew life, execution of science aboard the station, and the international partnerships involved. The ISS Experience uses a Z-CAM V1 Pro Cinematic Virtual Reality (VR) 360-degree camera with nine 190° fisheye lenses.

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Mobile Servicing System (MSS) Operations:

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After the successful completion of US Extravehicular Activity (EVA)#53 on Friday, Robotics Ground Controllers powered up the MSS and maneuvered the Space Station Remote Manipulator System (SSRMS) with the Special Purpose Dexterous Manipulator (SPDM) to complete the 4A channel battery R&R. The remaining two NiH2 batteries, which were being held by SPDM Arms, were installed on the H-II Transfer Vehicle 7 (HTV7) Exposed Pallet (EP) which is stowed on the Mobile Base System (MBS) Payload/Orbit Replaceable Unit (ORU) Accommodation (POA). To complete the day's robotic activities, both SPDM and SSRMS were maneuvered to the park position.

Today, the SPDM grasped the spare Battery Charge Discharge Unit (BCDU) on External Logistic Carrier (ELC) 1 with SPDM Arm2. The spare BCDU was unfastened and removed from the Flight Releasable Attachment Mechanism (FRAM) and the MSS was moved over the P4 Integrated Electronic Assembly (IEA). SPDM Arm1 has grasped the failed BCDU at the P4 4A3 location and controllers will continue the R&R later tonight.

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Post Extravehicular Activity (EVA) Activities:

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The US crew completed several cleanup activities on Saturday including post-EVA health assessments and an EVA debrief session with ground specialists.

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US EVA #54 Preparations:

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In preparation for the Truss Jumper EVA currently scheduled on 8 April, on Saturday the crew completed an EVA procedures conference and prepared the Simplified Aid for EVA Rescue (SAFER) Virtual Reality Trainer (VRT) for use. The VRT allows crewmembers to practice using SAFER in various rescue scenarios. Today the crew configured various EVA tools, completed METOX canister operations, and resized an Extravehicular Mobility Unit (EMU). Each EMU contains exchangeable components allowing each astronaut to adjust the EMU fit to their individual body sizing and fit preferences.

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Battery Charge Discharge Unit (BCDU) Remove and Replace (R&R):

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During the checkout of the three new batteries installed during US EVA #52, ground controllers saw anomalous behavior during activation of Li-Ion Battery 4A3 and its associated BCDU. After reviewing all available telemetry, and testing in the ISS Power Lab (IPL), specialists have declared this BDCU failed; in an attempt to recover the 4A3 battery, robotics specialists are currently using the SSRMS and SPDM to replace this BCDU with an on-orbit spare. Checkout of the newly installed BCDU is scheduled to occur tonight.

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Public Affairs Office (PAO) Event:

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On Monday, Nick Hague, Christina Koch, and Anne McClain conducted a series of PAO events with the Today Show, CBS News, and Good Morning America. The crew answered multiple questions, discussing the research being conducted on the ISS, the recent EVAs, and the importance of continued space exploration.

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https://blogs.nasa.gov/stationreport/2019/04/03/iss-daily-summary-report-4032019/

ISS Daily Summary Report – 4/03/2019

Materials Science Laboratory (MSL):

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The crew opened the gas and vacuum lines as part of the MSL water loop checkout. The MSL is used for basic materials research in the microgravity environment of the ISS. The MSL can accommodate and support diverse experiment modules. Many material types, such as metals, alloys, polymers, semiconductors, ceramics, crystals, and glasses, can be studied to discover new applications for existing materials and new or improved materials.

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CIR (Combustion Integrated Rack):

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The crew replaced a burned out Advanced Combustion via Microgravity Experiment (ACME) igniter for the Spherical Burner. The CIR includes an optics bench, combustion chamber, fuel and oxidizer control, and five different cameras for performing combustion experiments in microgravity.

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Mobile Servicing System (MSS) Operations/Battery Charge Discharge Unit (BCDU) Checkout:

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Overnight, Ground Controllers completed the BCDU R&R by removing the failed BCDU from the P4 Integrated Electronic Assembly (IEA) and replacing it with the spare BCDU. After completing a successful checkout of the new BCDU, the MSS stowed the failed BCDU back on the External Logistic Carrier (ELC)-1. Since the 4A3 Li-Ion battery was confirmed failed during the BCDU checkout, Ground Controllers removed the failed battery from the P4 IEA this morning and installed it on the H-II Transfer Vehicle (HTV) 7 External Pallet (EP). The extraction of the NiH2 battery at the P4 IEA slot 6 and relocation to slot 5 will occur this Friday with the remainder of battery relocation operations following Monday's Truss Jumper EVA.

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Extravehicular Activity (EVA) #54 Preparations:

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In preparation for Monday's planned Truss Jumper EVA, the crew completed the following activities today:

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• Procedures review/conference with ground specialists.
• Rechargeable EVA Battery Assembly (REBA) install and powered checkout. REBAs are used to power the glove heaters on the Extravehicular Mobility Units (EMUs) and a successful checkout is required before the crew can go EVA.
  

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Space Integrated Global Inertial Navigation System (SIGI) 2 Remove and Replace (R&R):

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The primary function of SIGI is to produce the GPS based position, velocity, and attitude outputs needed to control the ISS's position in space.  Additional sensors inside of the SIGI-2 Orbital Replacement Unit (ORU), previously unused, have failed however, prompting today's R&R to recover these sensors and allow the testing of a proposed Guidance, Navigation, and Control (GNC) software feature. While performing a checkout of the new hardware, ground experts saw Built in Test (BIT) faults and aborted activation. Teams continue to investigate the cause of the anomalous signature.

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Crew Health Care System (CHeCS) Contingency On-Board Training (OBT):

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The 58S crew performed this OBT to review procedures, hardware and communication methods necessary to manage a medical emergency onboard the ISS. Emergency medical equipment was deployed and the crew practiced Cardiopulmonary Resuscitation (CPR) positioning to ensure familiarity with procedure execution.

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Treadmill 2 (T2) Quarterly Maintenance:

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The crew completed this regularly scheduled maintenance to inspect isolators, bottom corner hardware witness marks and bottom snubbers for signs of free play. No issues were identified during the activity.

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https://blogs.nasa.gov/stationreport/2019/04/04/iss-daily-summary-report-4042019/

ISS Daily Summary Report – 4/04/2019

72 Progress (72P) Launch/Dock:

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72P launched today from the Baikonur Cosmodrome at 6:01 AM CT. Following a 2-orbit rendezvous, the vehicle successfully docked to the ISS at 9:27 AM CT. This vehicle brought two key components: a power cable and the Bartolomeo Trunnion Slip of Prevention devices, to ISS in support of Monday's planned Extravehicular Activity (EVA).

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The ISS Experience:

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The crew replaced the solid state drives that stores the saved recording files. The ISS Experience creates a virtual reality film documenting daily life aboard the ISS. The 8 to 10 minute videos created from footage taken during the six-month investigation cover different aspects of crew life, execution of science aboard the ISS, and the international partnerships involved. The ISS Experience uses a Z-CAM V1 Pro Cinematic Virtual Reality (VR) 360-degree camera with nine 190° fisheye lenses.

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Japan Aerospace Exploration Agency Protein Crystallization Growth (JAXA-PCG):

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The crew ins erted the JAXA PCG 16 sample into the FROST 2 refrigerator unit. The objective of the JAXA PCG investigation is to grow high quality protein crystals in microgravity.

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Extravehicular Activity (EVA) #54 Preparations:

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In preparation for Monday's planned Truss Jumper EVA, the crew completed the following activities today:

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• Equipment Lock preparations.
• EMU Cuff Checklist Printing
• Extravehicular Mobility Unit (EMU) 3006 On-Orbit Fit Check Verification (OFV).
• EVA camera setup
  

During the OFV, the crew donned their EMUs to ensure a proper fit before the upcoming EVA. Since each EMU contains exchangeable components, allowing each astronaut to adjust EMU fit to their individual preference, it is important to ensure the EMU fits as expected before they crew egress ISS.

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Russian Audio Interface Unit (RAIU) 3 Removal:

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The crew removed RAIU-3 from the Node 3 Overhead 5 (NOD3O5) Rack to access the associated Address Connector. In order to support redundant communications between the Russian Segment and future US Crewed Vehicles, this Address Connector will be needed to complete installation of a communications cable later this year. Since RAIU-3 is not currently in use, it will be stowed as a spare.

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Space Integrated Global Inertial Navigation System (SIGI) 2 Remove and Replace (R&R):

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The crew R&Rd SIGI-2 yesterday to recover additional, unused sensors in the Orbital Replacement Unit (ORU) for data gathering purposes. The new SIGI-2 failed its Built-in-Tests (BIT) during checkout, however, and experts have declared it failed. The crew was directed to re-install the old SIGI-2 earlier this morning and, after a successful activation and checkout, the unit is now providing good data to ISS systems.

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Eye Exams:

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The US crew completed routine Optical Coherence Tomography (OCT) eye exams. OCT is an imaging technique analogous to ultrasound imaging that uses light instead of sound to capture micrometer-resolution, two- and three-dimensional images of tissue; In this case, the objects of interest are the crewmember's eyes. Eye exams are performed regularly onboard in order to monitor crewmembers eye health. Eyesight is one of the many aspects of the human body that is affected by long-duration stays in a microgravity environment.

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https://blogs.nasa.gov/stationreport/2019/04/05/iss-daily-summary-report-4052019/

ISS Daily Summary Report – 4/05/2019

MELFI (Minus Eighty-Degree Laboratory Freezer for ISS):

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A crewmember completed the last part of the MELFI 2 Dewar 3 cleanup. The Minus Eighty-Degree Laboratory Freezer for ISS (MELFI) is a cold storage unit that maintains experiment samples at ultra-cold temperatures throughout a mission.

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The ISS Experience:

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Crewmembers performed an ISS Experience crew log recording and a recording with a crewmember using the Treadmill. The ISS Experience creates a virtual reality film documenting daily life aboard the ISS. The 8 to 10 minute videos created from footage taken during the six-month investigation cover different aspects of crew life, execution of science aboard the station, and the international partnerships involved. The ISS Experience uses a Z-CAM V1 Pro Cinematic Virtual Reality (VR) 360-degree camera with nine 190° fisheye lenses.

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Light Microscopy Module (LMM) Cleanup:

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The last session of the Biophysics experiment performed on February 16 resulted in two broken glass capillaries on one of the plates as well as on the LMM lens. Today a crewmember cleaned the glass off the surfaces with wet wipes while another crew member vacuumed any loose particles.

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Extravehicular Activity (EVA) #54 Preparations:

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In preparation for Monday's scheduled USOS EVA #54, Truss Jumper EVA, the crew completed the following activities today:

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• Continue with final tool configuration.
• Printing of final EVA procedures.
• Transfer of EVA hardware, both Trunnion Slip Off Prevention (TSOP) devices and the S3 power cable, from 72 Progress.
  

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Mobile Servicing System (MSS) Operations:

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Later tonight, robotics ground controllers will continue channel 4A3 recovery operations using the Space Station Remote Manipulator System (SSRMS) and Special Purpose Dexterous Manipulator (SPDM) to relocate a NiH2 battery from 4A Integrated Electronics Assembly (IEA) slot 6 (4A3-2) to slot 5 (4A3-1). Following the relocation, SPDM will be stowed and SSRMS will execute a double walk-off in preparation for Monday's US EVA #54 Truss Jumper EVA.

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Nitrogen / Oxygen Recharge System (NORS) Tank Uninstall:

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The crew worked with MCC-H to terminate the transfer of Oxygen from the NORS Recharge Tank to the High Pressure Gas Tanks (HPGTs) located around the Airlock module. They removed the fill hose and regulator, then uninstalled and stowed the tank for return on a future cargo vehicle.

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Solid State Lighting Assembly (SSLA) Installation:

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The crew upgraded the light at the Japanese Experiment Logistics Module-Pressurized Section (JLP) 1FP1 location with a new SSLA. Designed to replace General Luminaire Assemblies (GLAs), the new SSLAs improve visual acuity and to provide a crew health countermeasure for circadian rhythms, sleep, alertness and performance. To accomplish these goals, SSLAs are designed to operate in three modes providing three distinct spectrums of light; the different spectrums provide control of the blue portion of the light, which affects melatonin production in humans, that can impact sleep.

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Japanese Experiment Module (JEM) Inter Module Ventilation (IMV) Cleaning:

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The crew cleaned the JEM IMV starboard forward fan and associated IMV grille as part of scheduled preventative maintenance. The IMV flow rates must be great enough to ensure that the IMV fan is operating outside of the stall region which reduces airflow and increases fan acoustic noise, and excessive dust buildup can cause this phenomenon. The effectivity of today's cleaning will be checked during the next se t of IMV flow measurements.

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Public Affairs Office (PAO) Live Event:

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David Saint-Jacques participated in a live PAO event with high school students participating in the FIRST Robotics Festival. Located in Quebec City, Canada, this festival hosts the regional finals of the FIRST competition and is Canada's largest high school robotics competition. Students used this opportunity to connect with the ISS and ask David Saint-Jacques questions about living and working and space and the future of space exploration.

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https://spaceflightnow.com/2019/04/08/astronauts-venture-outside-for-more-space-station-battery-work-cable-installations/

Astronauts venture outside for more battery work, cable installations
April 8, 2019 | William Harwood

STORY WRITTEN FOR CBS NEWS & USED WITH PERMISSION
Updated 2:39pm EDT (1839 GMT)


Canadian astronaut David Saint-Jacques at work outside the International Space Station. Image: NASA TV.

Two astronauts floated outside the International Space Station Monday for NASA's third spacewalk in less than three weeks, this one to help replace a faulty solar array battery that was installed during the first excursion, to route ethernet cabling to extend wireless connectivity and to install backup power lines for the lab's robot arm.

Floating in the Quest airlock, NASA flight engineer Anne McClain, call sign EV-1, and Canadian astronaut David Saint-Jacques, EV-2, switched their spacesuits to battery power at 7:31 a.m. EDT, officially kicking off what turned out to be a six-hour 29-minute excursion, the 216th since station assembly began in 1998.

The spacewalkers accomplished all of their primary objectives without any major problems. McClain had a bit of trouble clearly hearing mission control toward the end of the excursion and reported moisture on her helmet visor after returning to the airlock. But she said there were no signs of an actual water leak that might pose a safety threat.

Saint-Jacques originally planned to conduct Monday's spacewalk with NASA astronaut Nick Hague. Hague and McClain carried out the first of the three spacewalks March 22 while McClain and Christina Koch planned to carry out the second on March 29, becoming the first all-female spacewalk team in space history.

But after the first excursion, McClain decided she was more comfortable wearing a medium-size suit, the same one Koch needed. Because it would take nearly a full crew day to re-size a spare suit to fit McClain, Hague took her place on the second spacewalk and McClain replaced him for the third outing.

As it turned out, the crew swaps were just one of the changes the crew had to deal with.


NASA's Anne McClain and Canadian astronaut David Saint-Jacques exit the space station airlock to begin their spacewalk. Image: NASA TV.

During the March 22 spacewalk, McClain and Hague followed up work with the station's robot arm to replace six older nickel-hydrogen batteries in the lab's solar power system with three more efficient lithium-ion batteries. The astronauts installed "adapter plates" permitting a single li-ion battery to take the place of two of the older nickel-hydrogen power packs.

During the second spacewalk March 29, Hague and Koch helped with the installation of another three li-ion batteries. But during testing after the first EVA, engineers ran into problems with one of the initially installed li-ion batteries and an electronics component called a battery charge-discharge unit, or BCDU.

After attempts to correct the problems failed, NASA managers opted to remove the faulty battery and replace it with two of the recently removed nickel-hydrogen batteries. They also decided to replace the BCDU with a spare.

Using the station's robot arm, flight controllers removed the suspect battery and the BCDU and then re-installed one of the recently removed nickel-hydrogen batteries. They also robotically replaced the failed BCDU.

With that work out of the way, McClain and Saint-Jacques removed an adapter plate that was installed during the first spacewalk to make room for the installation of a second nickel-hydrogen battery.

After the spacewalk, flight controllers will use the robot arm to re-install the second nickel-hydrogen battery, restoring power channel 4A to its normal output.

Kenny Todd, space station operations and integration manager, said the faulty lithium-ion battery will be discarded while the BCDU will be returned to Earth for inspections to find out what went wrong. A new lithium-ion battery will be flown up to the station on a future cargo flight and eventually installed in place of the two older batteries.

As for using a mix of old and new batteries in power channel 4A, "we anticipate we can run that configuration for quite some time and get us back to our nominal power capability on channel 4A," he said. "So we feel really good about where we're going to end up on the back side of these EVAs and robotics activities."

With the adapter plate move out of the way, McClain and Saint-Jacques pressed ahead with work to connect ethernet cabling at the forward end of the station's Destiny laboratory module that will extend wireless connectivity for science instruments mounted outside the station.

A cable run out to the right side of the station's solar power truss was deferred to make time for the adapter plate relocation.

The final major task on the crew's agenda Monday was to run power lines from the central Unity module to the central S0 segment of the power truss to provide a backup power source for the lab's robot arm.

While the arm already has redundant power sources, the cables installed by McClain and Saint-Jacques will allow the arm to continue operating even if one of those other power supplies fails.

Saint-Jacques also worked at the forward end of the station where4 the European Space Agency's Columbus laboratory module is attached to install fittings needed for the eventual addition of a commercial payloads platform that will be used to hold a variety of remotely operated science instruments.

He successfully installed a secondary attachment fitting, but was unable to mount the primary unit because of unexpected interference issues. He took documentary photographs to help engineers better understand the issue before an additional attempt is made on a future spacewalk.

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David Saint-Jacques' first spacewalk on the International Space Station

Canadian Space Agency

Опубликовано: 8 апр. 2019 г.

Canadian Space Agency astronaut David Saint-Jacques took part in his first spacewalk on the International Space Station on April 8, 2019. He and NASA astronaut Anne McClain performed a series of maintenance tasks on the exterior of the orbiting laboratory. (Credits: NASA, Canadian Space Agency)

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David Saint-Jacques‏Подлинная учетная запись @Astro_DavidS 8 ч. назад

What a view. Words are missing.
//
Quelle vue. Les mots me manquent.
#DareToExplore #OsezExplorer

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LIVE - David Saint-Jacques' first spacewalk on the International Space Station

Canadian Space Agency

Трансляция началась 22 часа назад

(8:24:27)