ISS - Międzynarodowa Stacja Kosmiczna (2017)

[mss]

Station Managers Work Plan as Controllers Troubleshoot Data Relay Box

International Space Station managers will meet Sunday morning to discuss a forward plan for dealing with the apparent failure of one of two fully redundant multiplexer-demultiplexer (MDM) data relay boxes on the S0 truss of the complex.

External MDM-1 apparently failed at 1:13 p.m. Central time Saturday. Multiple attempts by flight controllers to restore power to the relay box have not been successful. Troubleshooting efforts are continuing. The Expedition 51 crew was informed of the apparent failure and is not in any danger. The MDMs on the truss control the functionality of the station’s solar arrays and radiators among other equipment, and provide power to a variety of other station components.

Because the two MDMs have full redundancy, the apparent loss of MDM-1 has had no impact on station operations.

Spacewalk Planned to Change Out Failed Relay Box

International Space Station Program managers met Sunday and gave approval for a contingency spacewalk no earlier than Tuesday by two Expedition 51 crewmembers to change out a multiplexer-demultiplexer (MDM) data relay box on the S0 truss that failed on Saturday morning. The cause of the MDM failure is not known. A final decision on a firm date for the spacewalk and who will conduct the spacewalk will be made later in the day Sunday.

The data relay box is one of two fully redundant systems housed in the truss that control the functionality of radiators, solar arrays, cooling loops and other station hardware. The other MDM in the truss is functioning perfectly, providing uninterrupted telemetry routing to the station’s systems. The crew has never been in any danger and the MDM failure, believed to be internal to the box itself, has had no impact on station activities.

On Sunday, shortly before managers met to discuss the forward plan for dealing with the failed MDM, station commander Peggy Whitson of NASA prepared a spare data relay box and tested components installed in the replacement. She reported that the spare MDM was ready to be brought outside to replace the failed unit. Back on March 30, Whitson and Expedition 50 commander Shane Kimbrough of NASA conducted a spacewalk to install the MDM with upgraded software that failed Saturday.

A similar MDM replacement spacewalk was conducted in April 2014 by Expedition 39 crewmembers Steve Swanson and Rick Mastracchio.

The spacewalk will last about two hours in duration to replace the failed box. No other tasks are planned for the excursion. It will be the sixth spacewalk conducted from the Quest airlock this year.

[kanarkusmaximus]

Ciekawe! Zobaczymy jaka będzie decyzja NASA!

[mss]

Jest decyzja: EVA 43 we wtorek 23.05.2017 o godzinie 14 CEST astronautów Whitson i Fischer. Spacer ma trwać około 2 godzin.

[mss]

Station Managers Give Go for Tuesday Spacewalk

International Space Station Program managers have given the green light for a contingency spacewalk on Tuesday by two Expedition 51 crewmembers to change out a multiplexer-demultiplexer (MDM) data relay box on the S0 truss that failed on Saturday morning. The cause of the MDM failure is not known. After a review of spacewalk preparations and crew readiness throughout the day Sunday, the decision was made to press ahead with the spacewalk on Tuesday. It will be conducted by Expedition 51 Commander Peggy Whitson and Flight Engineer Jack Fischer of NASA.

The data relay box is one of two fully redundant systems housed in the truss that control the functionality of radiators, solar arrays, cooling loops and other station hardware. The other MDM in the truss is functioning perfectly, providing uninterrupted telemetry routing to the station’s systems. The crew has never been in any danger, and the MDM failure, believed to be internal to the box itself, has had no impact on station activities.

On Sunday morning, Whitson prepared a spare data relay box and tested components installed in the replacement. She reported that the spare MDM was ready to be brought outside to replace the failed unit. Back on March 30, Whitson and Expedition 50 commander Shane Kimbrough of NASA conducted a spacewalk to install the same MDM with upgraded software tat failed Saturday.

A similar MDM replacement spacewalk was conducted in April 2014 by Expedition 39 crewmembers Steve Swanson and Rick Mastracchio of NASA.

Tuesday’s spacewalk will last about two hours in duration to replace the failed box. An additional task was added for Fischer to install a pair of wireless communications antennas on the Destiny Lab while Whitson replaces the failed data relay box. The antenna installation task was originally planned for the last spacewalk on May 12.

The contingency spacewalk will be the 201^st in support of space station assembly and maintenance and the sixth conducted from the Quest airlock this year.

This will be the 10^th spacewalk in Whitson’s career and the second for Fischer. Whitson will be designated as extravehicular crewmember 1 (EV 1) and will wear the suit with the red stripes. Fischer will be extravehicular crewmember 2 (EV 2) and will wear the suit with no stripes.

Tuesday’s spacewalk is expected to begin around 8 a.m. EDT, or earlier, if the crew is running ahead of schedule with its spacewalking preparations. NASA Television coverage will begin at 6:30 a.m.

[kanarkusmaximus]

Mamy co w takim razie jutro oglądać!

[Orionid]

Awaryjny spacer kosmiczny na ISS
BY MICHAŁ MOROZ ON 21 MAJA 2017

(...)Aktualizacja, 22 maja, godzina 11:55 CEST – spacer kosmiczny zostanie przeprowadzony 23 maja. Początek zaplanowano na godzinę 14:00 CEST.

Kontrolerzy lotu NASA zebrali się w niedziele 21 maja aby zatwierdzić pilny awaryjny spacer kosmiczny, który zostanie przeprowadzony przez dwoje członków Ekspedycji 51 na ISS. Uszkodzeni uległ jeden z dwóch systemów przekaźnika danych (multiplekser-demultiplekser, MDM), który znajduje się na elemencie S0 kratownicy stacji. Przyczyna awarii nie jest znana. Element ten kontroluje przepływ danych dotyczących radiatorów, paneli słonecznych, systemów chłodzenia oraz innych systemów stacji. (...)

Ten artykuł będziemy aktualizowali wraz z rozwojem sytuacji.

http://kosmonauta.net/2017/05/awaryjny-spacer-kosmiczny-na-iss/

Awaryjny spacer kosmiczny na ISS zakończony
BY MICHAŁ MOROZ ON 24 MAJA 2017

http://kosmonauta.net/2017/05/awaryjny-spacer-kosmiczny-na-iss-zakonczony/

[kanarkusmaximus]

A tymczasem trwa spacer kosmiczny na ISS. Niebawem chyba koniec.

[mss]

201 Spacer kosmiczny dla ISS/spacer EVA-43 w skafandrach EMU zakończył się pełnym sukcesem i trwał 2 godziny i 46 minut.

[deathrider]

Jest transmisja na kanale NASA.

[mss]

Dzisiejszy spacer podsumowuje czas wszystkich 201 spacerów związanych z obsługą MSK/ISS łącznie wg NASA: 1250 godzin i 41 minut (czyli 52 dni 2 godziny i 41 minut). Peggy Whitson zajmuje aktualnie 3 miejsce na liście astronautów wg łącznego czasu spacerów kosmicznych (60h 21min podczas 10 spacerów) po rosyjskim kosmonaucie Anatoliju Sołowjowie (78h 46min podczas 16 spacerów) i amerykańskim astronaucie Mike'u Lopezie-Alegria (67 h 40min podczas 10 spacerów).

[Slavin]

Awaryjny spacer EVA-43. Pełne nagranie: 



I w wersji z podkładem muzycznym (z filmu Mission Impossible z 1996 roku  )

[mss]

Aktualne zestawienie spacerów z MSK/ISS i 5-ki astronautów z najdłuższymi czasami spacerów kosmicznych:

[kanarkusmaximus]

To był chyba jeden z najkrótszych spacerów na ISS i pewnie najkrótszy, w którym nie doszło do przerwania prac (np wskutek problemów technicznych). Mss - zgadza się?

[mss]

Krótszy był spacerek z 2014:

23.04.2014 o 13:56 rozpoczęła się EVA-26. Wzięli w niej udział astronauci Swanson i Mastracchio, którzy wyszli w skafandrach EMU ze śluzy Quest. Astronauci wymienili komputer EXT-2 MDM. EVA zakończyła się o 15:32 i trwała 1 godzinę i 36 minut.

 

[mss]

CubeSats Deployed Before Upcoming Crew and Cargo Missions

More CubeSats were ejected from the International Space Station this week to explore the Earth’s upper atmosphere. Meanwhile, the Expedition 51 crew trained for a crew departure and cargo craft arrival.

NanoRacks, a private company with facilities on the space station, deployed a total of 17 CubeSats over two days this week from a satellite deployer outside the Japanese Kibo lab module. The tiny satellites will orbit Earth for up to two years observing Earth’s thermosphere and studying space weather.

Two Expedition 51 crew members are returning to Earth June 2 completing a 196 day mission in space. Soyuz Commander Oleg Novitskiy and Flight Engineer Thomas Pesquet practiced their descent today in their Soyuz MS-03 spacecraft. The duo are expected to land in Kazakhstan next Friday at 10:10 a.m. EDT.

The Dragon resupply ship, from SpaceX and loaded with brand new science experiments, will launch June 1 and arrive at the station June 4. NASA astronaut Jack Fischer will be at the robotics controls commanding the Canadarm2 to reach out and grapple Dragon. He and station Commander Peggy Whitson familiarized themselves today with the Dragon capture procedures and lighting conditions inside the cupola.